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Differentiated strategies for synergistic mitigation of ammonia and methane emissions from agricultural cropping systems in China Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-10-04 Baojie Li, Wanglijin Gu, Yongqi Zhao, Zhifei Zhang, Xiaorui Wang, Yunkai Yang, Zhihui Shen, Hong Liao, Qing Zhu
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Editorial special issue: Celebrating 25 years of AmeriFlux Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-30 Trevor F. Keenan, Gil Bohrer, Russell L. Scott, Rodrigo Vargas
No Abstract
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Patterns and controls of leaf litter nitrogen and phosphorus of broad-leaved tree species across and within the tropics and the extra-tropics Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-30 Boyu Ma, Yang Wang, Jielin Ge, Zongqiang Xie
Leaf litter nitrogen (N) and phosphorus (P), as the final products reflecting the foliar nutrient status after resorption, strongly influence forest production and nutrient cycling. However, our nuanced understanding of their general patterns and controls is still lacking, and whether differential regulatory mechanisms exist between climatic zones remains largely incomplete, which introduces substantial
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Combining tree-ring growth and carbon isotope data enhances the understanding of climate sensitivity and physiological responses for Chinese fir in a common garden Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-10-02 Hong Wang, Aiguo Duan, Xiaoying Liu, Anming Zhu, Jianguo Zhang
Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is one of China's most important tree species, and possible adverse factors affecting its growth and physiology is of particular concern for climate change adaptation. In this context, growth performance (BAI: basal area increment and MAXD: maximum density), climate sensitivity, and the relative contributions of climatic and physiological determinants
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Differentiated growth of the most widely planted conifer in response to extreme droughts across semi-arid regions in Northern China Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-10-03 Jitang Li, Yuyang Xie, Tuya Wulan, Jie Gong, Hongyan Liu, Jesús Julio Camarero, Liang Shi, Lingling Yan, Caixian Xu, Tiantian Jin, Zehao Shen
Global warming is leading to more frequent and intense drought events, exerting unprecedented pressure on forest growth. Although post-drought recovery in plantation growth has been studied enormously, the variation of planted populations across the whole distribution range of a species is not well understood. In this study, the growth suitability of the most widely planted conifer species in dry lands
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Novel metrics for assessing vegetation phenology from hydrological processes: Comparison with photosynthetic phenology Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-29 Fan Liu, Xingchang Wang, Yucui Zhang, Yanjun Shen
Vegetation phenology regulates ecosystem carbon, water, and energy fluxes, as well as biosphere-atmosphere feedbacks. Currently, vegetation indices and carbon fluxes have been incorporated in models for predicting vegetation phenology, hydrological processes have not yet been used despite significant interactions between climate, phenology, and hydrology. The evaporative fraction (EF) and Bowen ratio
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In pursuit of change: Divergent temporal shifts in climate sensitivity of Norway spruce along an elevational and continentality gradient in the Carpathians Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-28 Andrei Popa, Jernej Jevšenak, Ionel Popa, Ovidiu Badea, Allan Buras
Across much of Europe, climate change has caused a major dieback of Norway spruce (Picea abies L.), an economically important tree species. However, the southeasternmost fringe of this tree species – the Eastern Carpathians – has not yet suffered large-scale dieback. Studying temporal shifts of climate sensitivity (TSCS) over time may elucidate the degree to which Norway spruce may be vulnerable to
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The dynamic trajectory of carbon dioxide removal from terrestrial ecosystem restoration: A critical review Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-26 Shuli Niu, Ruiyang Zhang, Song Wang, Yanan Wu, Weinan Chen, Dashuan Tian, Yuanyuan Huang, Jianyang Xia, Yunting Fang, Yangjian Zhang, Lingli Liu, Junhua Yan, Guirui Yu
Anthropogenic climate change poses a significant threat to global ecosystems, necessitating nature-based solutions to achieve net-zero emissions and mitigate climate change. Restoration of degraded ecosystems is critical for terrestrial carbon dioxide removal (TCDR), in addition to preserving biodiversity and reducing emissions of carbon and other greenhouse gases. However, the quantitative estimation
