Increased crop water requirements have exacerbated water stress in the arid transboundary rivers of Central Asia
文献类型：期刊论文
| 作者 | Ruan, Hongwei1,2; Yu, Jingjie1,2 ; Wang, Ping1,2; Wang, Tianye1,2
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2020-04-15 |
| 卷号 | 713页码:12 |
| 关键词 | Crop water requirement Arid transboundary rivers Climate and cultivated land change Syr Darya Basin Central Asia |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.136585 |
| 通讯作者 | Yu, Jingjie(yujj@igsnrr.ac.cn) |
| 英文摘要 | Water scarcity and ecological degradation as a result of the expansion of irrigated agriculture in arid regions have become global issues. A better understanding of the changes in crop water requirements (CWRs) is important for promoting sustainable development, particularly the water resource management of transboundary rivers. In this study, the latest and complete meteorological station and crop area data, the CropWat model, and the slope method were used to estimate the CWR in the Syr Darya Basin (SDB) of Central Asia from 2000 to 2018. The spatiotemporal variation of the water requirements for primary crops at the city scale was first assessed. The impacts of climate and cultivated land change on the CWR were quantified, and the associated impacts of the CWR on the water resources and environment were discussed. The results revealed that the mean unit area CWR of the SDB was 944.1 mm and the rate of increase was 7.6 mm/a from 2000 to 2018. The area of the primary crops expanded by 5851.6 km(2), and the total CWR increased at a mean rate of 2.0 x 10(8) m(3)/a, with the majority of this change being concentrated between 2010 and 2018. By 2018, the total CWR reached 194.8 x 10(8) m(3). The lower reaches of the SDB were associated with a high CWR and a high rate of increase. Along with the reduction in basin water resources, the increased CWR has exacerbated the water stress in the SDB. Sensitivity analysis indicated that the dominant factors influencing the change in the CWR are cultivated land change (65.0%) and climate change (35.0%). Owing to a reasonable crop planting structure, the middle reaches maintained a relatively low CWR and rate of increase. Given the predicted changes in climate, optimizing crop planting structure and controlling the expansion of cultivated land in order to reduce the CWR can help to mitigate water scarcity. (C) 2020 Published by Elsevier B.V. |
| WOS关键词 | CLIMATE-CHANGE ; RESOURCES MANAGEMENT ; AGRICULTURAL LAND ; FERGANA VALLEY ; IMPACTS ; REGION ; BASIN ; PRODUCTIVITY ; SIMULATION ; CHALLENGES |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA20040302] ; National Natural Science Foundation of China[41877165] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000514544700075 |
| 出版者 | ELSEVIER |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/133551]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yu, Jingjie |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ruan, Hongwei,Yu, Jingjie,Wang, Ping,et al. Increased crop water requirements have exacerbated water stress in the arid transboundary rivers of Central Asia[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,713:12. |
| APA | Ruan, Hongwei,Yu, Jingjie,Wang, Ping,&Wang, Tianye.(2020).Increased crop water requirements have exacerbated water stress in the arid transboundary rivers of Central Asia.SCIENCE OF THE TOTAL ENVIRONMENT,713,12. |
| MLA | Ruan, Hongwei,et al."Increased crop water requirements have exacerbated water stress in the arid transboundary rivers of Central Asia".SCIENCE OF THE TOTAL ENVIRONMENT 713(2020):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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