Changes in Cultivated Land Area and Associated Soil and SOC Losses in Northeastern China: The Role of Land Use Policies
文献类型：期刊论文
| 作者 | Fang, Haiyan1,2 |
| 刊名 | INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 18期号:21页码:13 |
| 关键词 | cultivated land soil erosion SOC losses land use policy black soil region |
| DOI | 10.3390/ijerph182111314 |
| 通讯作者 | Fang, Haiyan(fanghy@igsnrr.ac.cn) |
| 英文摘要 | Land use policy is the driving factor influencing land use; however, little research has been conducted to identify the role of agricultural policy in influencing land cultivation and associated soil and soil organic carbon (SOC) losses. The aims of this study were to explore temporal changes in cultivated land, soil erosion, and SOC loss and to identify the role of land use policy. The present study was conducted using the revised universal soil loss equation by integrating remote sensing images from 1980, 1990, 2000, and 2017. The study found that cultivated land areas increased from 275.11 thousand km(2) in 1980, to 300.03 thousand km(2) in 2000, and to 344.16 thousand km(2) in 2010, and then decreased by 326.94 thousand km(2). The mean soil loss rates changed from 590.66 t & BULL;km(-2)& BULL;yr(-1) in 1980 to 634.25 t & BULL;km(-2)& BULL;yr(-1) in 2010, and then decreased to 495.66 t & BULL;km(-2)& BULL;yr(-1) in 2017. Soil loss rate increased with increasing slope gradient. The changes in SOC loss rates demonstrated the same pattern as that of soil loss, with the largest loss rate of 728.27 kg & BULL;km(-2)& BULL;yr(-1). These changes can be explained by changed land use policy and population growth. In future land use management, reasonable implementation of soil conservation measures should be undertaken to reduce soil and SOC losses in the black soil region of northeastern China. |
| WOS关键词 | BLACK SOIL ; ORGANIC-CARBON ; AGRICULTURAL CATCHMENT ; CONSERVATION MEASURES ; WATER EROSION ; REGION ; DYNAMICS ; IMPACTS ; RAINFALL |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA28010300] ; National Natural Science Foundation of China[41977066] |
| WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| WOS记录号 | WOS:000722387000001 |
| 出版者 | MDPI |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/168165]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Fang, Haiyan |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proces, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Haiyan. Changes in Cultivated Land Area and Associated Soil and SOC Losses in Northeastern China: The Role of Land Use Policies[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2021,18(21):13. |
| APA | Fang, Haiyan.(2021).Changes in Cultivated Land Area and Associated Soil and SOC Losses in Northeastern China: The Role of Land Use Policies.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,18(21),13. |
| MLA | Fang, Haiyan."Changes in Cultivated Land Area and Associated Soil and SOC Losses in Northeastern China: The Role of Land Use Policies".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 18.21(2021):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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