| Assessment of water resources carrying capacity in Yulin based on principal component analysis |
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| DOI：10.7606/j.issn.1000-7601.2012.04.39 |
| Key Words: water resources carrying capacity principal component analysis comprehensive assessment Yulin |
| Author Name | Affiliation | | XIAO Yingying | Key Laboratory for Northwest Water Resources and Ecological Environment of Ministry of Education, Xi'an University of Technology, Xi'an, Shaanxi 710048, China | | SONG Xiaoyu | Key Laboratory for Northwest Water Resources and Ecological Environment of Ministry of Education, Xi'an University of Technology, Xi'an, Shaanxi 710048, China | | ZHANG Jianlong | Key Laboratory for Northwest Water Resources and Ecological Environment of Ministry of Education, Xi'an University of Technology, Xi'an, Shaanxi 710048, China |
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| Abstract: |
| This paper established an evaluation index system with nine indicators, such as water quantity per capita, water resources development and utilization level, COD concentration, per capita grain possession, wate
r consumption per capita, natural growth rate of population, per capita GDP, water-use efficiency and environmental water use rate. A comprehensive evaluation of water resources carrying capacity in Yulin was carried out by principal component analysis, through which four principal components were given. The results show that: water resources carrying capacity is in unbalanced distribution in Yulin and the comprehensive evaluation value is different. The comprehensive evaluation values of Hengshan, Dingbian, Fugu, Yuyang and Shenmu are between 1 365.12 and 10 447.86, which are in the middle level. Water resources carrying capacity is limited in Jingbian and its comprehensive evaluation value is 10 468.962 (>10 447.86), which is slightly larger than Grade Ⅰ standard. In other divisions,
such as Zizhou, Jiaxian, Qingjian, Suide, Mizhi and Wubu, they have a great exploitation potentiality and their evaluating values are lower than 1 365.12, the Grade Ⅲ standard. At last countermeasures are proposed to improve the water resources carrying capacity, which have important practical significance for optimizing water resources allocation and promoting sustainable development of the social economy in Yulin. |
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