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土壤侵蚀监测作为水土保持研究的重点课题,而GIS和RS技术的结合又可以对土壤侵蚀分布与强度的动态变化进行快速监测.本文以香格里拉市为研究区域,利用Landsat TM(1989、1999年)、ETM+(2003年)及Landsat OLI(2013年)四期遥感数据,参照国家水利部颁布的《土壤侵蚀分类分级标准》,针对香格里拉的土壤侵蚀状况进行动态监测研究.结果表明:1989—2013年,香格里拉土壤侵蚀面积逐年在增加,但总体增幅不大,其中轻度侵蚀占侵蚀类型比例较大;中度、强烈、极强、剧烈侵蚀面积、比例依次递减,且随着人类生产活动加剧及时间的进程,香格里拉2013土壤侵蚀最为严重,土壤侵蚀整体侵蚀状况不容乐观,建议采取相应措施加强水土保持防治及土壤保护工作.
Soil erosion monitoring is a key issue in soil and water conservation research, and the combination of GIS and RS techniques can quickly monitor the dynamic changes of soil erosion distribution and intensity.Taking Shangri-La as the research area, Landsat TM (1989, 1999) , ETM + (2003) and Landsat OLI (2013), and according to the Soil Erosion Classification Grading Standard promulgated by the Ministry of Water Resources, the dynamic monitoring of the soil erosion in Shangri-La was carried out. The results show that from 1989 to 2013 , Shangrila soil erosion area increased year by year, but the overall increase is not large, of which mild erosion accounted for a larger proportion of the type of erosion; moderate, strong, extremely intense erosion area, the proportion of decreasing order, and with the intensification of human production activities and As time progresses, the soil erosion in Shangri-La is the most serious in 2013, and the overall erosion status of soil erosion is not optimistic. We suggest that measures be taken to strengthen soil and water conservation and soil conservation.