The data set is the first 1:100000 desert spatial database in China, which is based on the graph data of desert thematic map. It mainly reflects the geographical distribution, area size, mobility and fixation degree of deserts in China. According to the system design requirements and relevant standards, the input data shall be standardized and converted into the standard format of all kinds of data input. Build the database to deliver the system to run.

In this project, TM image in 2000 is used as the information source to interpret, extract and edit the coverage and 2000 TM digital image information of the national land use status map. In combination with remote sensing and geographic information system technology, and according to the mapping requirements of 1:100000 scale thematic map, thematic mapping of sand, sand and Gravel Gobi in China is carried out. The 1:100000 national desert map can save a lot of data input and editing when users are engaged in the research of resources and environment. Digital map can be easily transformed into layout map

The dataset properties are as follows:

There are two folders: E00 and SHP

Comparison table of desert map names and provinces in the folder

01 ahsm Anhui Province

02 BJSM Beijing

03 fjsm Fujian Province

04 gdsm Guangdong Province

05 GSSM Gansu Province

06 gxsm Guangxi Zhuang Autonomous Region

07 gzsm Guizhou Province

08 hebsm Hebei Province

09 hensm Henan Province

10 hljsm Heilongjiang Province

11 hndsm Hainan Province

12 hubsm Hubei Province

13 jlsm Jilin Province

14 JSSM Jiangsu Province

15 jxsm Jiangxi Province

16 lnsm Liaoning Province

17 nmsm Inner Mongolia Autonomous Region

18 nxsm Ningxia Hui Autonomous Region

19 qhsm Qinghai Province

20 SCSM Sichuan Province

21 SDSM Shandong Province

22 sxsm Shaanxi Province

23 tjsm Tianjin

24 twsm Taiwan

25 xjsm Xinjiang Uygur Autonomous Region

26 xzsm Tibet Autonomous Region

27 zjsm Zhejiang Province

28 shxsm Shanxi Province

1. Data projection:

Projection: Albers

False_Easting: 0.000000

False_Northing: 0.000000

Central_Meridian: 105.000000

Standard_Parallel_1: 25.000000

Standard_Parallel_2: 47.000000

Latitude_Of_Origin: 0.000000

Linear Unit: Meter (1.000000)

2. Data property sheet: Area

Perimeter (perimeter)

Ashm

Class (desert code)

Ashm? ID (desert code)

3. Desert Code: mobile sand 2341010

Semi mobile sand 2341020

Semi fixed sand 2341030

Gobi 234200

Saline alkali land 2343000

4: File format: the data types of national, provincial and county-level desert map are vector ShapeFile and E00

5: File naming: Based on the data organization of the national basic resources and environment remote sensing dynamic information service system, it is carried out at the file management level of Windows NT. The file and directory names adopt the compound names of English words and numbers. The provincial desert map is composed of the provincial and district name Pinyin + SM. For example, the desert distribution map of Gansu Province is GSSM. The desert map of flag and county is the Pinyin of province name + XXXX, XXXX is the last four digits of the code of flag and county, for example, the desert map of Lanzhou is named gs0101. The segmentation of provinces, districts, banners and counties is based on the administrative division data files in the national basic resources and environment remote sensing dynamic information service operation system.