基于遥感与GIS的青藏高原典型电网工程生态环境敏感性分析

发布时间：2018-03-17 22:00

本文选题：遥感　切入点：GIS　出处：《中国环境科学》2017年08期 　论文类型：期刊论文

【摘要】：为了评估电网工程对生态环境的影响,以概念图的形式确定并表达了电网工程特定活动直接或间接作用于复杂自然环境带来的生态环境影响,基于RS与GIS技术,构建并定量化了敏感性评价指标体系,运用空间主成分方法对青藏高原典型电网工程开展应用.结果显示:研究区的总体生态环境敏感程度很高且集聚效应显著,重度和极度敏感区集中分布(高-高空间关联模式)在研究区中部的雅鲁藏布大峡谷和东南部的高山河谷地带.依据生态环境敏感程度分布状况形成的电网工程极度敏感标段,重度敏感标段,中度敏感标段和轻度敏感标段应利用不同自然条件采取相应的措施降低工程对生态环境的影响.该方法可为复杂自然条件下其他大型工程建设的生态环境影响评价提供借鉴.
[Abstract]:In order to evaluate the impact of power grid engineering on the ecological environment, the ecological impact of specific activities of power grid engineering on the complex natural environment is determined and expressed in the form of concept diagram. Based on RS and GIS technology, the impact of specific activities of power grid engineering on the ecological environment is determined and expressed. The sensitivity evaluation index system is constructed and quantified, and the spatial principal component method is applied to typical power grid projects in the Qinghai-Tibet Plateau. The results show that the overall ecological environment sensitivity of the study area is very high and the agglomeration effect is significant. The concentrated distribution of severe and extremely sensitive areas (high-high spatial correlation model) in the Yalu Zangbo Grand Canyon in the central part of the study area and the alpine valley in the southeast of the study area. Highly sensitive segment, The medium sensitive segment and the light sensitive segment should take appropriate measures to reduce the impact of the project on the ecological environment by using different natural conditions. This method can be used as a reference for the ecological environmental impact assessment of other large-scale projects under complex natural conditions.
【作者单位】：贵州大学林学院;中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室;国家电网公司西南分部;中国科学院青藏高原地球科学卓越创新中心;中国科学院大学;
【基金】：国家电网公司西南分部科技项目中国科学院战略性先导科技专项(XDA05050404-3);中国科学院国际合作局对外合作重点项目(131C11KYSB20160061)
【分类号】：X82

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