Exploring Northwest China's agricultural water-saving strategy: analysis of water use efficiency based on an SE-DEA model conducted in Xi'an, Shaanxi Province

被引：28

作者：

Mu, L. ^{[1
]}

Fang, L. ^{[1
]}

Wang, H. ^{[1
]}

Chen, L. ^{[1
]}

Yang, Y. ^{[1
]}

Qu, X. J. ^{[1
]}

Wang, C. Y. ^{[1
]}

Yuan, Y. ^{[1
]}

Wang, S. B. ^{[1
]}

Wang, Y. N. ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Northwest Inst Hist Environm & Socioecon Dev, Xian 710062, Shaanxi, Peoples R China

来源：

WATER SCIENCE AND TECHNOLOGY | 2016年 / 74卷 / 05期

基金：

中国博士后科学基金;

关键词：

agricultural water use efficiency; China; super-efficient DEA model; water saving; ARID REGION; IRRIGATION; FARMERS; YIELD; DISTRICT; QUALITY; REGIMES; SYSTEMS; BASIN; WHEAT;

D O I：

10.2166/wst.2016.286

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Worldwide, water scarcity threatens delivery of water to urban centers. Increasing water use efficiency (WUE) is often recommended to reduce water demand, especially in water-scarce areas. In this paper, agricultural water use efficiency (AWUE) is examined using the super-efficient data envelopment analysis (DEA) approach in Xi'an in Northwest China at a temporal and spatial level. The grey systems analysis technique was then adopted to identify the factors that influenced the efficiency differentials under the shortage of water resources. From the perspective of temporal scales, the AWUE increased year by year during 2004-2012, and the highest (2.05) was obtained in 2009. Additionally, the AWUE was the best in the urban area at the spatial scale. Moreover, the key influencing factors of the AWUE are the financial situations and agricultural water-saving technology. Finally, we identified several knowledge gaps and proposed water-saving strategies for increasing AWUE and reducing its water demand by: (1) improving irrigation practices (timing and amounts) based on compatible water-saving techniques; (2) maximizing regional WUE by managing water resources and allocation at regional scales as well as enhancing coordination among Chinese water governance institutes.

引用

页码：1106 / 1115

页数：10

共 44 条

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