| 摘要: |
| 根据泾惠渠灌区水文生态现状和存在的主要问题，构建了由3层16项指标组成的综合评价指标体系；基于层次分析法进行了指标权重分配，确定了评价标准和两级模糊综合评判法，并以泾惠渠灌区2000年的具体指标值为例，进行了实例验证。结果表明，水文气象要素和生态环境要素的质量都为中等水平，两者对中等级别的隶属度分别为36.7%和42.3%；而社会经济要素的质量相对较差，对很差级别的隶属度高达61.1%。总体来说该灌区2000年的水文生态系统质量处于中等水平。评价结果与实际情况基本相符，说明层次分析法和两级模糊综合评判法在半干旱地区大型灌区水文生态系统质量综合评价中具有一定的应用价值。 |
| 关键词: 水文生态系统 半干旱地区 泾惠渠灌区 综合评价 |
| DOI： |
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| 基金项目:国家外国专家局、教育部高等学校学科创新引智计划(‘111’)项目“干旱半干旱地区水文生态与水安全研究”(B08039)；国家自然科学基金项目(51009008) |
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| Comprehensive evaluation on quality of hydrological ecosystems in large-scale irrigation district in semi-arid region——A case study of Jinghuiqu Irrigation District, Shaanxi Province |
| QIAO Chang-lu1,2 |
| () |
| Abstract: |
| According to the current hydrological ecological conditions and existing major problems in Jinghuiqu Irrigation District, a comprehensive evaluation index system consisted of three hierarchies and 16 individual indexes was established. The weights for each evaluation index were allotted based on the analytic hierarchy process (AHP) and confirmed the evaluation criteria and two-level fuzzy comprehensive evaluation method. Taking the specific indexes of Jinghuiqu Irrigation District in 2000, was carried out the real example for validation.The evaluation results showed that the quality of hydrological meteorological elements and eco-environment elements was the medium level; the mem
berships of medium level for both were 36.7% and 42.3%, respectively. At the same time, the social-economic element was relatively very poor and its membership to the very poor level was high as 61.1%. Overall, the quality of hydrological ecosystems of Jinghuiqu Irrigation District in 2000 was a medium level. This evaluation result was matched well with the real situation. It was explained that the analytic hierarchy process and two-level fuzzy comprehensive evaluation method had a certain application value for the comprehensive evaluation of quality of hydrological ecosystem in large-scale irrigation district in semi-arid region. |
| Key words: hydrological ecosystem semi-arid region Jinghuiqu Irrigation District comprehensive evaluation |
