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

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。

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

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.