基于GIS的生态脆弱移民区生态环境质量评估——以宁夏红寺堡区为例

发布时间：2018-07-22 20:40

【摘要】：参考国家最新颁布的《生态环境评价规范》,从5个方面构建生态环境评价模型,利用GIS技术进行数据获取、运算及评价单元细化,以监测局部区域的具体生态环境问题并分析空间变化趋势,最后以宁夏红寺堡区为例探讨生态脆弱移民区的生态环境质量评价。结果表明:红寺堡区各乡镇生态环境状况一般,EI值存在明显区域差异和地带性,东南部优于中西部。太阳山镇生态环境状况最好,镇东南存在土地胁迫度和污染指数高的生态环境问题;南川乡和红寺堡镇次之,分别存在乡东南部水网密度低和镇中南土地胁迫高的问题;大河乡生态环境最差,西南地区存在植被覆盖度低、荒漠化等生态环境问题。
[Abstract]:Referring to the newly issued Eco-environmental Assessment Standard, the eco-environment evaluation model is constructed from five aspects, and the data acquisition, calculation and evaluation unit are refined by using GIS technology. Based on the monitoring of the specific ecological environment problems in local areas and the analysis of spatial trends, the ecological environment quality assessment of the ecological fragile migration areas in Hongsibao district of Ningxia was discussed in the end. The results showed that there were obvious regional differences and zonality in the ecological environment of the villages and towns in Hongsibao area, and the southeast was superior to the central and western regions. The ecological environment of Yangshan Town is the best, the ecological environment problems of high land stress and pollution index exist in the southeast of the town, and the problems of low water network density and high land stress in the central and southern town of Nanchuan Township and Hongsibao Township, respectively. The ecological environment of Dahe Township is the worst, and there are some ecological environmental problems such as low vegetation coverage and desertification in southwest China.
【作者单位】：宁夏大学资源环境学院;
【基金】：教育部人文社会科学研究青年基金项目(13YJCZH059) 宁夏大学研究生创新项目(GIP2015004)
【分类号】：X826;P208

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