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In-season maize yield prediction in Northeast China: The phase-dependent benefits of assimilating climate forecast and satellite observations Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-24 Chenxi Lu, Guoyong Leng, Xiaoyong Liao, Haiyang Tu, Jiali Qiu, Ji Li, Shengzhi Huang, Jian Peng
Various yield forecasting methods have been reported in literature, but the benefits of assimilating seasonal climate forecasts and satellite observations for in-season yield forecasting during different growth stages have rarely been examined using machine learning. By synthesizing census yields, seasonal climate forecasts (SCF) and satellite-based gross primary production (GPP), this study develops
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Identifying thresholds of time-lag and accumulative effects of extreme precipitation on major vegetation types at global scale Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-24 Min Liu, Hao Wang, Huiliang Zhai, Xiaochong Zhang, Muhammad Shakir, Jianying Ma, Wei Sun
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Altitudinal adjustment of leaf spectral reflectance in broad-leaved species on the Qinghai-Tibetan Plateau Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-24 Xinran Ke, Huixing Kang, Tong Guo, Yan Zhang, Tianyu Zheng, Yixin Ma, Xiruo Wang, Yanhong Tang
Leaf spectral reflectance is a crucial indicator of leaf physiology both in eco-physiology and remote sensing. To assess how alpine plants acclimate or adapt to altitudinal environments, we examined leaf optical properties at wavelengths from 280 to 1100 nm in 797 leaves of 38 broad-leaved herbaceous species along an altitudinal gradient from 3200 m to 4400 m on the northeastern Qinghai-Tibetan Plateau
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Nocturnal peak methane flux diel patterns in rice paddy fields Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-22 Hong Li, Changhui Peng, Manuel Helbig, Min Zhao, Haiqiang Guo, Bin Zhao
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Early leaf senescence under drought conditions in the Northern hemisphere Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-20 Chunyue Ma, Xiaoyue Wang, Chaoyang Wu
Changes in the dates of autumn foliar senescence (DFS) have significant impacts on regional carbon uptake, while current approaches for the estimation of DFS are still lacking. The most important issue is that there are complicated factors that affect the DFS, among which drought effects probably have contributed the most. Using long-term DFS observations derived from the third-generation normalized
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Hydrometeorology-wildfire relationship analysis based on a wildfire bivariate probabilistic framework in different ecoregions of the continental United States Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-20 Ke Shi, Yoshiya Touge, So Kazama
Wildfires are a natural part of the ecosystem in the U.S.. It is vital to classify wildfires using a comprehensive approach that simultaneously considers wildfire activity (the number of wildfires) and burned area. On this basis, the influence of hydrometeorological variables on wildfires can be further analyzed. Therefore, this study first classified wildfire types using a wildfire bivariate probability
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Energy balance closure at FLUXNET sites revisited Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-18 Matthias Mauder, Martin Jung, Paul Stoy, Jacob Nelson, Luise Wanner
The FLUXNET network with numerous eddy covariance stations distributed worldwide is an important backbone for the study of ecosystem-atmosphere interactions. In order to provide reliable data for a variety of related research fields all parts of the ecosystem-atmosphere interactions need to be fully captured. Energy balance closure can be an indicator that all fluxes are fully recorded. However, in
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Performance of nine maize phenology models in China under historical climate change conditions Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-18 Xiaofeng Kang, Dingrong Wu, Jiaojiao Tan, Peijuan Wang, Yuping Ma, Jianying Yang, Chunyi Wang, Zhiguo Huo, Qi Tian, Qiang Yu
Accurate and unbiased simulation of crop phenology under various climate conditions is a necessary feature of phenology models. Nine models were evaluated for simulating the vegetative growth period (VGP) and the reproductive growth period (RGP) of maize (Zea mays L.) under historical climate variation. Seven models were based on a constant thermal/photothermal assumption (MAIS, SIMCOY, EPIC, MCWLA
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Minor carbon sequestration under nitrogen deposition due to downregulated nitrogen uptake and use efficiency Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-17 Song Wang, Ruiyang Zhang, Yuanyuan Huang, Yiqi Luo, Weinan Chen, Yahai Zhang, Jinsong Wang, Shuli Niu
