Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15875 |
Differential effects of altered precipitation regimes on soil carbon cycles in arid versus humid terrestrial ecosystems | |
Bin Wang; Yali Chen; Yan Li; Hui Zhang; Kai Yue; Xingchang Wang; Yuandan Ma; Jian Chen; Meng Sun; Zhuo Chen; Qiqian Wu | |
2021-09-17 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Changes in precipitation regimes have significant effects on soil carbon (C) cycles; however, these effects may vary in arid versus humid areas. Additionally, the corresponding details of soil C cycles in response to altered precipitation regimes have not been well documented. Here, a meta-analysis was performed using 845 pairwise observations (control vs. increased or decreased precipitation) from 214 published articles to quantify the responses of the input process of exogenous C, the contents of various forms of C in soil, and the soil-atmosphere C fluxes relative to increased or decreased precipitation. The results showed that the effects of altered precipitation regimes did not differ between rainfall and snowfall. Increased precipitation significantly enhanced the soil C inputs, pools and outputs by 18.17%, 18.50%, and 21.04%, respectively, while decreased precipitation led to a significant decline in these soil C parameters by 10.18%, 9.96%, and 17.98%, respectively. The effects of increased precipitation on soil C cycles were more significant in arid areas (where mean annual precipitation, MAP <500 mm), but the effects of decreased precipitation were more significant in humid areas (where MAP ≥500 mm), indicating that the original MAP partially determined the responses of the soil C cycles to altered precipitation regimes. This study implies that for the same of precipitation variation, soil C cycles respond at different magnitudes: not only should the direction (decrease vs. increase) be counted but also the region (arid vs. humid) should be considered. These results deepened our understanding on regional differentiation in soil C cycles under climate change scenarios. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/338667 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Bin Wang,Yali Chen,Yan Li,et al. Differential effects of altered precipitation regimes on soil carbon cycles in arid versus humid terrestrial ecosystems[J]. Global Change Biology,2021. |
APA | Bin Wang.,Yali Chen.,Yan Li.,Hui Zhang.,Kai Yue.,...&Qiqian Wu.(2021).Differential effects of altered precipitation regimes on soil carbon cycles in arid versus humid terrestrial ecosystems.Global Change Biology. |
MLA | Bin Wang,et al."Differential effects of altered precipitation regimes on soil carbon cycles in arid versus humid terrestrial ecosystems".Global Change Biology (2021). |
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