数据集包括:
1、permaice(冻土类型图)
2、subsea(海底界线矢量图)
3、treeline(林线矢量图)
4、nhipa(栅格图)
5、llipa(栅格图)
Permaice包括属性字段:
Num_code(冻土属性编码)
<pCombo(冻土属性)
extent(冻土范围)</p
content(含冰量)
属性对照如下:
(1)冻土属性对照表:
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)冻土范围对照表
c = continuous (90-100%)
d = discontinuous (50- 90%)
s = sporadic (10- 50%)
i = isolated patches ( 0 - 10%)
(3)含冰量对照表
h = high (>20% for "f" landform codes) (>10% for "r" landform codes)
m = medium (10-20%)
l = low (0-10%)
Projection of the shapefiles is:
PROJCS["Sphere_ARC_INFO_Lambert_Azimuthal_Equal_Area",
GEOGCS["GCS_Sphere_ARC_INFO",
DATUM["Sphere_ARC_INFO", SPHEROID["Sphere_ARC_INFO",6370997.0,0.0]],
PRIMEM["Greenwich",0.0],
UNIT["Degree",0.0174532925199433]],
PROJECTION["Lambert_Azimuthal_Equal_Area"],
PARAMETER["False_Easting",0.0],
PARAMETER["False_Northing",0.0],
PARAMETER["longitude_of_center",180.0],
PARAMETER["latitude_of_center",90.0],
UNIT["Meter",1.0]]
Projection for the raster (*.byte) files is:
Projection: Lambert Azimuthal
Units: meters
Spheroid: defined
Major Axis: 6371228.00000
Minor Axis: 6371228.000
Parameters:
radius of the sphere of reference: 6371228.00000
longitude of center of projection: 0
latitude of center of projection: 90
false easting (meters): 0.00000
false northing (meters): 0.00000
采集地点 | 环北极 |
---|---|
数据量 | 197.4 MiB |
数据格式 | 矢量 |
数据空间分辨率(/米) | 100000.0m |
坐标系 | WGS84 |
投影 | +proj=laea +lat_0=90 +lon_0=0 +x_0=0 +y_0=0 +a=6371228 +b=6371228 +units=m +no_defs |
数字矢量化
数据集通过严格的人工审核控制质量
# | 标题 | 文件大小 |
---|---|---|
1 | 1000万环北极地区冻土图.rar | 195.6 MiB |
2 | 环北极地区多年冻土和地下冰状态图(V2)-文档.rar | 916.9 KiB |
3 | 环北极地区多年冻土和地下冰状态图(V2).rar | 916.9 KiB |
# | 时间 | 姓名 | 用途 |
---|---|---|---|
1 | 2024/04/20 04:16 | 夏*宇 |
受自然科学基金委项目支持,用于研究东北寒区冻土泥炭地
|
2 | 2024/03/11 06:56 | 王*驹 |
本人是中南大学土木工程学院岩土系学生,申请此数据用于研究
|
3 | 2024/03/05 19:28 | 伊*娟 |
蒙古国规划工程建设项目,地质条件研究需要
|
4 | 2024/02/23 19:32 | 王*超 |
项目报告中需要展示环北极冻土分布,作者会注明数据来源和参考格式
|
5 | 2024/02/21 05:28 | 沙*盟 |
用于论文撰写,主题为研究冰冻圈河流侵蚀增加了冻土有机碳的释放
|
6 | 2024/02/20 02:12 | 董*煜 |
Paper title:基于机器学习的土壤水分模拟及在青藏高原的干旱风险评估
Paper abstract:利用该数据进行研究区概况的说明
Paper type:硕士论文
Tutor 严登华
|
7 | 2024/01/19 17:18 | 陈*一 |
论文题目:大兴安岭冻土对树木生长的影响
数据在研究中的作用:背景介绍
论文类型:学位论文
导师姓名:陈振举
|
8 | 2024/01/12 01:41 | 邹*云 |
论文题目:极低温条件下不同土质未冻水变化特征与含量预测
数据在研究中的作用:作为选题依据中的一部分
论文类型:博士大论文
导师姓名:汪恩良
|
9 | 2024/01/01 07:24 | 长* |
用于meta数据分析,结合其他环境因子进行综合分析
|
10 | 2023/09/26 23:57 | 吕*婴 |
用于研究生科研项目的北半球冻土边界范围矢量数据的搜索,进行特定范围内的土地变化模拟
|
© 中国科学院西北生态环境资源研究院 2005- 备案号:陇ICP备2021001824号-21
兰州市东岗西路320号 730000 电话:0931-4967592, 0931-4967596