Abstract:
:Soil erosion is a severe problem for many developing regions that lack adequate infrastructure to combat the problem. The authors established a first-order method for prioritizing areas to be examined and remediated using preexisting data and expert knowledge where data are lacking. The Universal Soil Loss Equation was applied to the Rio Lempa Basin in Central America using geographic information systems and remote sensing technologies, and the estimated erosion rates were compared with sediment delivery ratios. Spatial analysis indicates that agriculture on very steep slopes contributes only a small fraction to the total estimated soil erosion, whereas agriculture on gentle and moderately steep slopes contributes a large fraction of the erosion. Although much of the basin is in El Salvador, the greatest estimated amount of erosion is from Honduras. Data quality and availability were impaired by a lack of coordination among agencies and across countries. Several avenues for improving the authors' methods are described.
journal_name
Environ Managejournal_title
Environmental managementauthors
Kim JB,Saunders P,Finn JTdoi
10.1007/s00267-002-0065-zkeywords:
subject
Has Abstractpub_date
2005-12-01 00:00:00pages
872-85issue
6eissn
0364-152Xissn
1432-1009journal_volume
36pub_type
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