当前位置:
X-MOL 学术
›
Glob. Change Biol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Drought‐Induced Weakening of Temperature Control on Ecosystem Carbon Uptake Across Northern Lands
Global Change Biology ( IF 10.8 ) Pub Date : 2025-01-22 , DOI: 10.1111/gcb.70032
Haohao Wu, Congsheng Fu, Kailiang Yu, Philippe Ciais, Ashley Ballantyne, Zhihua Liu, Brendan M. Rogers, Shilong Piao, Yizhao Chen, Lingling Zhang, Huawu Wu, Xingwang Fan, Jianyao Chen, Guishan Yang
Global Change Biology ( IF 10.8 ) Pub Date : 2025-01-22 , DOI: 10.1111/gcb.70032
Haohao Wu, Congsheng Fu, Kailiang Yu, Philippe Ciais, Ashley Ballantyne, Zhihua Liu, Brendan M. Rogers, Shilong Piao, Yizhao Chen, Lingling Zhang, Huawu Wu, Xingwang Fan, Jianyao Chen, Guishan Yang
Rapid warming in northern lands has led to increased ecosystem carbon uptake. It remains unclear, however, whether and how the beneficial effects of warming on carbon uptake will continue with climate change. Moreover, the role played by water stress in temperature control on ecosystem carbon uptake remains highly uncertain. Here, we systematically explored the trend in the temperature control on gross primary production (measured by “S GPP‐TAS ”) across northern lands (> 15°N) using a standardized multiple regression approach by controlling other covarying factors. We estimated S GPP‐TAS using three types of GPP datasets: four satellite‐derived GPP datasets, FLUXNET tower observed GPP datasets, and GPP outputs from nine CMIP6 models. Our analysis revealed a significant positive‐to‐negative transition around the year 2000 in the trend of S GPP‐TAS . This transition was primarily driven by synchronized changes in soil water content over time and space. The S GPP‐TAS trend transition covered about 32% of northern lands, especially in grasslands and coniferous forests where leaf water mediation and structural overshoot accelerated the drought‐induced transition, respectively. In the future, widespread negative S GPP‐TAS trends are projected in northern lands corresponding with decreasing soil water availability. These findings highlight the shrinking temperature control on northern land carbon uptake in a warmer and drier climate.
中文翻译:
干旱导致温度控制对北方陆地生态系统碳吸收的减弱
北方地区的快速变暖导致生态系统的碳吸收增加。然而,目前尚不清楚变暖对碳吸收的有益影响是否以及如何随着气候变化而继续存在。此外,水分胁迫在温度控制中对生态系统碳吸收的作用仍具有高度不确定性。在这里,我们通过控制其他协变因素,使用标准化的多元回归方法,系统地探讨了北方地区 (> 15°N) 总初级生产(由“SGPP-TAS”测量“)的温度控制趋势。我们使用三种类型的 GPP 数据集估计 SGPP-TAS:四个卫星衍生的 GPP 数据集、FLUXNET 塔观测 GPP 数据集和来自 9 个 CMIP6 模型的 GPP 输出。我们的分析显示,2000 年左右 SGPP-TAS 的趋势出现了显着的正向负转变。这种转变主要是由土壤含水量随时间和空间的同步变化驱动的。SGPP-TAS 趋势转变覆盖了约 32% 的北方土地,尤其是在草原和针叶林,叶水中介和结构超调分别加速了干旱诱导的转变。未来,预计北部土地将出现广泛的负面 SGPP-TAS 趋势,这与土壤水分供应的减少相对应。这些发现突出了在更温暖和更干燥的气候下,北方陆地碳吸收的温度控制缩小。
更新日期:2025-01-22
中文翻译:
干旱导致温度控制对北方陆地生态系统碳吸收的减弱
北方地区的快速变暖导致生态系统的碳吸收增加。然而,目前尚不清楚变暖对碳吸收的有益影响是否以及如何随着气候变化而继续存在。此外,水分胁迫在温度控制中对生态系统碳吸收的作用仍具有高度不确定性。在这里,我们通过控制其他协变因素,使用标准化的多元回归方法,系统地探讨了北方地区 (> 15°N) 总初级生产(由“SGPP-TAS”测量“)的温度控制趋势。我们使用三种类型的 GPP 数据集估计 SGPP-TAS:四个卫星衍生的 GPP 数据集、FLUXNET 塔观测 GPP 数据集和来自 9 个 CMIP6 模型的 GPP 输出。我们的分析显示,2000 年左右 SGPP-TAS 的趋势出现了显着的正向负转变。这种转变主要是由土壤含水量随时间和空间的同步变化驱动的。SGPP-TAS 趋势转变覆盖了约 32% 的北方土地,尤其是在草原和针叶林,叶水中介和结构超调分别加速了干旱诱导的转变。未来,预计北部土地将出现广泛的负面 SGPP-TAS 趋势,这与土壤水分供应的减少相对应。这些发现突出了在更温暖和更干燥的气候下,北方陆地碳吸收的温度控制缩小。