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| DOI：10.13522/j.cnki.ggps.2022161 |
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| Fuzzy Analytic Hierarchy Process for Evaluating Ecological Health of Water-saving Irrigation Districts |
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REN Pan, FEI Liangjun, FENG Chanli, TONG Haili,
JIANG Ruirui, JIE Feilong, GAO Xuyan, CHEN Siyuan
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1. State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, China;
2. Shaanxi Water Conservancy and Electric Power Survey and Design Institute, Xi’an 710001, China
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| Abstract: |
| 【Objective】Keeping irrigation districts healthy is critical to maintaining their economic and ecological service. We present a new method in this paper to comprehensively and systematically evaluate health of large irrigation districts. 【Method】We used 36 indexes to characterize each irrigation water-saving system based on the following aspects: environmental quality of the irrigation area, ecological resource of the irrigation area, socioeconomic effect, service management, and humanistic ecological environment. Screening narrowed the indexes to19 which represent 85.57 % of the information on effect of the irrigation system. Based on these indexes, we combined the analytic hierarchy process and the fuzzy comprehensive evaluation method to evaluate ecological service of the water-saving irrigation districts. The model was applied to Jiaokou Irrigation District in Shaanxi province, China. 【Result】The health of Jiaokou Irrigation district was moderate, and scores of the comprehensive evaluation index at excellent, good, moderate, fair and poor levels were 0.224, 0.169, 0.409, 0.159 and 0.039 respectively. For the six aspects used in the evaluation, the effect of environmental quality of irrigation area, ecological resources, and social and economic effects were all moderate level, while the service management system and the humanistic ecological environment were at excellent level. 【Conclusion】On average, the service management of Jiaokou Irrigation district is good though there is still room for improvement. The method and results presented in this paper can help to improve maintenance of water-saving irrigation districts and prolong their ecological service. |
| Key words: water-saving ecological irrigation district; fuzzy comprehensive evaluation; analysis hierarchical process; Jiaokou irrigation district |
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