Plant diversity decreases greenhouse gas emissions by increasing soil and plant carbon storage in terrestrial ecosystems,Ecology Letters

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Plant diversity decreases greenhouse gas emissions by increasing soil and plant carbon storage in terrestrial ecosystems
Ecology Letters ( IF 7.6 ) Pub Date : 2024-07-11 , DOI: 10.1111/ele.14469
Pengfei Dang ₁ , Miaomiao Zhang ₁ , Xinli Chen ₂ , Michel Loreau _{3,

4} , J Emmett Duffy ₅ , Xin'e Li ₆ , Shuyue Wen ₁ , Xiaoqing Han ₁ , Lechen Liao ₁ , Tiantian Huang ₁ , Chenxi Wan ₁ , Xiaoliang Qin ₁ , Kadambot H M Siddique ₇ , Bernhard Schmid _{4,

8}

Affiliation

The decline in global plant diversity has raised concerns about its implications for carbon fixation and global greenhouse gas emissions (GGE), including carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). Therefore, we conducted a comprehensive meta‐analysis of 2103 paired observations, examining GGE, soil organic carbon (SOC) and plant carbon in plant mixtures and monocultures. Our findings indicate that plant mixtures decrease soil N2O emissions by 21.4% compared to monocultures. No significant differences occurred between mixtures and monocultures for soil CO2 emissions, CH4 emissions or CH4 uptake. Plant mixtures exhibit higher SOC and plant carbon storage than monocultures. After 10 years of vegetation development, a 40% reduction in species richness decreases SOC content and plant carbon storage by 12.3% and 58.7% respectively. These findings offer insights into the intricate connections between plant diversity, soil and plant carbon storage and GGE—a critical but previously unexamined aspect of biodiversity–ecosystem functioning.

中文翻译：

植物多样性通过增加陆地生态系统中的土壤和植物碳储存来减少温室气体排放

全球植物多样性的下降引发了人们对其对碳固定和全球温室气体排放（GGE）影响的担忧，其中包括二氧化碳（CO 2 ）、一氧化二氮（N 2 O) 和甲烷 (CH 4 ）。因此，我们对 2103 个配对观测结果进行了全面的荟萃分析，检查了 GGE、土壤有机碳 (SOC) 以及植物混合物和单一栽培中的植物碳。我们的研究结果表明，植物混合物减少了土壤氮2与单一栽培相比，O 排放量减少 21.4%。混合物和单一栽培之间的土壤二氧化碳没有显着差异2排放量，甲烷4排放或CH 4吸收。植物混合物比单一栽培表现出更高的 SOC 和植物碳储存。经过10年的植被发展，物种丰富度减少40%，SOC含量和植物碳储量分别减少12.3%和58.7%。这些发现为植物多样性、土壤和植物碳储存与GGE（生物多样性生态系统功能的一个关键但之前未经检验的方面）之间的复杂联系提供了见解。

更新日期：2024-07-11

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