Proceedings of the 2nd International Conference on Smart and Innovative Agriculture (ICoSIA 2021)

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Sensitivity to Erosion Based on Morphometry and the Erosion Rate in Blongkeng Watershed

Authors
Faizal Nur Fahmi1, Ambar Kusumandari2, *
1Alumny of Forest Resource Conservation Department, Faculty of Forestry, Universitas Gadjah Mada
2Senior Lecturer at the Forest Resource Conservation Department, Faculty of Forestry, Universitas Gadjah Mada
*Corresponding author. Email: ambar_kusumandari@ugm.ac.id
Corresponding Author
Ambar Kusumandari
Available Online 10 March 2022.
DOI
10.2991/absr.k.220305.005How to use a DOI?
Keywords
Erosion; Sensitivity; USLE; Watershed; Morphometry
Abstract

The Blongkeng sub-watershed is one of the sub-watersheds in the Progo watershed and is located on the north-west slope of Mount Merapi. This sub-watershed is considered a priority because it plays an important role in the entire Progo watershed system. The existence of vegetation damage and land degradation due to the eruption of Mount Merapi has an impact on surface runoff and erosion of the western slopes of Mount Merapi. The impacts of erosion include drought and silting in rivers. Estimation of the erosion level using the USLE model, but this method has the disadvantage of requiring a lot of data and is not easy to obtain. A simple erosion assessment method in the form of erosion sensitivity using watershed morphometric parameters were applied. The morphometric parameters were analyzed quantitatively are then ranked to get the erosion sensitivity rating in the watershed. The purpose of this study was to determine the comparison of erosion assessment methods using morphometric parameters and using USLE. The results obtained from this study are the ranking of erosion estimation using morphometry and erosion estimation using USLE. The similarity of rankings is at ranks 1, 2, 3, and 10. Similarities and differences in rankings is a result of the morphometric parameters that are not suitable if they are involved in calculating the morphometric ranking in the research area of the Blongkeng Sub-watershed, namely the drainage density (Dd) parameter, stream frequency (Fs), texture ratio (T), mean length overflow (Lof), form factor (Rf), circulary ratio (Rc) and elongation ratio (Re).

Copyright
© 2022 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article under the CC BY-NC license.

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Volume Title
Proceedings of the 2nd International Conference on Smart and Innovative Agriculture (ICoSIA 2021)
Series
Advances in Biological Sciences Research
Publication Date
10 March 2022
ISBN
10.2991/absr.k.220305.005
ISSN
2468-5747
DOI
10.2991/absr.k.220305.005How to use a DOI?
Copyright
© 2022 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article under the CC BY-NC license.

Cite this article

risenwbib
TY  - CONF
AU  - Faizal Nur Fahmi
AU  - Ambar Kusumandari
PY  - 2022
DA  - 2022/03/10
TI  - Sensitivity to Erosion Based on Morphometry and the Erosion Rate in Blongkeng Watershed
BT  - Proceedings of the 2nd International Conference on Smart and Innovative Agriculture (ICoSIA 2021)
PB  - Atlantis Press
SP  - 25
EP  - 31
SN  - 2468-5747
UR  - https://doi.org/10.2991/absr.k.220305.005
DO  - 10.2991/absr.k.220305.005
ID  - Fahmi2022
ER  -