variety of temperature and moisture conditions available to species as local
habitats. It expresses the logic that a higher variety of topo-climate
niches should support higher diversity (especially plant) and support
species persistence given climatic change.
To calculate D, the multi-scale Topographic Position Index (mTPI), being a
dominant control of soil moisture (T), was used for measuring hillslope
position. The mTPI was combined with the square-root transform for
mTPI>0 (T’) and with the standard deviation of the Continuous
Heat-Insolation Load Index (CHILI), calculated at multiple scales (C’) as:
D = 1 – ((1-T’) * (1-C’). It is based on the USGS’s 10m NED DEM (available
in EE as USGS/NED).
Version 1.0
Topographic diversity (D) is a surrogate variable that represents the
variety of temperature and moisture conditions available to species as local
habitats. It expresses the logic that a higher variety of topo-climate
niches should support higher diversity (especially plant) and support
species persistence given climatic change.
To calculate D, the multi-scale Topographic Position Index (mTPI), being a
dominant control of soil moisture (T), was used for measuring hillslope
position. The mTPI was combined with the square-root transform for
mTPI>0 (T’) and with the standard deviation of the Continuous
Heat-Insolation Load Index (CHILI), calculated at multiple scales (C’) as:
D = 1 – ((1-T’) * (1-C’). It is based on the USGS’s 10m NED DEM (available
in EE as USGS/NED).
Name | Description |
---|---|
constant | NED-derived topographic diversity |
Providers | |
---|---|
Conservation Science Partners (producer, licensor) | |
Google Earth Engine (host) | |
STAC Version | 0.6.0 |
Keywords | aspect, csp, elevation, ergo, geophysical, landforms, slope, topography, us |
License | proprietary |
Temporal Extent | 1/23/2006, 4:00:00 PM - 5/12/2011, 5:00:00 PM |
Citation | Theobald, D. M., Harrison-Atlas, D., Monahan, W. B., & Albano, C. M. (2015). Ecologically-relevant maps of landforms and physiographic diversity for climate adaptation planning. PloS one, 10(12), [e0143619](http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0143619) |
Type | image |
GSD | metersm |