Global nitrogen (N) deposition substantially enhances ecosystem carbon cycling but usually results in minor carbon sequestration. The mechanisms underlying the minor stimulation of N deposition on carbon sequestration are not fully understood. Here, we used 22 sets of observations from a gradient N addition experiment with rates at 0, 2, 4, 8, 16, to 32 g N·m-2·year-1 in an alpine meadow ecosystem
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Soil moisture and precipitation dominate the response and recovery times of ecosystems from different types of flash drought in the Yangtze River Basin Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-16 Chen Hu, Dunxian She, Gangsheng Wang, Liping Zhang, Zhaoxia Jing, Si Hong, Zhihong Song, Jun Xia
Flash droughts and their ecological impacts on terrestrial ecosystems have recently garnered increased attention due to their rapid intensification. However, research on the response and recovery of ecosystems to flash droughts, particularly regarding different types of flash droughts and their determinants, remains relatively limited. Here we classified flash droughts into meteorological, evaporative
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Forecasting dead fuel moisture content below forest canopies – A seven-day forecasting system Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-16 Christopher Sean Lyell, Usha Nattala, Thomas Keeble, Elena M. Vella, Rakesh Chandra Joshi, Zaher Joukhadar, Jonathan Garber, Simon J Mutch, Tim Gazzard, Tom Duff, Gary Sheridan
Accurate forecasting of forest fuel moisture is critical for decision making for bushfire risk and prescribed burning. In-situ dead fuel moisture content (DFMC) monitoring (fuelsticks) has improved significantly, along with improvements in weather forecasting and spatial representation of forest density. Machine learning (ML) models have also out-performed traditional fuel moisture estimation approaches
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Hazard assessment of rice cold damage based on energy balance in paddy field Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-14 Xueke Yan, Ying Guo, Bing Ma, Yunmeng Zhao, Suri Guga, Jiquan Zhang, Xingpeng Liu, Zhijun Tong, Chunli Zhao
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Future changes in agrometeorological extremes in the southern Mediterranean region: When and where will they affect croplands and wheatlands? Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-14 Behnam Mirgol, Bastien Dieppois, Jessica Northey, Jonathan Eden, Lionel Jarlan, Saïd Khabba, Michel Le Page, Gil Mahe
Climate change and extremes are increasingly threatening food security, especially in the Global South. Here, we examine how croplands and wheatlands …
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Proxy detection of wheat water stress from photochemical reflectance index and land surface temperature data Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-13 Zoubair Rafi, Valérie Le Dantec, Saïd Khabba, Abdelhakim Amazirh, Patrick Mordelet, El Houssaine Bouras, Salah Er-Raki, Abdelghani Chehbouni, Olivier Merlin
In semi-arid and arid regions, crops face elevated atmospheric demands and endure prolonged periods of moderate to severe water scarcity. In this context, this study investigated the effectiveness of the photochemical reflectance index (PRI) and a normalized surface temperature index (Tnorm) for proxy detection of the water stress of winter wheat crops. Furthermore, the potential of PRI for characterizing
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Coupled models of water and carbon cycles from leaf to global: A retrospective and a prospective Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-13 Ying-Ping Wang, Lu Zhang, Xu Liang, Wenping Yuan
Our understanding of water and carbon cycles and their coupling has advanced significantly over the last six decades. In this review, we will examine the progress made since the 1960s and explore how key developments in the studies of water and carbon cycles on land have influenced the way we model these two cycles from leaf to global scales. We will particularly focus on the Penman-Monteith equation
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MONTPEL: A multi-component Penman-Monteith energy balance model Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-12 Rami Albasha, Loïc Manceau, Heidi Webber, Michaël Chelle, Bruce Kimball, Pierre Martre
Mechanistic modelling is gradually replacing empiricism in crop models, focusing on leaf-level physiological processes. This shift necessitates simulating crop surface temperature at infra-canopy sub-daily scales but many crop models still rely on empirical formulations for canopy temperature estimation, typically on a daily basis. We developed MONTPEL, a multi-component Penman-Monteith model that
