Effect of cropland withdrawal on soil organic carbon in China, 1990-2018
文献类型：期刊论文
| 作者 | Yan, Ziyan; Tan, Minghong |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2023 |
| 卷号 | N/A |
| 关键词 | agricultural regions China cropland withdrawal regional differences soil organic carbon |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.4574 |
| 文献子类 | J |
| 英文摘要 | Soil organic carbon (SOC) is one of the most important soil attributes responsible for the sustainable maintenance of soil quality. In recent years, cropland withdrawal (CWD) (i.e., conversion into natural landscapes) in China has become a remarkable phenomenon of land use changes, driven by the spontaneous cropland abandonment by rural households and government-led conversion of cropland to forest and grassland. The CWD may affect SOC content and storage in China. Therefore, this study estimated the variation in SOC caused by CWD between 1990 and 2018 based on the grid data of land use and soil organic matter (SOM). The results showed that CWD had a significant effect on SOC. (1) From 1990 to 2018, the total area of CWD was about 358 x 10(3) km(2), an area that represented about 20% of the total area of cropland in China in 1990. In addition, within the total area of CWD, the proportions represented by the conversion of cropland to forest and grassland were the highest, reaching 58% and 39%, respectively. The former was mainly distributed in the southern part of China, especially in the southwestern mountainous area. The latter was largely concentrated in the northern part of China, especially in the Loess Plateau; (2) From 1990 to 2018, the average SOC content of CWD increased by about 10%, representing an increase of 193 Tg in soil organic carbon storage (SOCS). This is equivalent to six times the carbon emissions from agricultural land in China in 2019; (3) Among eight agricultural regions in China, the middle-lower Yangtze Plain had the largest area of CWD, which accounted for 19.9% of the total CWD of the whole country. |
| WOS关键词 | LAND-USE CHANGE ; FOR-GREEN PROGRAM ; MOUNTAINOUS AREAS ; LOESS PLATEAU ; FARMLAND ; SEQUESTRATION ; STOCKS ; PATTERNS ; CONVERSION ; STORAGE |
| 资助项目 | Third Xinjiang Scientific Expedition Program ; [2021xjkk0900] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| WOS记录号 | WOS:000907851800001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188576]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Institute of Geographic Sciences & Natural Resources Research, CAS 3.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Yan, Ziyan,Tan, Minghong. Effect of cropland withdrawal on soil organic carbon in China, 1990-2018[J]. LAND DEGRADATION & DEVELOPMENT,2023,N/A. |
| APA | Yan, Ziyan,&Tan, Minghong.(2023).Effect of cropland withdrawal on soil organic carbon in China, 1990-2018.LAND DEGRADATION & DEVELOPMENT,N/A. |
| MLA | Yan, Ziyan,et al."Effect of cropland withdrawal on soil organic carbon in China, 1990-2018".LAND DEGRADATION & DEVELOPMENT N/A(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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