基于遥感技术的泰山植被覆盖和岩性的关系研究

Study on the Relationship between Mt. Taishan Vegetation and Lithology Based on Remote Sensing Technology

以遥感影像为数据源,以实测的研究区地物的波谱曲线为依据,对TM影像进行了包括波段的选择、彩色合成、监督分类等一系列的处理。在此基础上确定了植被密度较大的区域的阈值,对NDVI植被指数图像进行滤波处理,提取出植被密度较大的区域的范围,并把它与岩性分布图进行叠加分析,得出不同岩性上的植被覆盖情况。结合岩石化学成分的资料,分析了可能的原因,指出了植被覆盖和岩性有密切的关系。

A series of problems including the selection of bands, color composition, supervision classification, etc. for the TM images are processed in the paper according to spectrum curves of objects in the research region and taking the remote images as data sources. Based on the result of supervision classification and field survey, the threshold value of the region with large vegetation density is given out and then the images of NDVI vegetation indices are processed with the method of wave filter. It finds out the area in which vegetation density is larger and then it is analyzed overlaid on the lithology distribution map, obtaining the vegetation conditions in different lithology areas. With the data of chemical components of rocks the reason that leads the difference is analyzed and that the vegetation cover has a close relation with lithology is pointed out.