ANALISA TINGKAT BAHAYA EROSI PADA SUB DAS LESTI KABUPATEN MALANG MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS
ABSTRACT: Sub DAS Lesti is a
part of Brantas watershed that located at upstream section and a sub DAS priority.
That has 61.491,02 ha of water catchment areas. Hydrological processes that
occur in awatershed is closely related to erosion. The alteration of land use
and watershed management is oneof the factors causing soil damage, accelerate
the erosion rate, and cause erosion. Based on thecondition of that case, this
study analyzes about how much the erosion rate, the amount of erosion, and to
estimate the level of erosion that will occur.
MUSLE method is one of the methods used to determine the magnitude of the
erosion rate, that use an approach of runoff factor. Geographic Information
Systems (GIS) used for the managementand data processing. Geographic Information
Systems is a spatially information technology thatgenerate digital data which
can gives the area characteristics, and illustrates the potential of soildamage.
The level of erosion hazard on Sub DAS Lesti for weight categories reach
31.421% of the area, while another erosion rate is Medium 24.146%, Lightweight
22.151%, Very Heavy 16.123%,and Very Light 6.159%.
Penulis: Ernawan Setyono,
Bangkit Prasetyo
Kode Jurnal: jptsipildd120298
