IDENTIFIKASI KERENTANAN EROSI TANAH BERDASARKAN PARAMETER MORFOMETRI DI SUB DAS KIKIM

Main Article Content

Alharia Dinata

Abstract

Soil erosion is an environmental problem that occurs in many parts of the world because it involves ecological, social and economic aspects. Kikim sub-watershed is part of the Musi river area, most of the topographic conditions are flat slopes (54.64%), steep slopes with a total percentage of 12.81%. Meanwhile, hydrological conditions have a maximum daily rainfall with a high category so that the potential for erosion and flooding is very high. The purpose of this study was to identify soil erosion vulnerability based on morphometric parameters. The research data used DEM-SRTM 30 meters and then extracted into a map of the sub-watershed and river networks to calculate morphometric parameters. The method used was the weighted sum analysis (WSA) with a GIS application approach. The DEM data excavation found 11 (eleven) sub-watersheds with an area ranging from 81.26 km2 to 220.50 km2, and the total length of the river was 2221.24 km. Based on the weighted results of the WSA method, two sub-watersheds (SB3 and SB7) had very high soil erosion vulnerability, moderate soil erosion vulnerability in SB1, SB2, SB4, SB8, SB10, and SB11. Furthermore, the low soil erosion vulnerability (SB9), and very low soil erosion vulnerability were at SB5 and SB6. The results of this study could be used for conservation zone planning to control soil erosion.

Article Details

Section
Articles

References

Altaf, S., Meraj, G., & Romshoo, S. A. (2014). Morphometry and land cover based multi-criteria analysis for assessing the soil erosion susceptibility of the western Himalayan watershed. Environmental Monitoring and Assessment, 186(12), 8391–8412. https://doi.org/10.1007/s10661-014-4012-2
Arsyad, S. (2010). Konservasi Tanah & Air (Edisi Kedu). IPB Press. http://repository.ipb.ac.id/handle/123456789/42667
Basuki TM, P. R. (2013). Aplikasi sistem informasi geografis untuk penilaian tingkat kerentanan lahan terhadap degradasi di Daerah Aliran Sungai Musi. Prosiding Seminar Nasional Pendayagunaan Informasi Geospasial Untuk Optimalisasi Otonomi Daerah, 1689–1699.
Budi Pramono, I., & Buana Putra, P. (2017). Tipologi Daerah Aliran Sungai Untuk Mitigasi Bencana Banjir Di Daerah Aliran Sungai Musi. Jurnal Penelitian Pengelolaan Daerah Aliran Sungai, 1(2), 143–165. https://doi.org/10.20886/jppdas.2017.1.2.143-165
Chorley, R. (1995). Horton, R.E. 1945: Erosional development of streams and their drainage basins: Hydrophysical approach to quantitative morphology. Bulletin of the Geological Society of America 56, 2 75-370. Progress in Physical Geography, 19(4), 533–554. https://doi.org/10.1177/030913339501900406
Horton, R. E. (1932). Drainage‐basin characteristics. Eos, Transactions American Geophysical Union, 13(1), 350–361. https://doi.org/10.1029/TR013i001p00350
Horton, R. E. (1945). Erosion development in stream and their drainage basins. Geological Society Of America Bulletin, 56(1), 275–370. https://doi.org/10.1130/0016-7606(1945)56
Kadam, A. K., Jaweed, T. H., Kale, S. S., Umrikar, B. N., & Sankhua, R. N. (2019). Identification of erosion-prone areas using modified morphometric prioritization method and sediment production rate: a remote sensing and GIS approach. Geomatics, Natural Hazards and Risk, 10(1), 986–1006. https://doi.org/10.1080/19475705.2018.1555189
Meshram, S. G., & Sharma, S. K. (2017). Prioritization of watershed through morphometric parameters: a PCA-based approach. Applied Water Science, 7(3), 1505–1519. https://doi.org/10.1007/s13201-015-0332-9
Miller, V. C. (1953). A quantitative geomorphic study of drainage basin characteristics in the clinch mountain area, virginia and tennessee. Department of Geology Columbia University, New York.
Schumm, S. A. (1956). Geological Society of America Bulletin EVOLUTION OF DRAINAGE SYSTEMS AND SLOPES IN BADLANDS AT PERTH AMBOY , NEW JERSEY. Geological Society Of America Bulletin, 67(5), 597–646. https://doi.org/10.1130/0016-7606(1956)67
Singh, O., & Singh, J. (2018). Soil Erosion Susceptibility Assessment of the Lower Himachal Himalayan Watershed. Journal of the Geological Society of India, 92(2), 157–165. https://doi.org/10.1007/s12594-018-0975-x
Strahler, A. (1964). Part II. Quantitative geomorphology of drainage basins and channel networks. Handbook of Applied Hydrology. In McGraw-Hill, New York, (pp. 4–39.). Mcgraw Hill Book Company, New York. http://hydrologie.org/hsj/101/101010.pdf
Strahler, A. N. (1952). Hypsometric (area-altitude) analysis of erosional topography. Bulletin of the Geological Society of America, 63(11), 1117–1142. https://doi.org/10.1130/0016-7606(1952)63[1117:HAAOET]2.0.CO;2
Strahler, A. N. (1957). Quantitative Analysis of Watershed Geomorphology, Transactions of the American Geophysical Union. Transactions, American Geophysical Union, 38(6), 913–920.
Tewari, N. K., Misra, A. K., & Sharma, A. (2019). Assessment of geomorphological and hydrological variations in Bhagirathi River Drainage sub-basin with the help of morphometric studies. Journal of Taibah University for Science, 13(1), 1006–1013. https://doi.org/10.1080/16583655.2019.1670888