Hierarchical analysis and fuzzy evaluation of comprehensive performance of typical water-saving irrigation techniques in Northwest China

被引：0
|
作者：
Jiang G. [1 ]
Wang Z. [1 ,2 ,3 ]
Suo Y. [1 ]
机构：
[1] Department of Hydraulic Engineering, Tsinghua University, Beijing
[2] State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing
[3] State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining
来源：
Qinghua Daxue Xuebao/Journal of Tsinghua University | 2019年 / 59卷 / 12期
关键词：
Analytic hierarchy process; Fuzzy comprehensive evaluation; Northwest China; System evaluation; Water-saving irrigation;
D O I：
10.16511/j.cnki.qhdxxb.2019.26.015
中图分类号：
学科分类号：
摘要：
Northwest China is a vast territory with scarce water resources and a fragile ecological environment system. Various water-saving irrigation techniques have been developed that need to be evaluated to facilitate sustainable development. This study presents an evaluation index system for water-saving irrigation techniques in the arid and semi-arid regions of Northwest China that incorporates the ecological vulnerability, economic development, climatic and geographical characteristics, irrigation development trends and labor costs. The model has 23 indicators in total with ecology, economics, adaptability, accuracy and intelligence level as the criterion layer. The analytic hierarchy process and the fuzzy comprehensive evaluation method were combined to determine the weights for the evaluation indicators and evaluation thresholds. The model was then used to evaluate three typical water-saving irrigation techniques, drip irrigation, sprinkler irrigation and small-scale border irrigation. The results show that the economics is the most important followed by the adaptability, ecology, intelligence level and accuracy. The most significant indicators in each of the five criterion layers are the investment per mu, water quantity adaptability, inhibition of groundwater over-exploitation, labor-saving and irrigation water use efficiency. Drip irrigation system is shown to be excellent system for Northwest China, while sprinkler irrigation and small-scale border irrigation systems have average usefulness in Northwest China. The methodology and results can be used for water-saving irrigation technique selection. © 2019, Tsinghua University Press. All right reserved.
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页码：981 / 989
页数：8
相关论文
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