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Tree rings of Terminalia catappa Linn. and climate variability in a tropical South American estuary Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-12 Renata Cristina Bovi, Daigard Ricardo Ortega_Rodriguez, Bruna Hornink, Gabriela Morais Olmedo, Gabriel Assis-Pereira, Mario Tomazello-Filho, Miguel Cooper, Angelo Fraga Bernardino, Tiago Osório Ferreira
Given the prevailing uncertainties surrounding regional climate variability in southeastern Brazil, it is necessary to explore proxy records. The present dendrochronological study investigates the climate variations in the Neotropical estuarine system of the Rio Doce basin based on tree-rings records of 40 trees of Terminalia catappa Linn. The study demonstrates that annual growth rings of the species
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Questioning voxel grids: Semi-continuous sampling of leaf area density using airborne waveform lidar in boreal and hemiboreal conifer and broadleaved forests Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-11 Daniel Schraik, Aarne Hovi, Miina Rautiainen
Plant area density measurements provide spatially explicit information about the density and distribution of canopy elements. This information is needed for modeling of the forest radiation regime, climate and for other ecological applications. Terrestrial laser scanning (TLS) provides detailed information about canopy structure, but it cannot be used for monitoring large areas. Airborne laser scanning
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Fuel constraints, not fire weather conditions, limit fire behavior in reburned boreal forests Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-11 Katherine Hayes, Chad M. Hoffman, Rodman Linn, Justin Ziegler, Brian Buma
Fire frequency in boreal forests has increased via longer burning seasons, drier conditions, and higher temperatures. However, fires have historically self-regulated via fuel limitations, mediating the effects of changes in climate and fire weather. Early post-fire boreal forests (10–15 years postfire) are often dominated by mixed conifer-broadleaf or broadleaf regeneration, considered less flammable
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Climatic controls of fire activity in the red pine forests of eastern North America Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-10 Daniela Robles, Yves Bergeron, Jed Meunier, Michael Stambaugh, Patricia Raymond, Alexander Kryshen, Charles Goebel, Jonathan Eden, Igor Drobyshev
Large-scale modes of climate variability influence forest fire activity and may modulate the future patterns of natural disturbances. We studied the effects of long-term changes in climate upon the fire regime in the red pine forests of eastern North America using (a) a network of sites with dendrochronological reconstructions of fire histories over 1700–1900 A.D., (b) reconstructed chronologies of
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Changes in plant litter and root carbon inputs alter soil respiration in three different forests of a climate transitional region Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-08 Jiayin Feng, Chunyu Wang, Jingjing Gao, Huixia Ma, Zheng Li, Yuanfeng Hao, Xueli Qiu, Jingyi Ru, Jian Song, Shiqiang Wan
Both plant litter and roots are major sources of soil carbon (C) pools, however, the relative contributions of these two C input pathways to soil respiration, especially in different forest types, are largely unexplored, leading to a great uncertainty in estimating soil C sinks. As part of a field experiment with five-year (2016–2020) C input manipulations in three forests all between the subtropical
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Implications of energy balance non-closure on carbon dioxide flux uncertainties: Insights from large eddy simulations in convective boundary layers Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-07 Yanzhao Zhou, Heping Liu, Matthias Sühring, Xin Li
The non-closure of surface energy balance, often encountered in eddy covariance (EC) measurements, raises a critical query: does this non-closure lead to underestimated scalar fluxes, particularly CO2 flux (Fc), when using the same theoretical framework in EC? To address this question, we utilize high-resolution large-eddy simulations (LESs) to explore correlations between energy flux imbalances and
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Should two-parameter generalized complementary models for evaporation be simplified to single-parameter? A pairwise evaluation over grassland and forest sites Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-05 Songjun Han, Baozhong Zhang, Weijie Wang, Fuqiang Tian, Lei Wang
Models based on the complementary relationship for estimating evaporation typically incorporate two parameters, one for adjusting the relationship's shape and the other for formulating potential evaporation (). In practical applications, single-parameter versions are often derived by fixing one of these parameters. But there is ongoing debate about which parameter to fix and under what conditions.
