1. The data is digitized in the map of the development degree of desertification in daqintara (1958) from the drawing. The specific information of the map is as follows:
* chief editor: zhu zhenda, qiu xingmin * editor: wang yimou
* drawing: feng yu-sun, yao fa-fen, wu wei, wang jianhua, wang zhou-long
* cartographic unit: desert laboratory, Chinese academy of sciences
* publishing house: xi 'an map publishing house, unified isbn: 12461.26
二. The data is stored in ESRI Shapefile format, including the following layers:
1, * desertification development degree map (1958) : desertification1958.shp 2, * double river: river_double-shp 3, * single river: river_single-shp 4, Road: SHP 5, Lake: lake.shp 6, street: Stree. SHP 7, Railway: Railway. SHP 8, forest belt: Tree_networks 9. Residential land: residential. SHP 10. Map: map_margin.shp
三, desertification development degree figure property fields and encoding attribute: (1) desertification degree (Type) : a flow of sand (Semi - shifting Sandy Land), sand form class (Shapes), grass (Grassland), forest Land, Woodland and forest density (W_density), the cultivated Land (Farmland)
(2) sand Shapes: Barchan Dunes, Flat Sandy Land, undulated Sandy Land, Vegetated Dunes
(3) the grass (Grassland)
(4) Woodland: Woodland.
(5) woodland density (W_density): Sparse Woodlot
(6) Farmland: Dryfarming and Abandoned Farmland, Irrigated Fields