%0 Dataset %T 1:700000 land cover data set in Alxa League of Inner Mongolia in 1990 %J National Cryosphere Desert Data Center %I National Cryosphere Desert Data Center(www.ncdc.ac.cn) %U http://www.ncdc.ac.cn/portal/metadata/f8ad9654-f059-4fa3-8ce0-828a0c6a66b0 %W NCDC %R 10.12072/ncdc.NIEER.db0080.2020 %A YanChangzhen %A XieJiali %K Land use;land cover;basic geography %X The data set is 1:700000 land cover data of Alxa League in Northwest China, 1990. This data adopts a hierarchical land cover classification system. The first class of the classification system is consistent with the IPCC system, with a total of 6 categories (woodland, grassland, wetland, cultivated land, artificial surface, others), and the second class uses 38 types with global unified code generated by the LCCs of FAO.