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Modeling weather-driven long-distance dispersal of spruce budworm moths (Choristoneura fumiferana). Part 2: Flight model calibration using radar data Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-04 Matthew Garcia, Brian R. Sturtevant, Yan Boulanger, Jacques Régnière
In Part 1 of this series (Garcia et al., 2022), we introduced a novel individual-based model for the simulation of dispersal flight of adult spruce budworm (SBW: ) and demonstrated the results of that model under real weather conditions for two nights in July 2013 on which SBW mass dispersal events were observed by weather radar in southern Quebec, Canada. Here, following the selection of one uncertain
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Influence of film color, mulching ratio and soil–mulch contact degree on heat transfer in Northwest China Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-09-02 Yin Zhao, Zunqiu Xu, Xiaomin Mao, Sien Li, Xingchao Qi, Jiangang Che
The impact of diverse mulching factors on crop growth depends on their influences on heat transfer, while the precise effects of these factors on heat transfer remain unclear. To address this knowledge gap, we employed the CropSMPAC model to simulate energy fluxes and soil temperature under varying mulching conditions. Our study integrated a soil column experiment and a three–year field experiment
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Over 100-fold improvement in the accuracy of relaxed eddy accumulation flux estimates through error diffusion Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-30 Anas Emad
Measurements of atmosphere-surface exchange are largely limited by the availability of fast-response gas analyzers; this limitation hampers our understanding of the role of terrestrial ecosystems in atmospheric chemistry and global change. Current micrometeorological methods, compatible with slow-response gas analyzers, are difficult to implement, or rely on empirical parameters that introduce large
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Impacts of forest cover change on local temperature in Yangtze River Delta and Pearl River Delta urban agglomerations of China Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-29 Qing Liu, Wenjuan Shen, Tongyu Wang, Jiaying He, Pingting Cao, Tianyi Sun, Ying Zhang, Wenjing Ye, Chengquan Huang
The continuous economic and ecological construction in the Yangtze River Delta (YRD) and Pearl River Delta (PRD) has caused frequent temporal and spatial changes in local forests, thus affecting the regional climate. Yet few studies have addressed the temperature feedback through biophysical mechanisms due to forest change in two urban agglomerations of China. We compared MODIS and Landsat-based land
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Surface energy fluxes in a drip-irrigated agroecosystem: Unique advection effect of oasis Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-29 Haichao Yu, Tianyi Yang, Sien Li, Shaozhong Kang, Taisheng Du, Yuexin Wang, Haochong Chen, Hui Guo
Surface energy fluxes, mainly encompassing the net radiation (), latent heat flux (LE), sensible heat flux (), and soil heat flux (), play an important role in the land-atmosphere interactions. However, almost all sites face the problem of energy imbalance, and advection fluxes associated with large inhomogeneous surfaces have been ignored, especially in arid oasis areas. In this study, a three-year
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Canopy temperature dynamics are closely aligned with ecosystem water availability across a water- to energy-limited gradient Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-28 Mostafa Javadian, Russell L. Scott, William Woodgate, Andrew D. Richardson, Matthew P. Dannenberg, William K. Smith
Canopy temperature (T) plays an important role in regulating the rates of mass and energy fluxes at the leaf surface. Better understanding of the relationship between T and water availability may enable more accurate monitoring of ecosystem functioning in a changing climate. Here, we used high spatiotemporal resolution thermal infrared cameras deployed at three eddy covariance flux tower sites along
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Impacts of forest canopy heterogeneity on plot-scale hydrometeorological variables - Insights from an experiment in the humid boreal forest with the Canadian Land Surface Scheme Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-22 Philippe Lagueux, Jean-Daniel Sylvain, Guillaume Drolet, Pierre-Erik Isabelle, Gonzalo Leonardini, Daniel F. Nadeau, François Anctil
High latitude regions, including the circumpolar boreal biome, are experiencing important changes in the availability of usable surface water because of climate change. In this context, an adequate representation of the land-atmosphere interaction is critical to ensure optimal management of current and future water resources, forest management, and climate prediction. However, the task is particularly
