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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (11): 168-172.doi: 10.11924/j.issn.1000-6850.2012-2360

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

基于向量模法的西安市水环境承载力研究

耿雅妮   

  • 收稿日期:2012-07-02 修回日期:2012-07-31 出版日期:2013-04-15 发布日期:2013-04-15

Water Environmental Carrying Capacity in Xi’an City Based on Vector Norm Method

  • Received:2012-07-02 Revised:2012-07-31 Online:2013-04-15 Published:2013-04-15

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摘要： 为了深入掌握西安市目前的水资源状况，为促进当地的经济、社会发展和水资源保护协调发展提供科学的指导。根据西安市水环境特征和水环境承载力评价指标的选取原则，确定了西安市水环境承载力评价指标。根据水环境承载力影响因素的特征，应用层次分析法构建了各评价因素的3层结构模型，并计算确定了各评价指标的权重。将向量模法与层次分析法相结合，对西安市水环境承载力现状进行评价。结果表明，2004—2010年间西安市水环境承载力状况有逐年改善的趋势，评价值由0.035升至0.083，但是增长速度缓慢，每年的增长幅度只有0.01。西安市的水资源现状正在逐年改善，但是速度缓慢。

关键词: 异土木香内酯, 异土木香内酯

Abstract: In order to grasp the current status of water resources and provide the scientific guidance for the coordinated development of the economy, social and water conservation in Xi’an. Evaluation index of water environmental carrying capacity was determined in Xi’an City, depending on characteristics of the water environment in Xi’an City and selection principles of water environment carrying capacity evaluation index. Based on characteristics of water environment carrying capacity factors, three-layer structure model of evaluation factors were established and the weight of each index was calculated using analytic hierarchy process. Finally, status of water environmental carrying capacity was assessed, based on vector norm method and analytic hierarchy process. The results showed that water environmental carrying capacity was gradually improving and the valuation value rose from 0.035 to 0.083 in Xi’an City from 2004 to 2010, but the improvement was slow, annual growth rate was only 0.01. Present situation of water resources is improving year by year in Xi’an, but is very slow.

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