基于加权叠加模型的高原湖泊流域重要生态用地识别——以星云湖流域为例

发布时间：2018-04-16 11:22

本文选题：重要生态用地 + GIS　；参考：《长江流域资源与环境》2017年08期

【摘要】：生态用地在维持区域生态平衡和保障区域生态安全具有重要意义。以云南星云湖流域为研究区,运用层次分析法和GIS技术,从水土保持、地质灾害规避与防护、生物多样性保护和水资源安全4个方面,构建了流域重要生态用地识别指标及其识别方法,并识别出流域重要生态用地空间分布。结果表明:(1)加权叠加模型更适用于高原湖泊流域重要生态用地识别;(2)根据生态用地重要性分为核心型、辅助型、过渡型和非重要生态用地,面积分别为75.98 km~2、105.05 km~2、89.47 km~2和65.11 km~2,分别占流域生态用地总面积的22.64%、31.30%、26.66%和19.40%。识别结果能较好地反映重要生态用地维护流域的生态安全。以星云湖流域作为高原湖泊流域的典型,为高原湖泊生态保护提供科学方向,以期协调流域经济发展与生态保护的矛盾,促进可持续发展。
[Abstract]:Ecological land use plays an important role in maintaining regional ecological balance and ensuring regional ecological security.Taking Xingyun Lake Basin in Yunnan Province as the research area, the paper applies analytic hierarchy process (AHP) and GIS technology, from four aspects: soil and water conservation, geological hazard avoidance and protection, biodiversity protection and water resources security.The identification index and identification method of important ecological land in watershed were constructed, and the spatial distribution of important ecological land in watershed was identified.The results show that the weighted superposition model is more suitable for the identification of important ecological land in plateau and lake basins. According to the importance of ecological land, it is classified as core type, auxiliary type, transitional type and non-important ecological land.The area is 75.98 km~2105.05 / m ~ (2) 89. 47 km~2 and 65.11 km / m ~ (2), accounting for 22.64 ~ 31.30 ~ 26.66% and 19.40% of the total ecological land area, respectively.The result of identification can reflect the ecological security of important ecological land.Taking Xingyun Lake Basin as the typical example of plateau lake basin, this paper provides a scientific direction for ecological protection of plateau lake, in order to coordinate the contradiction between economic development and ecological protection of the basin and promote sustainable development.
【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项目(KH100992)~~
【分类号】：F301.2;X171

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