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Effects of slow temperature acclimation of photosynthesis on gross primary production estimation Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-20 Jia Bai, Helin Zhang, Rui Sun, Yuhao Pan
The slow temperature acclimation of photosynthesis has been confirmed through early field experiments and studies. However, this effect is difficult to characterize and quantify with some simple and easily accessible indicators. As a result, the impact of slow temperature acclimation of photosynthesis on gross primary production (GPP) estimation has often been overlooked or not integrated into most
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Are the ecosystem-level evaporative stress indices representative of evaporative stress of vegetation? Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-19 Pushpendra Raghav, Mukesh Kumar
Evaporative Stress Index (ESI), also sometimes referred as Evaporative Stress Ratio (ESR), has been widely used as an indicator of vegetation evaporative stress, and is often used to track forest and agriculture droughts. Lower the stress, higher is the value of ESI or ESR. The goal of this study is to assess the suitability of these indices for tracking vegetation evaporative stress. As the dynamics
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How advection affects the surface energy balance and its closure at an irrigated alfalfa field Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-18 Tianxin Wang, Joseph Alfieri, Kanishka Mallick, Ariane Arias-Ortiz, Martha Anderson, Joshua B. Fisher, Manuela Girotto, Daphne Szutu, Joseph Verfaillie, Dennis Baldocchi
Orbiting around the non-closure problem in eddy covariance, a new generation of high-resolution thermal imagery has revealed that advection may be more common than previously expected. To investigate this, we conducted an extensive study over an irrigated alfalfa field that experienced heat and moisture advection. Over the course of five analysis periods (37 days total), multiple tower arrays and profile
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The carbon balance and water use efficiency of an intensively managed forage crop in the Lower Fraser Valley in British Columbia, Canada Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-16 Patrick K.C. Pow, Rachhpal S. Jassal, Mark Johnson, Sean Smukler, Zoran Nesic, T. Andrew Black
Intensively managed grasslands have been found to be either carbon (C) sources or sinks depending on management and climate. This study reports the net ecosystem production (NEP) and latent heat fluxes () from a managed forage field at a dairy farm in Agassiz, British Columbia, Canada. The forage crop (ryegrass and tall fescue) was harvested up to 6 times a year. The field received multiple applications
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Soil moisture plays an increasingly important role in constraining vegetation productivity in China over the past two decades Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-14 Guizeng Qi, Dunxian She, Jun Xia, Jinxi Song, Wenzhe Jiao, Jiayu Li, Zheqiong Liu
Decreasing soil moisture (SM) and increasing vapor pressure deficit (VPD) are the main drought affecting factors of terrestrial vegetation productivity. Nevertheless, the impact of continued warming on the changing trend of SM and VPD constraints affecting vegetation productivity remains uncertain. Understanding the complex interactive effects of SM and VPD on vegetation is crucial for assessing drought
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The applicability of a SIF-based mechanistic model for estimating GPP at the canopy scale Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-14 Yanping Liu, Zhaoyong Hu, Genxu Wang, Arthur Gessler, Shouqin Sun
Mechanistically linking gross primary productivity (GPP) and sun-induced chlorophyll fluorescence (SIF) is an essential step to unleash the full potential of SIF for remote sensing-based predictions of GPP across biomes, climates, and spatiotemporal scales. The latest SIF-based mechanistic light response model that includes the fraction of open photosystem II reaction centers as key parameter (qMLR-SIF
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Quantifying the effects of diffuse photosynthetically active radiation on water use efficiency in different ecosystems Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-14 Fenghao Chen, Xiaoya Yang, Qiang Yu, Bo Han
Compared with direct radiation, diffuse radiation could be more efficiently used for photosynthesis because of the diffuse fertilization effect (DFE). Because carbon uptake and water loss are coupled through leaf stomata, DFE probably increases gross primary productivity (GPP) and evapotranspiration (ET) simultaneously. Multi-year eddy covariance flux observation data and simulated diffuse fraction
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Temporal accumulation and lag effects of precipitation on carbon fluxes in terrestrial ecosystems across semi-arid regions in China Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-13 Haixing Gong, Guoyin Wang, Chenqing Fan, Xianwang Zhuo, Lina Sha, Zexing Kuang, Jianrong Bi, Tiantao Cheng
