基于遥感技术的三峡库区屏障带划分研究——以重庆市万州区为例

Study on the Barrier Zones Division of Three Gorges Reservoir Area Based on Remote Sensing

采用遥感技术和GIS空间分析相结合的方法,利用三期Landsat TM影像数据对重庆市万州区的地表亮温、地表湿度以及山脊线等特征对比分析,模拟其变化趋势和范围,通过多层数据叠加分析,划定出该区域的生态环境屏障带。结果表明,研究区中三峡水利工程对其生态环境影响有扩大的趋势;结合自然等综合因素,划定生态屏障带约为484.44 km2。研究结果有助于库区生态环境评价以及土地利用规划编制。

The paper combines the method of remote sensing and GIS spatial analysis,and is based on the three Landsat TM images to have a comparative character analysis of surface brightness temperature,surface humidity,and the ridge line for Chongqing Wanzhou,at last simulate the trends and scope of them.By composition analysis of multi-layer data,decide the delineation of the region's ecological environment barrier.The result shows that Three Gorges water conservancy project in the studied area has a growing impact on its natural environment.Considering with natural factors,we designate the ecological barrier with about 484.44 km2.The findings will provide a data reference for ecological environmental assessment and land use planning for the reservoir area.