%0 Dataset
%T Gansu Province Topographic Factor Dataset (2009)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/bb2bff61-2339-4a01-8d02-e607be580f8e
%W NCDC
%R 10.12072/ncdc.gseer.db3977.2023
%A Zhang Yaonan
%K Gansu Province;terrain factors;micro terrain factors;macro terrain factors
%X Terrain factors can represent the basic characteristics of the terrain surface, but it is difficult to accurately and specifically express the features of the terrain using a single terrain factor. Therefore, various terrain factors can be comprehensively considered to describe the undulating changes of the terrain surface to a certain extent, which has a good effect.  The data source used is DEM. From Geospatial Data Cloud（ http://www.gscloud.cn/search ）Obtain, concatenate multiple DEMs, crop the DEMs using the vector boundaries of Gansu Province, and finally obtain the DEM data of Gansu Province.  This dataset contains two types of terrain factors: micro terrain factors and macro terrain factors. Micro terrain factors include slope, aspect, slope variation rate, aspect variation rate, plane curvature, profile curvature, comprehensive curvature, etc; There are a total of 11 macro terrain factors, including terrain roughness, terrain undulation, elevation variation coefficient, and surface cutting depth. The spatial resolution of the data is 30 meters, the data is in raster format, and the coordinate system is WGS84.