Precipitation (PRE) plays a vital role in hydrological processes, ecological vegetation, and land-atmosphere interactions in semi-arid regions. Previous research has mainly focused on the impact of PRE on large-scale regional climate change and ecological evolution. However, there have been few studies on the long-term effects of PRE on carbon fluxes in these regions, especially the time-accumulation
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Forest structural and microclimatic patterns along an elevational gradient in Mount Kenya Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-13 Jinlin Jia, Alice Catherine Hughes, Matheus Henrique Nunes, Erone Ghizoni Santos, Petri K.E. Pellikka, Leena Kalliovirta, James Mwang ombe, Eduardo Eiji Maeda
Tropical mountain forests are important biodiversity hotspots, which host disproportionally high number of endemic species. However, the potential impacts of climate change in these areas are uncertain. A key factor contributing to this knowledge gap is that climatic conditions experienced by organisms inside tropical forests (i.e., microclimate) remain largely understudied. Due to the effects of topography
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A Bayesian inference approach to determine experimental Typha latifolia paludiculture greenhouse gas exchange measured with eddy covariance Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-13 Alexander J.V. Buzacott, Merit van den Berg, Bart Kruijt, Jeroen Pijlman, Christian Fritz, Pascal Wintjen, Ype van der Velde
Measurements of greenhouse gas exchange (GHG) using the eddy covariance method are crucial for identifying strategies to achieve emission reductions and carbon sequestration. There are many sites that have heterogeneous land covers where it would be useful to have balances of particular land areas, such as field trials of emission mitigation strategies, but the flux footprint infrequently covers only
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Uncertainty of canopy interception modeling in high-altitude Picea crassifolia forests of Semi-arid regions Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-12 Junjun Yang, Zhibin He, Pengfei Lin, Jun Du, Dong Shi, Meng Bai
The study of physically-based rainfall interception is crucial for comprehending the water balance within forest ecosystems and the contribution of vegetation to the hydrological cycle, particularly in arid/semi-arid ecosystems. Despite its importance, there is a lack of comprehensive sensitivity analysis and parameter optimization, resulting in uncertain or suboptimal predictive accuracy. To mitigate
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Observed surface heat fluxes partitioning during the local growing season over the Tibetan Plateau Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-10 Mingshan Deng, Xianhong Meng, Danrui Sheng, Hanlin Niu, Peili Wu, Zhaoguo Li, Lin Zhao, Hao Chen, Lunyu Shang, Shaoying Wang, Shihua Lyu
Turbulent heat fluxes across the surface are an important mechanism of land-atmosphere coupling. But there is still a lack of sufficient observational measurements, particularly over the climate sensitive Tibetan Plateau (TP). This paper examines the partitioning between sensible and latent heat fluxes during growing season using the Bowen ratio as a diagnostic based on eddy covariance measurements
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Annual and seasonal dynamic of carbon sequestration in a Patagonian steppe Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-10 A. Burek, S.J. Bucci, L. Carbonell-Silletta, A. Cavallaro, J.O. Askenazi, D.A. Pereyra, M.P. Cristiano, G. Goldstein, F.G. Scholz
Arid and semiarid ecosystems comprise approximately 40 % of the global terrestrial surface and play an important role in the carbon-climate system. However, despite their large geographic extension in South America, they are largely under-represented in studies of ecosystem carbon fluxes. Eddy-covariance measurements of net ecosystem carbon exchange (NEE) were carried out in a Patagonian steppe co-dominated
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Water availability control the seasonal and inter-annual variability of CO2 fluxes in an alpine meadow on the eastern Tibetan Plateau Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-10 Shaoying Wang, Yu Zhang, Xianhong Meng, Lunyu Shang, Zhaoguo Li, Suosuo Li
Alpine ecosystems may be contribute to increasing atmospheric carbon dioxide (CO2) concentrations under intensified climate change on the Tibetan Plateau (TP). The eddy covariance technique was used in this research to examine how net ecosystem CO2 exchange (NEE) and its component fluxes, gross primary production (GPP), and ecosystem respiration (ER) varied over 10 years (from 2010 to 2019) in an alpine
