%0 Dataset
%T China 1:250000 DEM database
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/ced9391c-2f5c-41b2-a9bd-46a596988d43
%W NCDC
%K landforms;DEM;contour;land cover;a bathymetric contour;China;Water depth point;river system;District;Elevation point;whole country
%X 1: The 250000 DEM database is based on some data layers of the national 1:250000 database, mainly including contour line, elevation point, contour line, water depth point, water system and other elements. It adopts 1980 Xi'an coordinate system, 1985 National elevation datum and arc / info The coverage format is stored in layers, including 816 pieces of data of 1:250000 topographic maps. The longitude difference of each map is 1.5 degrees, and the latitude difference is 1 degree, covering the whole territory. The current situation of the data content is as low as the end of 2000, and some data is better, reaching 2002.