Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15157 |
Distinct controls over the temporal dynamics of soil carbon fractions after land use change | |
Zhongkui Luo; Raphael A. Viscarra Rossel; Zhou Shi | |
2020-05-31 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | Soil organic carbon (SOC), the largest terrestrial carbon pool, plays a significant role in soil‐related ecosystem services such as climate regulation, soil fertility and agricultural production. However, its fate under land use change is difficult to predict. A major issue is that SOC comprised of numerous organic compounds with potentially distinct and poorly understood turnover properties. Here we use spatiotemporal measurements of the particulate (POC), mineral‐associated (MOC) and charred SOC (COC) fractions from 176 trials involving changes in land use to assess their underlying controls. We find that the initial pool sizes of each of the three fractions consistently and dominantly control their temporal dynamics after changes in land use (i.e. the baseline effects). The effects of climate, soil physicochemical properties and plant residues, however, are fraction‐ and time‐dependent. Climate and soil properties show similar importance for controlling the dynamics of MOC and COC, while plant residue inputs (in term of their quantity and quality) are much less important. For POC, plant residues and management practices (e.g. the frequency of pasture in crop‐pasture rotation systems) are substantially more important, overriding the influence of climate. These results demonstrate the pivotal role of measuring SOC composition and considering fraction‐specific stabilization and destabilization processes for effective SOC management and reliable SOC predictions. |
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/271628 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Zhongkui Luo,Raphael A. Viscarra Rossel,Zhou Shi. Distinct controls over the temporal dynamics of soil carbon fractions after land use change[J]. Global Change Biology,2020. |
APA | Zhongkui Luo,Raphael A. Viscarra Rossel,&Zhou Shi.(2020).Distinct controls over the temporal dynamics of soil carbon fractions after land use change.Global Change Biology. |
MLA | Zhongkui Luo,et al."Distinct controls over the temporal dynamics of soil carbon fractions after land use change".Global Change Biology (2020). |
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