Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15315 |
Asymmetric response of soil methane uptake rate to land degradation and restoration: Data synthesis | |
Junjun Wu; Qiong Chen; Wei Jia; Chunyan Long; Wenzhi Liu; Guihua Liu; Xiaoli Cheng | |
2020-09-06 | |
发表期刊 | Global Change Biology
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出版年 | 2020 |
英文摘要 | Land degradation and restoration profoundly affect soil CH4 uptake capacity in terrestrial ecosystems. However, a comprehensive assessment of the response of soil CH4 uptake to land degradation and restoration at global scale is not available. Here, we present a global meta‐analysis with a database of 228 observations from 83 studies to investigate the effects of land degradation and restoration on the capacity of soil CH4 uptake. We found that land degradation significantly decreased the capacity of soil CH4 uptake, except the conversion of pasture to cropland where the soil CH4 uptake rate showed no response. In contrast, all types of land restoration significantly increased the capacity of soil CH4 uptake. Interestingly, the response of soil CH4 uptake rate to land degradation and restoration was asymmetric: the increased soil CH4 uptake rate in response to the land restoration was smaller compared to the decrease in CH4 uptake rate induced by the land degradation. The effect of land degradation on soil CH4 uptake rate was not dependent on the time since land use change, but the CH4 sink strength increased with the time since land restoration. The response of soil CH4 uptake rate to both land degradation and restoration was predominantly regulated by changes in the soil water‐filled pore space, soil bulk density, and pH, whereas alterations in the substrate quantity and quality had negligible effect. Additionally, the effects of land degradation and restoration on soil CH4 uptake were strongly related to the mean annual precipitation and soil texture. Overall, our results provide novel insights for understanding of how land degradation and restoration can affect the CH4 sink strength of upland soils, and more importantly, our findings are beneficial to take measures to enhance the potential of soil CH4 uptake in response to global land use change. |
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/293986 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Junjun Wu,Qiong Chen,Wei Jia,et al. Asymmetric response of soil methane uptake rate to land degradation and restoration: Data synthesis[J]. Global Change Biology,2020. |
APA | Junjun Wu.,Qiong Chen.,Wei Jia.,Chunyan Long.,Wenzhi Liu.,...&Xiaoli Cheng.(2020).Asymmetric response of soil methane uptake rate to land degradation and restoration: Data synthesis.Global Change Biology. |
MLA | Junjun Wu,et al."Asymmetric response of soil methane uptake rate to land degradation and restoration: Data synthesis".Global Change Biology (2020). |
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