基于RS、GIS的呼包鄂地区植被覆盖度变化研究 Research on Dynamic Change of Vegetation Coverage in Hohhot, Baotou, Ordos Area Based on RS and GIS

Abstract

本文以呼包鄂地区为研究区，以MODIS的NDVI数据16日最大合成法合成的MYD13Q1产品为数据源，借助ENVI、ArcGIS平台，对研究区的10年植被覆盖度进行了动态变化研究。其中首先计算了2003、2005、2007、2009、2011、2013年植被覆盖度，其次计算10年平均植被覆盖度，最后分析了2003年至2013年植被覆盖度转移，从而得出的结论是呼包鄂地区中部植被覆盖度较高，南北较低。2003~2009年呼包鄂地区植被覆盖度有浮动，2009~2013年呼包鄂地区植被覆盖度有改善趋势。呼包鄂地区植被覆盖度有整体退化、局部改善的现象，因此对于生态环境必须多加治理才能趋于良好。 Taking the Hohhot-Baotou-Ordos district as the study area, with the data source—MYD13Q1 products as a result of 16-day maximum synthesis method of MODIS NDVI data, with the help of ENVI and ArcGIS platform, this paper studied the vegetation coverage in this district in 10 years. At first, we made the calculation of vegetation coverage in 2003, 2005, 2007, 2009, 2011 and 2013, then got the average value of vegetation coverage of 10 years, and finally analyzed the vegetation coverage transfer in 2003-2013, which concluded that the vegetation coverage in central region of the Hohhot-Baotou-Ordos district is higher, and the north and the south are low. In 2003-2009, the vegetation coverage of the Hohhot-Baotou-Ordos district was floating, and in 2009-2013, the vegetation coverage had an improved trend. The vegetation coverage in the Hohhot-Baotou-Ordos district has overall degradation and local improvement, so the ecological environment needs more management to get better.