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The Evaluation of Regional Water-Saving Irrigation Development Level in Humid Regions of Southern China

1
State Key Laboratory of Hydraulics and Mountain River Engineering & College of Water Resource and Hydropower, Sichuan University, Chengdu 610025, China
2
Provincial Key Laboratory of Water-Saving Agriculture in Hill Areas of Southern China, Chengdu 610066, China
3
International School of Technical Education, Sichuan College of Architectural Technology, Deyang 618000, China
4
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling 712100, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(1), 172; https://doi.org/10.3390/w11010172
Received: 20 December 2018 / Revised: 12 January 2019 / Accepted: 14 January 2019 / Published: 18 January 2019
(This article belongs to the Special Issue Advances in Hydraulics and Hydroinformatics)
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Abstract

Water-saving irrigation development level (WIDL) refers to reasonably and accurately judging a water-saving area based on the analysis of all factors affecting the water-saving irrigation development. The evaluation of regional WIDL is the premise of scientific planning guidance to irrigation work. How to select reasonable evaluation indexes and build a scientific and comprehensive model to evaluate WIDL is of great significance. In this study, the comprehensive evaluation index system of WIDL in 21 cities (states) of the Sichuan province in China (a typical humid region in southern China) was constructed, and the TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution) method was improved to evaluate WIDL. Results showed that the overall development level of water-saving irrigation was “poor” in Sichuan province. The water-saving irrigation level turned out to be “good” in three regions with advantageous geographical conditions and developed economies, “general” in four regions with good economic levels where agronomy water saving has been popularized, and “poor” in fourteen regions of mountainous and hilly areas, especially Ganzi, Aba, and Liangshan, located in the Northwest plateau of Sichuan province, with poor natural resources and insufficient economies. The evaluation results were in good agreement with the actual situation, and in this area, there is enormous potential for the development of water-saving irrigation strategies. This study provides an important technical approach for the evaluation of water-saving irrigation development in humid regions of Southern China. View Full-Text
Keywords: water-saving irrigation development level; Sichuan province; TOPSIS method water-saving irrigation development level; Sichuan province; TOPSIS method
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Zhao, L.; Zhang, L.; Cui, N.; Liang, C.; Feng, Y. The Evaluation of Regional Water-Saving Irrigation Development Level in Humid Regions of Southern China. Water 2019, 11, 172.

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