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.
2000 TM image
Based on the coverage of the national land use map and the 2000 TM digital image information, this paper interprets, extracts and revises the map, and uses remote sensing and GIS technology to map the deserts, deserts and Gravel Gobi in China at a scale of 1:100000
Data set quality control through strict manual audit
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.ncdc.Westdc.2020.676
10.12072/ncdc.Westdc.db0027.2021
