Major contributions of agricultural management practices to topsoil organic carbon distribution and accumulation in croplands of East China over three decades
文献类型：期刊论文
| 作者 | Pu, Yue3; Yang, Lin3; Zhang, Lei3; Huang, Haili3; Zhang, Ganlin2; Zhou, Chenghu1,3 |
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2024 |
| 卷号 | 359页码:12 |
| 关键词 | Agricultural management Soil organic carbon distribution Temporal change Path analysis |
| ISSN号 | 0167-8809 |
| DOI | 10.1016/j.agee.2023.108749 |
| 通讯作者 | Yang, Lin(yanglin@nju.edu.cn) |
| 英文摘要 | Multiple natural and anthropogenic factors jointly drive the spatial distribution of soil organic carbon (SOC) and its dynamics in croplands. Among these factors, agricultural management practices have caused considerable impacts. Previous studies on the driving factors of SOC in croplands have provided significant understanding on this matter. However, whether and how the effects and interplay of these drivers change over time is often unknown, especially agricultural activities. To measure the effects of agricultural management practices on the spatial distribution and temporal change of SOC incorporating the network relationships with other natural drivers at the regional scale, we conducted partial least squares path analysis on the topsoil organic carbon content using two historical soil datasets from cropland samples in East China obtained during the 1980s and the 2010s. Eight indicators and their temporal changes reflecting climate, agricultural management, and edaphic conditions were used to quantify the driving mechanisms of the spatial distribution and temporal change of SOC. The drivers of SOC distribution showed that high SOC was mostly distributed in soils with a relatively low pH and high clay content in warm humid climates. High SOC was associated with the application of N fertilizer, crop residue input, and agricultural machinery in the 1980s and 2010s. The effect of N fertilization on SOC distribution increased from the 1980s to the 2010s, whereas the total edaphic effects significantly decreased from 0.62 to 0.25 (P < 0.01). Regarding the drivers of SOC change over the three decades, the edaphic effects presented the strongest effect (path coefficient of 0.74, P < 0.01), including the negative effects of topsoil acidity and baseline SOC level, as well as the positive effects of total nitrogen (TN) and clay content change. Croplands with lower intensity of management practices in the 1980s generally attained more development in agricultural modernization, which led to a considerable SOC increase. Our research revealed the importance of agricultural management practices on the spatial distribution and temporal change of cropland SOC at the regional scale. The results emphasize the need to measure the changing driving mechanisms of SOC dynamics. The findings indicate that indicators reflecting the effects of agricultural management practices should be included in digital mapping and process-based modeling of soil carbon at different spatiotemporal scales to improve prediction accuracy. |
| WOS关键词 | SOIL ; CLIMATE ; STORAGE ; FEEDBACKS ; EVOLUTION ; POLICY |
| 资助项目 | National Natural Science Founda- tion of China[41971054] ; Fundamental Research Funds for the Central Universities[0209-14380115] |
| WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001084843200001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Founda- tion of China ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/199144]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Lin |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 3.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pu, Yue,Yang, Lin,Zhang, Lei,et al. Major contributions of agricultural management practices to topsoil organic carbon distribution and accumulation in croplands of East China over three decades[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2024,359:12. |
| APA | Pu, Yue,Yang, Lin,Zhang, Lei,Huang, Haili,Zhang, Ganlin,&Zhou, Chenghu.(2024).Major contributions of agricultural management practices to topsoil organic carbon distribution and accumulation in croplands of East China over three decades.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,359,12. |
| MLA | Pu, Yue,et al."Major contributions of agricultural management practices to topsoil organic carbon distribution and accumulation in croplands of East China over three decades".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 359(2024):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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