新巴尔虎右旗植被覆盖变化研究

利用ArcGIS和ENVI的栅格空间分析工具,采用叠置分析、线性趋势分析法、均值法等分析方法,选用2001~2016年每年5~9月MODIS NDVI数据和该研究区域行政区划矢量数据来研究新巴尔虎右旗16年间的植被覆盖变化,为该地区植被趋势研究和生态建设提供一定的科学依据。结果表明:2001~2016年间新巴尔虎右旗生长季NDVI值呈增长趋势,但存在空间差异性,并且在不同时间段的具体表现不同;新巴尔虎右旗植被覆盖度呈增长趋势的面积占比,远大于植被覆盖度呈减小趋势的面积占比。

Study on the Vegetation Cover Change in Xin Barag Right Banner

By using ArcGIS and ENVI raster spatial analysis tools and the superimposed analysis,linear trend analysis,analysis methods,average method,MODIS NDVI data and vector data of administrative divisions in the study area from May to September every year from 2001 to 2016 were used to study the vegetation cover changes in Xin Barag Right Banner during the past 16 years,some scientific basis for the study of vegetation trend and ecological construction in this area were provided.The results showed that the NDVI value in the growing season of Xin Barag Right Banner showed an increasing trend from 2001 to 2016,but there were spatial differences;the area proportion of vegetation coverage with an increasing trend wasmuch larger than that with a decreasing trend in Xin Barag Right Banner.