基于3S技术的“后三峡时代”万州区生态敏感性评价研究

Study on Ecological Sensitivity Index in Wanzhou District of Three Gorges Reservoir Area Based on“3S" Technology

以重庆市万州区作为研究对象,以2016年TM遥感影像、环境监测公报数据、《统计年鉴》数据作为研究的基础数据,以"3S"作为技术支撑,运用层次分析评价法对万州区生态敏感性进行评价。结果表明:万州区平均生态敏感性(ESI)指数处于中等偏低水平,在空间分布上存在差异。生态一般敏感区主要分布在万州区的边界部分;轻度敏感区则相对均匀地分布在整个研究区且分布十分广泛;中度敏感区主要分布在万州区东南和西南的山麓;高度敏感区主要分布在万州区的高海拔山区并且呈带条状分布,是需要引起特别关注的区域。以此为三峡库区制定生态恢复和生态保护相关政策与措施提供参考。

Taking Wanzhou as the research object, using the landsat TM remote sensing data, environmental monitoring data, social and economic data of Wanzhou as the basic data source, under the support of 3S technology, the Wanzhou on the side of ecological sensitivity was evaluated with the method of analytic hierarchy process. The results showed：The average ecological sensitivity index（ESI） was in the middle or slightly low level, and there were differences in the spatial distribution in Wanzhou. The lighter sensitive area was mainly distributed in the por- tion of the boundary of the Wanzhou, the light sensitive area was relatively evenly distributed in the study area and was widely distributed, the moderate sensitive area was mainly distributed in the southeast and southwest foothills of the Wanzhou, and the high sensitive area was mainly distributed in high altitude mountain in Wanzhou with strip distribution, it needed special attention.