Analysis of The Level of Erosion Hazard in The Walanae Watershed and Land Conservation Directions to Reduce The Erosion Rate in The Walanae Watershed
DOI:
https://doi.org/10.46799/ijssr.v3i12.650Keywords:
Erosion, Watershed, Walanae, Land Conservation, ReduceAbstract
The Walanae Watershed (DAS) is one of the Walanae – Cenranae Sub Watersheds in several districts, including Wajo, Soppeng, Bone, and Maros regencies. The river flow in the Walanae watershed flows from south to north and empties into Lake Tempe, Wajo Regency. The condition of Lake Tempe, which continues to experience silting due to erosion and sedimentation, is still happening. This siltation resulted in sediment discharges reaching 519,000 m3/year. This siltation can cause a narrowing of the lake area and flooding around Lake Tempe. The purpose of this study is to model erosion control in the Walanae watershed to reduce the level of siltation that occurs in Lake Tempe. Analysis of the erosion rate of the Walanae watershed using the USLE method. The analysis results show that the erosion rate that occurred in 2000 was 187.52 Tons / Ha / Yr, while in 2022, it was 253.336 Tons / Ha / Yr. Scenarios based on land conservation actions can reduce the erosion rate by 149,034 tons/ha / Year. The scenario was carried out by considering slope classes and land cover in the Walanae watershed. In flat to gentle slope conditions, ground cover crops and livestock grazing are needed; in rice fields and dryland agriculture, rural and annuals and mulch reinforcement are needed. Conservation measures are needed in steep to very steep slope classes, such as bench terraces and plant cover crops for agricultural land cover. As for forest areas, permanent vegetation or agroforestry is needed.
References
Alka, D. S. N. (2022). Analisis Indeks Erosivitas Hujan Menggunakan Metode Bols Dan Lenvain (Studi Kasus: Sub-Sub DAS Khilau, Sub DAS Way Bulok, DAS Way Sekampung, Provinsi Lampung).
An, M., Han, Y., Zhao, C., Qu, Z., Xu, P., Wang, X., & He, X. (2022). Effects of different wind directions on soil erosion and nitrogen loss processes under simulated wind-driven rain. Catena, 217. https://doi.org/10.1016/J.CATENA.2022.106423
Arsyad, S. (2009). Konservasi tanah dan air. Pt Penerbit Ipb Press.
Atmojo, S. W. (2006). Degradasi lahan & ancaman bagi pertanian. Solo Pos, 7.
Fahruddin, M. Z., Saidy, A. R., Mizwar, A., & Badaruddin, B. (2022). Analisis Laju Erosi Menggunakan Metode Universal Soil Loss Equation (Usle) Dan Analisis Tingkat Bahaya Erosi. EnviroScienteae, 19(3), 163–170.
Firman, H. (2022). Pengelolaan Das Berkelanjutan Berbasiskan Murbei (Morussp).
Hamida, W. (2023). Tingkat Erodibilitas Tanah Pada Beberapa Penggunaan Lahan Di Desa Guntarano Kecamatan Tanantovea Kabupaten Donggala.
Harjito, A. , &; M. (2018). Financial Management.
Hasanuzzaman, Md., Islam, A., Bera, B., & Shit, P. K. (2023). Quantifying the riverbank erosion and accretion rate using DSAS model study from the lower Ganga River, India. Natural Hazards Research. https://doi.org/10.1016/J.NHRES.2023.12.015
Jayathilaka, R. M. R. M., Ratnayake, N. P., Wijayaratna, T. M. N., Silva, K. B. A., & Arulananthan, K. (2023). A Review of coastal erosion mitigation measures on Sri Lanka’s Western Coast, an Island Nation in the Indian Ocean: Current gaps and future directions. Ocean and Coastal Management, 242. https://doi.org/10.1016/J.OCECOAMAN.2023.106653
Li, H., Guan, Q., Sun, Y., Wang, Q., Liang, L., Ma, Y., & Du, Q. (2022). Spatiotemporal analysis of the quantitative attribution of soil water erosion in the upper reaches of the Yellow River Basin based on the RUSLE-TLSD model. Catena, 212. https://doi.org/10.1016/J.CATENA.2022.106081
Lin, Z., Han, Z., Ul Hussan, W., Bai, Y., & Wang, C. (2023). Upland river planform morphodynamics and associated riverbank erosion: Insights from channel migration of the upper Yarlung Tsangpo river. CATENA, 231, 107280. https://doi.org/10.1016/J.CATENA.2023.107280
Lufira, R. D., Andawayanti, U., Cahya, E. N., & Dianasari, Q. (2022). Land conservation based on erosion and sedimentation rate (case study of Genting Watershed Ponorogo Regency). Physics and Chemistry of the Earth, Parts A/B/C, 126, 103143. https://doi.org/10.1016/J.PCE.2022.103143
Maghriza, J. A. , & T. I. (2022). Analisis Perubahan Penggunaan Lahan Di Kecamatan Jatinom Kabupaten Klaten Tahun 2015 Dan 2020.
