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1) The data is the layout of sample survey units in 65 countries of Pan-Third Polar region and western China. 2)Sample survey units were set in the pan-third pole region (70 °N-10 °S, 180 °E-180 ° W) . No samplings points were selected in the region with latitude >70 °. In the region wiht latitude of 60 ° -70 ° , sample survey units were selected in cells of 0.5 ° latitude ×1 ° Longitude (about 55km×55km-55km×38km). In the area with latitude of 40°-60°, sample survey units were selected in cells of 0.5 ° latitude×0.75 ° longitude (about 55km×63km-55km×42km). In the area with latitude <40°, sample survey units were selected in cells of 0.5 ° latitude × 0.5 ° longitude. In the Qinghai-Tibet Plateau, sample survey units were selected in cells of 0.25 ° latitude × 0.25 ° longitude. Thesample survey units deployed in the first national water conservancy survey for soil and water conservation were used in current project in five provinces including Xinjiang, Qinghai, Gansu, Sichuan and Yunnan in western China. The total number of sample survey units is 29,651, of which, 4052 are in the Qinghai-Tibet Plateau, 8771 in the western China, and 16,828 in countries outside of China. 3) The selected sample survey units is well distributed and the data quality is good.4) the layout map of sample survey units is of great significance for the study of soil erosion in Pan third polar region, and it is also crucial for the implementation of the development policy of the area along the Silk Road Economic Belt and the 21st-Century Maritime Silk Road.

File naming and required software

XDA200402021-BND65 represents the sample survey units of 65 countries in Pan-Third Polar region, XDA200402021-CHINAWEST represents the sample survey units of western China, of which, XDA20040202 is the subproject number, 1 is the group number of the subproject, BND65 represents the 65 countries in Pan-Third Polar region, CHINAWEST represents the west of China. Shapefile format. It can be viewed and analyzed using ArcGIS

Data Citations Data citation guideline What's data citation?

Wei, X. (2019). Layout of sample survey units in Pan-Third Polar region (2018). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Soil.tpdc.270245. CSTR: 18406.11.Soil.tpdc.270245. (Download the reference： RIS | Bibtex )

1. Liu, B.Y., Guo, S.Y., Li, Z.G., Xie, Y., Zhang, K.L., Liu, X.C., (2013). Sampling program of water erosion inventory of China. Science of Soil and Water Conservation, 10(1), 77-81.( View Details | Bibtex)

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.

Support Program

Pan-Third Pole Environment Study for a Green Silk Road-A CAS Strategic Priority A Program (No:XDA20000000)

Copyright & License

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License： This work is licensed under an Attribution 4.0 International (CC BY 4.0)

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