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The impact of cropland spatial shift on irrigation water use in China

文献类型：期刊论文

作者Xiang, Wenli3; Tan, Minghong3; Yang, Xue2; Li, Xiubin1,3
刊名ENVIRONMENTAL IMPACT ASSESSMENT REVIEW
出版日期2022-11-01
卷号97页码:9
关键词Irrigation water use Cropland spatial shift Land use and cover change China
ISSN号0195-9255
DOI10.1016/j.eiar.2022.106904
通讯作者Tan, Minghong(tanmh@igsnrr.ac.cn) ; Yang, Xue(yangx@nankai.edu.cn) ; Li, Xiubin(lixb@igsnrr.ac.cn)
英文摘要As the utmost component of water utilization, irrigation water use (IWU) has raised extensive concerns of academics who devoted to achieve regional water security. IWU per unit area of cropland varies across regions due to changing natural physical factors; thus, cropland spatial location change would drive regional total IWU variation even if the total area of cropland remains unchanged. Here, based on CROPWAT model and multi-source data, we estimated the IWU change caused by cropland spatial shift in China. Results show that cropland centroid in China moved to the northwest by approximately 56 km during 1990-2015, leading to national IWU increase by about 18 billion m(3) (7.3%). By region, IWU in the northwest enhanced the greatest with nearly 23 billion m(3), which was mainly caused by the high IWU per unit area of cropland (759-810 mm) which was more than five times as the national average. Furthermore, irrigation water productivity in the northwest (0.66 kg/m(3)) was relatively low, which was only 15% of the national average. Therefore, for alleviating water-grain contradiction, emphasis should be placed on raising yield and declining IWU per unit area on existing croplands rather than reclaiming new cropland in the northwest, which requires advanced production and irrigation technologies to be prioritized for the northwest. This research could provide valuable references for policymaking in order to achieve regional sustainable land-water management.
WOS关键词PLANTING STRUCTURE OPTIMIZATION ; LAND-USE CHANGES ; FOOD SECURITY ; EFFICIENCY ; BASIN ; AGRICULTURE ; CONSUMPTION ; TECHNOLOGY ; ALLOCATION ; SCARCITY
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000892872000016
出版者ELSEVIER SCIENCE INC
源URL[http://ir.igsnrr.ac.cn/handle/311030/187796]  
专题中国科学院地理科学与资源研究所
通讯作者Tan, Minghong; Yang, Xue; Li, Xiubin
作者单位1.Chinese Acad Sci, Int Coll, Beijing 100101, Peoples R China
2.Nankai Univ, Coll Environm Sci & Engn, Tianjin 300350, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Xiang, Wenli,Tan, Minghong,Yang, Xue,et al. The impact of cropland spatial shift on irrigation water use in China[J]. ENVIRONMENTAL IMPACT ASSESSMENT REVIEW,2022,97:9.
APA Xiang, Wenli,Tan, Minghong,Yang, Xue,&Li, Xiubin.(2022).The impact of cropland spatial shift on irrigation water use in China.ENVIRONMENTAL IMPACT ASSESSMENT REVIEW,97,9.
MLA Xiang, Wenli,et al."The impact of cropland spatial shift on irrigation water use in China".ENVIRONMENTAL IMPACT ASSESSMENT REVIEW 97(2022):9.

入库方式： OAI收割

来源：地理科学与资源研究所

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