ANALYSIS OF RAINFALL EROSIVITY INDEX USING THE BOLS AND LENVAIN METHODS
DOI:
https://doi.org/10.11113/mjce.v35.19780Keywords:
Bols, Climate, Erosion, Lenvain, Rainfall erosivity, Khilau Sub-Sub Watershed, Rainfall, Erosivity Index, Soil Erosion, Bols Method, Lenvain Method, Khilau WatershedAbstract
Indonesia has a tropical climate, which causes variations in the intensity of rainfall. With a high level of rainfall intensity, Indonesia is vulnerable to. The ability of to cause erosion is called erosivity. The aim of the study was to determine the rain erosivity index as a potential erosion control plan. The employed methods were the Bols and Lenvain methods involving the rainfall consistency test, analysis of average rainfall, and analysis of the erosivity index of rain. The results indicate that only Penengahan Station was eligible for the rainfall analysis with determination coefficient values (R2) of 0.9904 and 0.9889 with the Bols and Lenvain methods respectively. The annual average erosivity index value with the Bols method was 1762.23, while with the Lenvain method, it was 1280.19. With the results in mind, it is safe to infer that the use of the Bols equation is safer to apply to a plan concerning erosion potential mitigation caused by rainfall in the sub-sub watershed area of Khilau as the Bols method yielded a larger value.
References
Arsyad, S. 2012.” Konservasi Tanah dan Air”. Bogor: Institute Pertanian Bogor Press
Asdak, C. 2007. “Hidrologi dan Pengelolaan Daerah Aliran Sungai”. Gadjah Mada University Press. Yogyakarta.
Borrelli, P., Robinson, D.A., Panagos, P., Ballabio, C. 2020. “Land use and climate change impacts on global soil erosion by water (2015–2070)”. PNAS University of Maryland U.S.A. 117(36): 2199422001. doi: 10.1073/pnas.2001403117
Dijk, ALEM.V, Bruijnzeel, L.A. and, Rosewell, C.J. 2002. “Rainfall Intesity Kinetic Energy Relationship: a Critical Literature Appraisal.” Journal of Hydrology. 261 (1-4): 1-23. Doi: 10.1016/S0022-1694(02)00020-3
Derakhshana H and Talebbeydokhti N. 2011. “Rainfall disaggregation in non-recording gauge stations using space-time information system”. Scientia Iranica Transactions A: Civil Engineering. 18(5): 995–1001. DOI: 10.1016/j .scient.2011.08.003
Dominati, E., Murray, P., Alec, M. 2010. “A framework for classifying and quantifying the natural capital and ecosystem services of soils”. Ecological Economics , 69(9): 1858–1868 doi.org/10.1016/j.ecolecon. 2010.05.002.
Hartono, R. (2016). “Identifikasi Bentuk Erosi Tanah Melalui Interpretasi Citra Google Earth di Wilayah Sumber Brantas Kota Batu”. Jurnal Pendidikan Geografi. 21(1): 30-42 Doi: http://dx.doi.org/10.17977/pg.v 21i1.5422
Li, Z. and Fang, H. 2016. “Impacts of climate change on water erosion: A review”. Earth-Science Reviews. 163: 94–117. https://doi.org/10.1016/j.earscirev. 2016.10.004
Lukic, T., Basarin, B., Micic, T., Bjelajac, D., Maris, T., Markovic, S.B., et al. 2010. “Rainfall erosivity and extreme precipitation in the Netherlands”. Id ̋oj ́ar ́as. 122(4):361-462. doi.org/10.28974/idojaras.2018.4.4
Lukic, T., Lukic A., Basarin, B., Ponjiger, T.M., et al. 2019. “Rainfall Erosivity and Extreme Precipitation in the Pannonian Basin”. Open Geosci. 11: 664–681. https://doi.org /10.1515/geo-2019-0053
Nawras, S. and Mohammed, T.O. 2022. “Remote-sensing Approach to Assess Erosion and Floods in Wadi Rum Protected Area”. Jordan Journal of Civil Engineering. 16(4)
Omar, A., Nawras O. and Mohammad, M. 2018. “Nonlinear Multivariate Rainfall Prediction in Jordan Using NARX-ANN Model with GIS Techniques”. Jordan Journal of Civil Engineering, 12(3): 359-368
Panagos, P., Ballabio, C., Borrelli, P., Meusburger, K., Klik, A., et al. (2015). “Rainfall erosivity in Europe. Sci. Total Environ”. 511: 801–814. Doi: 10.1016/j.scitotenv.2015.01.008
Pratama, P. and Yuwono, S.B. (2016). “Analisis perubahan penggunaan lahan terhadap karakteristik hidrologi di DAS Bulok”. Jurnal Sylva Lestari . 4(3): 47–58. doi: http://dx.doi.org/10.23960/jsl3411-20
Panagos, P., Borrelli P., Meusburge K., et al. (2017). “Global rainfall erosivity assessment based on high-temporal420 resolution rainfall records”. Scientific Reports, 7(1): 4175. doi: 10.1038/s41598-017-04282-8
Peraturan Menteri Kehutanan No 32, 2009, Tata Cara Penyusunan Rencana Teknik Rehabilitasi Hutan dan Lahan Daerah Aliran Sungai (RTTkRHL-DAS), Jakarta.
Ratih, R.N., Irwan, S.B., Duryat, Slamet B.Y. 2021. “Karbon Tersimpan Di Tata Guna Lahan Sub-Sub Das Khilau Das Sekampung”. Jurnal Hutan Tropis 9(1) Lampung. Doi: http://dx.doi.org/10. 20527/jht.v9i1.10475
Schmidt, S., Alewell, C., Panagos, P., Meusburger, K. 2016. “Regionalization of monthly rainfall erosivity patterns in Switzerland. Hydrology and Earth System Sciences 20: 4359–4373. https://doi.org/10.5194/hess-20-4359-2016
Searcy J.K. and Hardison C.H. 1960. “Double-Mass Curves”. United States Government Printing Office. Washington
Soewarno. 2000.”Hidrologi Operasional edisi kesatu”. Penerbitan, Bandung : Citra Aditya Bakti,.
Stewart, B.A., Woolhiser, D.A., Wischmeier, W.H., Caro, J.H. and Frere, M.H. 2008.” Control of Water Pollution from Cropland”. Agricultire Research Service U.S. Department of Agriculture.
Strohmeier, S., Laaha, G., Holzmann, H., Klik, A. 2016. “Magnitude and Occurrence Probability of Soil Loss: A Risk Analytical Approach for the Plot Scale For Two Sites in Lower Austri”a. Land Degrad. 27(1): 43–51. Doi: 10.1002/ldr.2354
Utomo, W.H. 2001. “Erosi dan Konservasi Tanah”. Malang: Penerbit IKIP.
Wanie M. R, Michelle S., Awatif A., Khairul F.K., Ali N.A., Ahmed E. 2021. “Rainfall forecasting model using machine learning methods: Case study Terengganu, Malaysia”. Ain Shams Engineering Journal 12: 1651–1663. doi https://doi.org/10.1016/j.asej.2020.09.011
Yousef, M.M. 2014. “Landslide Hazards: Geotechnical Aspects and Management Policies”. Jordan Journal of Civil Engineering. 8(1). Doi: 10.14525/jjce.8.1.2625
Yue, T., Xie Y., Yin S., et al. 2020. “Effect of time resolution of rainfall measurements on the erosivity factor in the USLE in China”. International Soil and Water Conservation Research. 8(4): 273-382. https://doi.org/10. 1016/j.iswcr.2020.06.001