Mawardi, I. (2008). Upaya meningkatkan daya dukung sumberdaya air Pulau Jawa. Jurnal Teknologi Lingkungan, 9(1).
Nur, A. M. (2019). Nalisis Angkutan Sedimen Pada Danau Tempe Dari Sungai Walanae (Inlet) Kabupaten Soppengkabupaten Wajo.
Nurazzi, N. M., Asyraf, M. R. M., Khalina, A., Abdullah, N., Aisyah, H. A., Rafiqah, S. A., Sabaruddin, F. A., Kamarudin, S. H., Norrrahim, M. N. F., & Ilyas, R. A. (2021). A review on natural fiber reinforced polymer composite for bullet proof and ballistic applications. Polymers, 13(4), 646. https://doi.org/10.3390/polym13040646
Obiahu, O. H., & Elias, E. (2020). Effect of land use land cover changes on the rate of soil erosion in the Upper Eyiohia river catchment of Afikpo North Area, Nigeria. Environmental Challenges, 1. https://doi.org/10.1016/J.ENVC.2020.100002
Rakib, M. R., Mondol, M. A. H., Islam, A. R. M. T., & Rashid, M. B. (2023). Using river restoration model to control riverbank erosion in the Old Brahmaputra river of Bengal Basin, Bangladesh. Advances in Space Research. https://doi.org/10.1016/J.ASR.2023.11.033
Samekto, C., & Winata, E. S. (2010). Potensi sumber daya air di Indonesia. Seminar Nasional: Aplikasi Teknologi Penyediaan Air Bersih Untuk Kabupaten/Kota Di Indonesia, 1–20.
Soewaeli, A. S. (2014). Laju Sedimentasi di Hulu Danau Tempe. Jurnal Teknik Hidraulik, 5(1), 69–82.
Sunarta, N., Mahendra, M. S., Wiranatha, A. A. S., & Paturusi, S. A. (2015). Study of Land-Use Change on Tourism Area Using High Spatial Resolution of Remote Sensing Imagery. International Journal of Multidisciplinary Educational Research, 8(1), 17–31.
Syarif, A., Hediyati, W., & Armayani, R. R. (2023). The Role of Natural Resources and the Environment in Development. Jurnal Akuntansi, Manajemen Dan Bisnis Digital, 2(1), 7–12. https://doi.org/10.37676/jambd.v2i1.2732
Tuhepaly, F. S., Andawayanti, U., & Asmaranto, R. (2022). Analisa Laju Erosi dan Arahan Konservasi Lahan Berbasis ArcGIS pada DAS Parangjoho Kabupaten Wonogiri Jawa Tengah. Jurnal Teknologi Dan Rekayasa Sumber Daya Air, 2(1), 315–327.
Wischmeier, W. H., & Smith, D. D. (1978). Predicting rainfall erosion losses: a guide to conservation planning (Issue 537). Department of Agriculture, Science and Education Administration.
Zhu, B., Qin, J., Li, Y., Luo, G., Xu, Q., Liu, L., & Borthwick, A. G. L. (2022). Impact of water-sediment diversion and afflux on erosion-deposition in the Luoshan-Hankou reach, middle Yangtze River, China. Journal of Hydrology, 612. https://doi.org/10.1016/J.JHYDROL.2022.128110
Zhu, X., Gao, L., Wei, X., Li, T., & Shao, M. (2023). Progress and prospect of studies of Benggang erosion in southern China. Geoderma, 438. https://doi.org/10.1016/J.GEODERMA.2023.116656
Published
Issue
Section
License
Copyright (c) 2023 Firdazam, Sri Sangkawati, Dyah Ari Wulandari
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International. that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
