Effects of grazing on soil respiration in global grassland ecosystems

文献类型： 外文期刊

第一作者： Li, Shucheng

作者： Li, Shucheng;Shao, Qingqin;Xing, Tingting;Sa, Rula;Zhang, Yujuan;Jin, Ke;Tang, Shiming;Chen, Hongyang;Wang, Chengjie

作者机构：

关键词： Grassland; Grazing; Meta -analysis; Soil respiration

期刊名称：SOIL & TILLAGE RESEARCH （ 影响因子：6.5； 五年影响因子：7.3 ）

ISSN： 0167-1987

年卷期： 2024 年 238 卷

页码：

收录情况： SCI

摘要： Soil respiration is an important process in the global carbon cycle, one that plays a crucial role in altering carbon dioxide levels in the atmosphere. However, the effects of grazing on soil respiration at the global scale remain unclear. Here, we analyzed 688 paired observations from 69 studies worldwide and found that grazing substantially suppresses soil respiration (including autotrophic respiration and heterotrophic respiration). Moreover, these negative effects on soil respiration were amplified at higher grazing intensity, longer grazing duration (> 10 years) and higher temperature (> 5 C-degrees). Importantly, changes in belowground biomass drive soil respiration in response to grazing in grassland ecosystems worldwide. Overall, accurately predicting the soil respiration pattern in grazed grasslands allows us to minimize the impact of grazing on grassland functional structure and improve the sustainability of livestock production.

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