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| Spatial differences of water resources carrying capacity in Yulin City |
| HAO Xiaoyu, ZHANG Xin*, YONG Zhiqin |
| College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100, China |
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Abstract Taking Yulin City as the study object were selected 19 evaluation indexes that were weighted by component analysis and entropy method, divided the comprehensive index system into four subsystems of water resources, society, economy and ecology, and constructed the fuzzy comprehensive eva-luation model. There by the water resources carrying capacity of all counties and districts in Yulin in 2015 was evaluated comprehensively. The evaluation results show that the water resources carrying capacity of all counties and districts in Yulin City is between 0.4 and 0.6 in 2015, and Fugu and Shenmu are in ideal load bearing areas. Yuyang, Jingbian and Dingbian are in water resources bearing areas, indicating that supply and demand of water resources have basically reached a stable level. Hengshan County is in a slightly overloaded area of water resources. Suide, Mizhi, Jiaxian, Wubao, Qingjian and Zizhou belong to severe overloading areas of water resources. The results of cluster analysis are basically consistent with those of comprehensive evaluation. Overall, the water resources carrying capacity of the six southern counties is generally worse than that of the six northern counties. As far as the subsystems are concerned, the spatial difference between economic subsystem and ecological subsystem is obvious. The evaluation results will provide reference for the plan of future and the sustainable deve-lopment and utilization of water resources in all counties in Yulin City.
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Received: 13 January 2018
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