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World_HistosolDistribution_2011_CIFOR (Map Service)


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Current Version: 10.81

Service Description: Distribution of histosol (a soil consisting primarily of organic materials) that covers the tropics and sub tropics (38° N to 56° S; 161° E to 117° W), excluding small islands. It was mapped in 236 meters spatial resolution by combining a hydrological model and annual time series of satellite-derived estimates of soil moisture to represent water flow and surface wetness that are then combined with geomorphological data. Methodologically, histosols are identified using the same method than wetlands but with an important alteration: the surface has to be continuously wet (e.g. minimum wet conditions forced to be positive (pTWImin > 0) and the wettest annual conditions are forced to be above a certain threshold (pTWImax > 500) (Gumbricht 2015). Our model identifies areas with hydrological potential for histosol formation, without considerations on activities in the land that might remove this organic matter (e.g. drainage, fires, etc).

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Layers: Tables: Description: Distribution of histosol (a soil consisting primarily of organic materials) that covers the tropics and sub tropics (38° N to 56° S; 161° E to 117° W), excluding small islands. It was mapped in 236 meters spatial resolution by combining a hydrological model and annual time series of satellite-derived estimates of soil moisture to represent water flow and surface wetness that are then combined with geomorphological data. Methodologically, histosols are identified using the same method than wetlands but with an important alteration: the surface has to be continuously wet (e.g. minimum wet conditions forced to be positive (pTWImin > 0) and the wettest annual conditions are forced to be above a certain threshold (pTWImax > 500) (Gumbricht 2015). Our model identifies areas with hydrological potential for histosol formation, without considerations on activities in the land that might remove this organic matter (e.g. drainage, fires, etc).

Copyright Text:

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly

Tile Info:
Initial Extent:
Full Extent:
Min Scale: 5.91657527591555E8
Max Scale: 288895.277144

Min LOD: 0
Max LOD: 11

Units: esriMeters

Supported Image Format Types: PNG

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info: