|Gusta Gunawan||- Civil Engineering Department, Faculty of Engineering, Universitas Bengkulu, Bengkulu, Indonesia - Civil Engineering Department, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok|
|Dwita Sutjiningsih||Civil Engineering Department, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia|
|Herr Soeryantono||Civil Engineering Department, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia|
|W Sulistioweni||Civil Engineering Department, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia|
Soil erosion is a crucial environmental problem in the Manjunto
watershed, Bengkulu Province, Indonesia. It has economic implications
and environmental consequences. Assessment of potential soil erosion
rate is useful in designing soil conservation strategies within the
framework of integrated watershed management. Information obtained from
Remote Sensing (RS) and Geographic Information System (GIS) framework
supports decision makers in preparing more accurate spatial maps in less
time and cost. The aim of this research is to assess the average annual
rate of potential soil erosion in Manjunto watershed for each soil
mapping unit using remote sensing data, namely Normalized Difference
Vegetation Index (NDVI) and Slope. The NDVI value obtained from
satellite imagery processing while slope value obtained from Digital
Elevation Model-Shuttle Radar Topographic Mission (DEM-SRTM) processing.
The results showed that the eroded catchment area increased
significantly. The average annual rate of potential soil erosion in
Manjunto watershed in the year 2000 amounted to 3.00 tons ha- 1 year-1,
while in the year 2009 there was a significant increase to 27.03 ton
ha-1year-1. The levels of erosion hazard in soil mapping unit numbers
41, 42 and 47 are classified in the very heavy category. Soil mapping
unit numbers 41, 42 and 47 should be a first priority in soil and water
DEM-SRTM, GIS, NDVI, Remote Sensing, Soil erosion
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