宁夏盐池县地表覆盖时空监测分析

Spatial Monitoring of Surface Cover in Ningxia, Yanchi

搜集并整理了宁夏盐池县2008—2015年正射影像数据及矢量数据,对其地表覆盖进行了时间和空间变化分析。结果表明,盐池县耕地逐年减少,净减218.74 km^2;草地与林地逐年增加,草地净增99.13 km^2,林地净增66.07 km^2;园地变化不明显,园地净增3.51 km^2;2008—2015年期间盐池县地表覆盖总面积净减50.03 km2。

The orthophoto data and vector data from 2008 to 2015 in Yanchi County of Ningxia were collected and sorted,and the temporal and spatial changes of land cover were analyzed.The results show that,the cultivated land in Yanchi County decreased year by year,with a net decrease of 218.74 km^2.Grassland and woodland increased year by year,with a net increase of 99.13 km^2.The net increase of forest land was 66.07 km^2.The change of garden land was not obvious.The net increase of garden land was 3.51 km^2.The total land cover area decrease was 50.03 km2 during 2008—2015.