Frozen ground map of China based on a Map of the Glaciers, Frozen Ground and Deserts in China (1981-2006)


These data are a digitization of the frozen soil distribution map of the Map of the Glaciers, Frozen Ground and Deserts in China (1:4,000,000). Considering the unification with the global frozen soil classification system, the permafrost is divided into the following five types:

(1) Discontinuous permafrost: continuous coefficient 50%-90%

(2) Island permafrost: continuous coefficient <50%

(3) Plateau discontinuous permafrost: continuous coefficient 50%-90%

(4) Plateau island permafrost: continuous coefficient 50%-90%

(5) Mountain permafrost

The compilation basis of the frozen soil map includes (1) the measured field survey data and exploration of frozen soil; (2) aerial image and satellite image interpretation; (3) TOPO30 1-km resolution ground elevation data; and (4) and temperature and ground temperature data. The distribution of frozen soil on the Tibetan Plateau adopted the research results of Zhuotong Nan et al. (2002). Using the average annual temperature data of 76 boreholes along the Qinghai-Tibet Highway, a statistical regression analysis was performed to obtain the relation between annual mean ground temperature, latitude and elevation. Based on the relation combined with GTOPO30 elevation data (global 1-km digital elevation model data developed by the Earth Resources Observation and Technology Center of the U.S Geological Survey), the annual average ground temperature distribution over the entire Tibetan Plateau was simulated. Taking the annual average ground temperature of 0.5 °C as the boundary between permafrost and seasonal frozen soil and the Map of Snow Ice and Frozen Ground in China (1:4,000,000) (Yafeng Shi, et al., 1988) as a reference, the boundary between the plateau discontinuous permafrost and plateau island permafrost was determined. In addition, taking the Distributions Map of Permafrost in Daxiao Hinganling Northeast China (Dongxin Guo, et al. 1981), the Distribution Map of Permafrost and Ground Ice in Circum-Arctic (Brown et al. 1997) and the latest field data as references, the permafrost boundary of northeast China has been revised; the mountain permafrost boundary in the northwest mostly adopted the boundary delineated in the Map of Snow Ice and Frozen Ground in China (1:4,000,000) (Yafeng Shi, et al., 1988).

According to this data set, permafrost area in China is approximately 1.75×106 km2, accounting for 18.25% of the territory of China, among which the mountain permafrost area is 0.29×106 km2, which accounts for 3.03% of the territory of China.

For more information, please refer to the Map of the Glaciers, Frozen Ground and Deserts in China (1:4,000,000) specification (Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, 2006).


Data file naming and use method

File name: the data is stored in vector SHP format, the file name is "permafrost" and frozen soil name
Data reading mode: it can be opened with ArcGIS, QGIS and other software, and can directly read shp files


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

WANG Tao, SHI Yafeng, GUO Dongxin. Frozen ground map of China based on a Map of the Glaciers, Frozen Ground and Deserts in China (1981-2006). National Tibetan Plateau Data Center, 2012. doi: 10.11888/Geocry.tpdc.270038. (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.


References literature

1.Shi, Y.F., Mi, D.S. (1988). Map of Snow Ice and Frozen Ground in China (1:4,000,000) (First edition). Beijing, China's Map Press. (View Details )

2.Nan, Z.T., Li, S.X., Liu, Y.Z. (2002). Mean annual ground temperature distribution on the Tibetan Plateau : permafrost distribution mapping and further application[J]. Journal of Glaciology and Geocryology, 02, 142-148. (View Details )

3.Guo, D.X., Wang, S.L., Lu, G.W., Dai, J.B., Li, E.Y. (1981). Division of permafrost regions in Daxiao Hinganling Northeast China. Journal of Glaciology and Geocryology, 3(3), 1-9. (View Details )


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


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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: 1 MB
  • Browse count: 15,146 Times
  • Apply count: 26 Times
  • Share mode: online
  • Temporal coverage: 1981-01-01 To 2006-12-31
  • Updated time: 2019-08-08
Contact Information
: WANG Tao   SHI Yafeng   GUO Dongxin  

Distributor: National Tibetan Plateau Data Center

Email: data@itpcas.ac.cn

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