Impact of spatiotemporal change of cultivated land on food-water relations in China during 1990-2015

doi:10.1016/j.scitotenv.2020.137119

	Impact of spatiotemporal change of cultivated land on food-water relations in China during 1990-2015
	Wang, Xue 2; Xin, Liangjie 2; Tan, Minghong 1,2; Li, Xiubin 2,3; Wang, Jiayue 2
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-05-10
卷号	716 页码:11
关键词	Land use change Crop yield Crop water productivity Green water proportion China
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.137119
通讯作者	Wang, Xue(wangxue@igsnrr.ac.cn)
英文摘要	The spatiotemporal change of cultivated land can exert significant effects on food production and the associated water consumption. The quantification of these effects is meaningful for guiding relevant policies. However, few studies have explored systematic methods assessing changes of food production and water consumption and the relations between them, caused by cultivated land change. This study developed new spatially explicit datasels for constant food crop yield and constant food crop water consumption, combining agricultural statistical data, the China-AEZ model, and the GIS spatial analysis method, and estimated the impact of cultivated land change on food crop production, food crop water consumption and food-water relations characterized by two major indicators, i.e., crop water productivity (CWP) and green water proportion (GWP), in China during 1990-2015. The results showed that the increase of approximately 0.80% in cultivated land area in China resulted in a decrease of approximately 0.37% in average food crop yield per unit area, an increase of approximately 1.97% in blue water consumption per unit area (ETblue), and continuous decreases in both total water consumption per unit area (ETa) and green water consumption per unit area (ETgreen), with overall rates of 2.41% and 3.11%, respectively, at the national scale from 1990 to 2015. Concurrently, the average CWP continuously increased with an overall rate of 2.06%, while the average GWP continuously decreased with an overall rate of 0.86% at the national scale. A low-level coupling trend of food-water relations was concluded, together with a negative environmental effect. The food-water relations were getting even worse in major cultivated land expansion areas and during the later period of 2000-2015. The findings of this study can be useful for providing a deep understanding of food-water relations corresponding to cultivated land change and giving suggestions for the sustainable development of cultivated land and the integrated management of water resources. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41701092] ; National Key Research and Development Program of China[2017YFE0104600]
WOS关键词	WINTER-WHEAT YIELD ; TILLAGE PRACTICES ; CROP PRODUCTION ; USE EFFICIENCY ; LOESS PLATEAU ; IRRIGATION ; PRODUCTIVITY ; HOUSEHOLD ; FOOTPRINT ; PROGRAM
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000519987300082
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133598]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Xue
作者单位	1.Univ Chinese Acad Sci, Int Coll, Beijing 10049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 10049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xue,Xin, Liangjie,Tan, Minghong,et al. Impact of spatiotemporal change of cultivated land on food-water relations in China during 1990-2015[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,716:11.
APA	Wang, Xue,Xin, Liangjie,Tan, Minghong,Li, Xiubin,&Wang, Jiayue.(2020).Impact of spatiotemporal change of cultivated land on food-water relations in China during 1990-2015.SCIENCE OF THE TOTAL ENVIRONMENT,716,11.
MLA	Wang, Xue,et al."Impact of spatiotemporal change of cultivated land on food-water relations in China during 1990-2015".SCIENCE OF THE TOTAL ENVIRONMENT 716(2020):11.