This data is based on the DEM data generated by 1:250,000 digital contour lines and elevation points in China released by national basic geographic information center, and the DEM data set of heihe river basin is generated by the nearest neighbor method resampling method of ARCGIS spatial analysis module with a spatial resolution of 30 SEC.
File name: the data is stored in GRID format. The files are divided into Albers and geographic folders. The file names are "dem30secalb" and "dem30secgeo".</p><p>Data reading: Arcgis, Qgis and other remote sensing software can be used to open the reading, in the form of images.
Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.
1.Li Xin, Cheng Guodong, Wu Lizong. Digital Heihe River Basin. 1 ： An Information Infrastructure for the Watershed Science. Advances in Earth Science, 2010, 25(3): 297-305. (View Details )
2.LI Xin, WU Lizong, MA Mingguo, GE Yingchun, RAN Youhua, WANG Liangxu, NAN Zhuotong （ Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China） (View Details )
3.Li X, Nan ZT, Cheng GD, Ding YJ, Wu LZ, Wang LX, Wang J, Ran YH, Li HX, Pan XD, Zhu ZM. (2011). Toward an improved data stewardship and service for environmental and ecological science data in west China. International Journal of Digital Earth, 4(4): 347-359. DOI: 10.1080/17538947.2011.558123. (View Details |Download)
4.Li, Z. , Xu, Z. , Shao, Q. , & Yang, J. . (2009). Parameter estimation and uncertainty analysis of swat model in upper reaches of the heihe river basin. Hydrological Processes, 23(19), 2744-2753. (View Details )
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Resource Provider： National Basic Geographic Information Center