This dataset contains field descriptors:
Num_ Code (permafrost attribute code)
Combo (permafrost attribute)
Extend (frozen soil range)
Content (ice content)
Attribute comparison is as follows:
(1) Comparison table of frozen soil properties:
0 (No information )
1 - chf (Continuous permafrost extent with high ground ice content and thick overburden)
2 - dhf (Discontinuous permafrost extent with high ground ice content and thick overburden )
3 - shf (Sporadic permafrost extent with high ground ice content and thick overburden )
4 - ihf (Isolated patches of permafrost extent with high ground ice content and thick overburden )
5 - cmf (Continuous permafrost extent with medium ground ice content and thick overburden )
6 - dmf (Discontinuous permafrost extent with medium ground ice content and thick overburden )
7 - smf (Sporadic permafrost extent with medium ground ice content and thick overburden )
8 - imf (Isolated patches of permafrost extent with medium ground ice content and thick overburden)
9 - clf (Continuous permafrost extent with low ground ice content and thick overburden )
10 - dlf (Discontinuous permafrost extent with low ground ice content and thick overburden )
11 - slf (Sporadic permafrost extent with low ground ice content and thick overburden )
12 - ilf (Isolated patches of permafrost extent with low ground ice content and thick overburden)
13 - chr (Continuous permafrost extent with high ground ice content and thin overburden and exposed bedrock )
14 - dhr (Discontinuous permafrost extent with high ground ice content and thin overburden and exposed bedrock )
15 - shr (Sporadic permafrost extent with high ground ice content and thin overburden and exposed bedrock )
16 - ihr (Isolated patches of permafrost extent with high ground ice content and thin overburden and exposed bedrock)
17 - clr (Continuous permafrost extent with low ground ice content and thin overburden and exposed bedrock )
18 - dlr (Discontinuous permafrost extent with low ground ice content and thin overburden and exposed bedrock )
19 - slr (Sporadic permafrost extent with low ground ice content and thin overburden and exposed bedrock)
20 - ilr (Isolated patches of permafrost extent with low ground ice content and thin overburden and exposed bedrock )
21 - g (Glaciers)
22 - r (Relict permafrost)
23 - l (Inland lakes )
24 - o (Ocean/inland seas )
25 - ld (Land)
(2) Comparison table of frozen soil range
c = continuous (90-100%)
d = discontinuous (50- 90%)
s = sporadic (10- 50%)
i = isolated patches ( 0 - 10%)
(3) Comparison table of ice content
h = high (>20% for "f" landform codes) (>10% for "r" landform codes)
m = medium (10-20%)
l = low (0-10%)
collect time | 2001/01/01 - |
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collect place | China, the surrounding areas of China |
data size | 1.6 MiB |
data format | Esri Shapefile |
Coordinate system | WGS84 |
# | title | file size |
---|---|---|
1 | Permaice_China.dbf | 207.3 KiB |
2 | Permaice_China.qpj | 257 Bytes |
3 | Permaice_China.sbn | 6.6 KiB |
4 | Permaice_China.sbx | 748 Bytes |
5 | Permaice_China.shp | 1.4 MiB |
6 | Permaice_China.shx | 5.0 KiB |
7 | 属性表.xlsx | 9.8 KiB |
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