Perhitungan Erosi Kualitatif Dengan Analisis Citra Satelit Di Sub DAS Tulis, Daerah Tangkapan Waduk MRICA
| Main Authors: | Harjadi, Beny, Susanti, Pranata Dyah |
|---|---|
| Format: | Article info application/pdf Journal |
| Bahasa: | eng |
| Terbitan: |
Universitas Lambung Mangkurat
, 2019
|
| Subjects: | |
| Online Access: |
https://ppjp.ulm.ac.id/journal/index.php/es/article/view/6318 https://ppjp.ulm.ac.id/journal/index.php/es/article/view/6318/5122 |
Daftar Isi:
- The purpose of this study is to calculate qualitative erosion with digital analysis of satellite imagery in Subwatershed Tulis. Planning for a watershed for the long term requires the calculation of qualitative erosion values that are accurate and spread evenly to each land unit. This study uses digital analysis methods by relying on the digital value of each pixel that can be performed mathematically. Satellite images used are Landsat TM 8 images on October 31, 2016, and a radar image is SRTM (Shuttle Radar Topography Mission). The analysis was carried out by calculating each of the factors causing erosion in the form of drainage maps, aspect maps, slope maps, texture maps, and land cover maps. Each factor was given a score or score from 1 to 3, namely low (1), medium (2) and high (3), so that after being calculated by the method of SES (Soil Erosion Status) it became light level erosion (1) <50, medium (2 ) = 50-100 and weight (3)> 100 tons/ha/ year. The results of the calculation of qualitative erosion in Sub-watershed Tulis which has an area of 12,750 ha, obtained light erosion 4% (529 ha), medium 85% (10,781 ha), and weight 11% (1,440 ha).