1:4 million map of the Glaciers, Frozen Ground and Deserts in China (2006)


The compilation basis of frozen soil map includes: (1) frozen soil field survey, exploration and measurement data; (2) aerial photo and satellite image interpretation; (3) topo300 1km resolution ground elevation data; (4) temperature and ground temperature data. Among them, the distribution of permafrost in the Qinghai Tibet Plateau adopts the research results of nanzhuo Tong et al. (2002). Using the measured annual average ground temperature data of 76 boreholes along the Qinghai Tibet highway, regression statistical analysis is carried out to obtain the relationship between the annual average ground temperature and latitude, elevation, and based on this relationship, combined with the gtopo30 elevation data (developed under the leadership of the center for earth resources observation and science and technology, USGS) Global 1 km DEM data) to simulate the annual mean ground temperature distribution over the whole Tibetan Plateau. Taking the annual average ground temperature of 0.5 ℃ as the boundary between permafrost and seasonal permafrost, the boundary between discontinuous Permafrost on the plateau and island Permafrost on the plateau is delimited by referring to the map of ice and snow permafrost in China (1:4 million) (Shi Yafeng et al., 1988); in addition, the division map of Permafrost on the big and small Xing'an Mountains in the Northeast (Guo Dongxin et al., 1981), the distribution map of permafrost and underground ice around the Arctic (b According to rown et al. 1997) and the latest field survey data, the Permafrost Boundary in Northeast China has been revised; the Permafrost Boundary in Northwest mountains mostly uses the boundary defined in the map of ice and snow permafrost in China (1:4 million) (Shi Yafeng et al., 1988).

According to the data, the area of permafrost in China is about 1.75 × 106km2, accounting for about 18.25% of China's territory. Among them, alpine permafrost is 0.29 × 106km2, accounting for about 3.03% of China's territory.

For more information, please refer to the specification of "1:4 million map of glacial and frozen deserts in China" (Institute of environment and Engineering in cold and dry areas, Chinese Academy of Sciences, 2006)


Data file naming and use method

The data is stored in MDB database format and can be opened and viewed by ArcGIS and other related software.


Required Data Citation View Data Cite Help About Data Citation
Cite as:

WU Lizong, WANG Tao. 1:4 million map of the Glaciers, Frozen Ground and Deserts in China (2006). A Big Earth Data Platform for Three Poles, 2013. doi: 10.3972/westdc.015.2013.db. (Download the reference: RIS | Bibtex )

Related Literatures:

1. Wang, T. (2006). 1:4 000 000 Map of the Glaciers, Frozen Ground and Deserts in China. Beijing, Science Press.( View Details | Bibtex)

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


User Limit

To respect the intellectual property rights, protect the rights of data authors, expand services of the data center, and evaluate the application potential of data, data users should clearly indicate the source of the data and the author of the data in the research results generated by using the data (including published papers, articles, data products, and unpublished research reports, data products and other results). For re-posting (second or multiple releases) data, the author must also indicate the source of the original data.


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


Related Resources
Comment

Sign In to add comments

Download Follow
Keywords
Geographic coverage
East: 135.50 West: 73.20
South: 17.80 North: 53.90
Detail
  • Temporal resolution: Yearly
  • Spatial resolution: 10m - 100m
  • File size: 36 MB
  • Browse count: 3,488 Times
  • Apply count: 8 Times
  • Share mode: offline
  • Temporal coverage: 2006-01-01 To 2006-12-31
  • Updated time:
Contact Information
: WU Lizong   WANG Tao  

Distributor: A Big Earth Data Platform for Three Poles

Email: poles@itpcas.ac.cn

Export metadata