基于GIS的星云湖流域生态敏感性评价

发布时间：2018-05-02 11:43

本文选题：生态敏感性 + GIS　；参考：《水土保持研究》2017年05期

【摘要】：基于GIS技术,根据星云湖流域主要生态问题选取6个因子,采用多因子加权求和模型对星云湖流域生态敏感性及其空间分布进行了评价分析,并按生态敏感性评价值将研究区划分为高度敏感区、中度敏感区、低度敏感区和不敏感区4个等级。结果表明:研究区高度敏感、中度敏感、低度敏感和非敏感区域面积分别为104.08km~2,124.52km~2,102.78km~2,39.30km~2;中度及以上敏感区面积约为228.60km~2,占流域总面积的61.67%,生态敏感性总体较高,空间上主要分布在江城镇、星云湖及其湖滨和雄关乡等;建议将高度敏感区划定为生态保护区加以重点保护,中度敏感区划定为控制发展区,低度敏感区和非敏感区为适宜发展区。评价结果能较好地反映流域综合生态敏感性空间分布特征,可作为流域土地资源开发建设和环境规划与保护的依据,并为高原湖泊流域开展类似研究提供参考。
[Abstract]:Based on GIS technology, six factors were selected according to the main ecological problems in Xingyun Lake basin, and the multi-factor weighted summation model was used to evaluate the ecological sensitivity and spatial distribution of Xingyun Lake basin. According to the evaluation value of ecological sensitivity, the study area was divided into four grades: high sensitive area, moderate sensitive area, low sensitive area and insensitive area. The results showed that the area of high sensitivity, moderate sensitivity, low sensitivity and non-sensitive area were 104.08 kmg ~ 2124.52 km ~ (-1) 2102.78 km ~ (2) ~ (2) ~ 39.30 km ~ (2), and the area of middle and above sensitive area was about 228.60 km ~ (2), accounting for 61.67 km / m of the total area of the river basin, the ecological sensitivity was high in general, and the main spatial distribution was in town and town of the river. It is suggested that the highly sensitive zonation should be designated as the ecological protection area, the moderate sensitive area should be designated as the control development area, and the low sensitive area and the non-sensitive area should be considered as the suitable development area. The evaluation results can well reflect the spatial distribution characteristics of the comprehensive ecological sensitivity of the watershed, which can be used as the basis for the development and construction of land resources and environmental planning and protection in the watershed, and provide a reference for the similar research in the plateau lake basin.
【作者单位】：云南大学资源环境与地球科学学院;云南省高原湖泊流域污染过程与管理重点实验室;
【基金】：云南省高原湖泊流域污染过程与管理重点实验室开放基金资助项目“高原湖泊流域关键生态用地识别技术及空间优化研究”(KH100992)
【分类号】：P208;X826

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