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Geometry and surface manipulation impact on passive dew and rain collection Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-08 Soroush Moradi Zavie Kord, Juuso Tuure, Matti Räsänen, Szabolcs Galambosi, Laura Alakukku
In water-scarce regions, passive dew collectors may serve as vital supplementary water sources by collecting dew and rainwater, especially in arid or semi-arid African areas. This study examined enhancements to the standard passive dew collectors through a field experiment, which includes modification such as increased surface roughness through sandblasting (25 % coverage), adjusting panel geometry
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Solar-induced fluorescence-based phenology of subtropical forests in China and its response to climate factors Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-07 Jiacong Yu, Xuejian Li, Huaqiang Du, Fangjie Mao, Yanxin Xu, Zihao Huang, Yinyin Zhao, Lujin Lv, Meixuan Song, Lei Huang, Dejin Dong
Vegetation phenology refers to the cyclical changes of plant development in different seasons of the year, and is the result of the interaction between environmental factors and biological internal regulatory mechanisms. Current large-scale phenology studies mainly use vegetation indices for remote sensing retrieval, while the greenness information of subtropical forests is inconspicuous, causing regular
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Trees in cooler regions are more vulnerable to thermal stress: Evidence from temperate poplar plantations in Northern China during the 2022 heatwaves Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-03 Xin Kong, Shusen Zhang, Aoyu Wang, Yang Liu, Kai Wang, Xiaoning Zhao, Nan Di, Changjun Ding, Ximeng Li, Benye Xi
Climate change is resulting in more intense and frequent heatwaves, posing a potential threat to the structure and function of forest biome. However, due to the lack of in-situ data, the responses of forest plantations to heatwaves and the role of growth environments and management practices in mitigating these effects remain poorly understood. To address these knowledge gaps, we took advantage of
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Attention mechanism-based deep learning approach for wheat yield estimation and uncertainty analysis from remotely sensed variables Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-02 Huiren Tian, Pengxin Wang, Kevin Tansey, Jie Wang, Wenting Quan, Junming Liu
Rapid and accurate crop yield estimation is an imperative aspect of agricultural planning that is important for crop management, food security and commodity trading. There are many related factors affecting wheat yield and the relationship between them and the yield is complicated, with nonlinear spatial-temporal characteristics that are difficult to describe accurately with mathematical functions
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Grassland biomass allocation across continents and grazing practices and its response to climate and altitude Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-08-01 Jianjun Cao, Yumei Li, Asim Biswas, Nicholas M. Holden, Jan F. Adamowski, Fengchu Wang, Shuyan Hong, Yanyan Qin
Biomass allocation in grasslands is key to understanding plant response to environmental changes and grazing management. Yet, global studies on how this split between above-ground and below-ground biomass varies across continents and grazing practices are notably scarce. We employ a comprehensive field-oriented grassland database to examine differences in total net primary productivity (TNPP), above-ground
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Integrated large-eddy simulation for modeling plant-tissue warming induced by wind machines in an orchard canopy Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-07-30 Yi Dai, Antoon van Hooft, Edward G. Patton, Judith Boekee, Steven van der Linden, Marie-Claire ten Veldhuis, Bas J.H. van de Wiel
Wind machines are increasingly used to mitigate spring frost damage in agricultural sectors. Complementing quasi-3D temperature measurements to quantify the warming effects of wind machines (Dai et al., 2023), this study develops a numerical model to quantify warming effects on air and plant tissues and resolve the dynamic interplay between turbulent rotating plumes and canopy structure. We implement
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Agreement of multiple night- and daytime filtering approaches of eddy covariance-derived net ecosystem CO[formula omitted] exchange over a mountain forest Agric. For. Meteorol. (IF 5.6) Pub Date : 2024-07-29 Alexander Platter, Katharina Scholz, Albin Hammerle, Mathias W. Rotach, Georg Wohlfahrt
The assessment of net ecosystem CO2 exchange often relies on eddy covariance measurements. Under stable, low-turbulence conditions, the measured flux may not be representative of the net ecosystem exchange (NEE), as unmeasured fluxes (e.g., advection) can become relevant. Consequently, such periods need to be filtered out for robust flux calculations. Typically, the focus lies on nighttime filtering