GEE数据集:土壤网格250m v2.0
SoilGrids被设计成一个全球一致的、以数据为导向的系统,使用全球协变量和全球拟合模型预测土壤属性和类别。如果您正在寻找国家和/或地方层面的土壤信息,我们建议将SoilGrids的预测与来自国家和地方土壤地理数据库的土壤图进行比较。国家土壤地图通常基于更详细的输入土壤信息,因此通常比SoilGrids更准确(在当地覆盖区域内)。关于国家和地区土壤数据库的概述,请参考《土壤地理数据库汇编》。平均值 "和 "中位数(0.5四分位数)"都可以作为特定单元的土壤属性的预测值。平均值代表 "预期值",并提供土壤属性的无偏预测。
Name | Description | Mapped units | Conversion factor | Conventional units | Assets on GEE |
---|---|---|---|---|---|
bdod | Bulk density of the fine earth fraction | cg/cm³ | 100 | kg/dm³ | |
cec | Cation Exchange Capacity of the soil | mmol©/kg | 10 | cmol©/kg | |
cfvo | Volumetric fraction of coarse fragments (> 2 mm) | cm3/dm3 (vol‰) | 10 | cm3/100cm3 (vol%) | |
clay | Proportion of clay particles (< 0.002 mm) in the fine earth fraction | g/kg | 10 | g/100g (%) | |
nitrogen | Total nitrogen (N) | cg/kg | 100 | g/kg | |
phh2o | Soil pH | pHx10 | 10 | pH | |
sand | Proportion of sand particles (> 0.05 mm) in the fine earth fraction | g/kg | 10 | g/100g (%) | |
silt | Proportion of silt particles (≥ 0.002 mm and ≤ 0.05 mm) in the fine earth fraction | g/kg | 10 | g/100g (%) | |
soc | Soil organic carbon content in the fine earth fraction | dg/kg | 10 | g/kg | |
ocd | Organic carbon density | hg/dm³ | 10 | kg/dm³ | |
ocs | Organic carbon stocks | t/ha | 10 | kg/m² |
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Publication date
2020-05-04
Period
Fri Mar 31 1905 19:00:00 GMT-0500 Mon Jul 04 2016 20:00:00 GMT-0400
Provided by :
International Soil Reference and Information Centre (ISRIC)
License
Attribution 4.0 International (CC BY 4.0)
DOI
Created and Curated by: International Soil Reference and Information Centre (ISRIC)
Keywords: For example Global Soilgrid, Sandy Soil, ISRIC
Last updated: 2020-10-20
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