| 榆林市水资源承载力空间分异 |
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| 引用本文： | 郝小宇,张鑫,雍志勤.榆林市水资源承载力空间分异[J].排灌机械工程学报,2019,37(12):1037-1043. |
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| 作者姓名： | 郝小宇 张鑫 雍志勤 |
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| 作者单位： | 西北农林科技大学水利与建筑工程学院, 陕西 杨凌 712100 |
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| 摘 要： | 以榆林市为研究对象,选取19个评价指标,利用因子分析法与熵值法综合定权,将指标体系分为水资源、社会、经济、生态4个子系统,构建模糊综合评价模型.对榆林市2015年各县的水资源承载力进行综合评价,并与聚类分析的分类结果进行对比.评价结果显示:榆林市2015年各县区的水资源承载力综合得分为0.4~0.6,府谷和神木处于理想可承载区;榆阳、靖边、定边处于水资源可承载区,表明水资源供需基本达到稳定;横山县处于水资源轻度超载区;绥德、米脂、佳县、吴堡、清涧和子洲属于水资源重度超载区.聚类分析的分类结果与综合评价结果基本一致.整体上,南部六县水资源承载力普遍较北部六区县差.就各个子系统而言,经济子系统与生态子系统空间差异性明显.评价结果可为今后榆林市各区县水资源规划与可持续开发利用提供参考.
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| 关 键 词： | 因子分析法 熵值法 模糊综合评价 水资源承载力 聚类分析 |
| 收稿时间： | 2018-01-13 |
Spatial differences of water resources carrying capacity in Yulin City |
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| HAO Xiaoyu,ZHANG Xin,YONG Zhiqin.Spatial differences of water resources carrying capacity in Yulin City[J].Journal of Drainage and Irrigation Machinery Engineering,2019,37(12):1037-1043. |
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| Authors: | HAO Xiaoyu ZHANG Xin YONG Zhiqin |
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| Institution: | 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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| Keywords: | component analysis entropy method fuzzy comprehensive evaluation water resources carrying capacity cluster analysis |
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