|
Erosion is a combination of 4 «natural» parameters:
land use, topography, soil and climate.
- SOIL DB: derived from soil mapping units, interpreted as textural
data (e.g. from European Soils Database or Equivalent), and converted
to parameter values using pedo-transfer rules. Additional information
for some soil profiles, including moisture properties, is also
desirable.
- COVER: derived from land cover type (e.g. CORINE) and/or from
remote sensing data (e.g. AVHRR or Vegetation). Best results where
both data sources are available.
- DEM: Currently using Gtopo30, available from EROS database
in USA, at approximately 1km resolution. Better databases will
be available in the future, and it would be preferable to use
250 m or 100 m resolution data
- CLIMATE: Currently using the JRC MARS database, which is interpolated
data at 50 km resolution, although the poor spatial resolution
of this data is the most critical shortcoming of the application
of the model at 1 km. Preferred data consists of daily values
over up to 50 years of record, for individual stations.
Parameters:
|
