PEMETAAN TINGKAT BAHAYA EROSI PADA LEVEL SUB-DAS: STUDI PADA DUA DAS IDENTIK
ABSTRACT: This research deals
with the prediction of erosion level by means of USLE and GIS software. USLE
was used to calculate the erosion level at the watershed level, then the result
was classified and mapped on the top of ArcGIS. Two similar sub-watersheds
(Kloposawit and Rawatamtu) in the eastern part of East Java were used for this
study. Input data consist of: (1) ASTER GDEM2 (resolution pixel ± 30m), (2)
soil map layer, (3) land uses map, (4) rainfall data, and (5) ground control
points. Research procedures include (1) data inventory, (2) analysis using
excel and ArcGIS, (3) calculation of erosion level, (4) field survey using GPS,
and (5) interpretation. The research result shows that about 56,4 km2 (7,8%)
area of Kloposawit sub-watersheds is classified as high and very high erosion
level rate. This area cover 8 districts at Bondowoso Regency. Furthermore, at
Rawatamtu sub-watershed, high and very high erosion level cover 7 districts in
Jember Regency.
Penulis: Ika Kartika
Kode Jurnal: jppertaniandd160740
