Alternatif Teknik Konservasi Tanah dan Air untuk DAS Cilemer, Banten:

Evi Nursari; Latief Mahir Rachman; Dwi Putro Tejo Baskoro

doi:10.29244/jitl.20.1.33-39

Evi Nursari Program Studi Ilmu Pengelolaan Daerah Aliran Sungai (DAS), Sekolah Pascasarjana, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor, 16680
Latief Mahir Rachman Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian IPB, Institut Pertanian Bogor, Jl. Meranti Kampus IPB Dramaga, Bogor 16680
Dwi Putro Tejo Baskoro Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian IPB, Institut Pertanian Bogor, Jl. Meranti Kampus IPB Dramaga, Bogor 16680

DOI: https://doi.org/10.29244/jitl.20.1.33-39

Keywords: Agroforestry, Mini dam, Strip cropping, SWAT model

Abstract

Floods and droughts are routine problems that occur in Cilemer Watershed due to their decrease in quality. Application of Soil and Water Conservation (SWC) is one solution to improve the quality of Cilemer Watershed. A study aimed to simulate several SWC, obtain alternative of SWC and provides the best watershed management directions was carried out Cilemer Watershed. The research was carried out in several stages: (i) secondary data collection, (ii) field survey (primary data collection), (iii) data analysis, (iv) running SWAT model, (v) SWC simulation with SWAT model, (vi) watershed management scenarios, and (vii) arrangement of watershed management directives. The result shows that the application of SWC can improve watershed quality which is characterized by decreases Q_max/Q_min ratio and direct runoff but increases base flow and water yield. Application of mini traditional reservoir is the best watershed management scenario. This scenario is able to decrease the direct runoff, but increase base flow and water yield much greater than other scenarios. Application of mini traditional reservoir decreses direct runoff by 29.24%, where the coefficient of runoff decreases from 0.25 (existing condition) to 0.17. In addition, the scenario can also increase base flow by 46.00% (from 357.5 mm to 522.0 mm) and water yield by 3.99%. Water yield increase from 904.5 mm (existing condition) to 941.0 mm.

Downloads

Download data is not yet available.

References

Arsyad, S. 2006. Konservasi Tanah dan Air. Institut Pertanian Bogor Press, Bogor.

[Balitbang Pertanian] Balai Penelitian dan Pengembangan Pertanian. 2017. Teknologi Embung. http:// litbang.pertanian.go.id/tahukah-anda/156/ (diakses pada 10 Januari 2018).

[Dinas PUPR] Dinas Pekerjaan Umum dan Perumahan Rakyat Banten. 2015. Kajian evaluasi kinerja penyelesaian pengendalian banjir DAS Cilemer. Laporan Akhir. Dinas PUPR. Banten.

[Ditjen RLPS] Direktorat Jenderal Rehabilitasi Lahan dan Perhutanan Sosial. 2014. Peraturan Direktur Jenderal Rehabilitasi Lahan dan Perhutanan Sosial Nomor: P. 61 /Menhut-II/2014 tentang Pedoman Monitoring dan Evaluasi Daerah Aliran Sungai. Jakarta.

Djuwansah, M.R. 2006. Teknologi Indonesia. LIPI Press. Volume 29, No.2, Jakarta

Junaidi, E. dan S.D. Tarigan. 2012. Penggunaan model hidrologi SWAT (Soil and Water Assessment Tool) dalam pengelolaan DAS Cisadane. Jurnal Penelitian Hutan dan Konservasi Alam, 9:221-237.

Kustamar. 2013. Strategi pengendalian banjir berbasis konservasi sumber daya air di DAS Sungai Nangka, Lombok Timur. Konferensi Nasional Teknik Sipil 7, Surakarta 24-26 Oktober.

Moriasi, D.N., J.G. Arnold, M.W. Van Liew, R.L. Bingner, R.D. Harmel and T.L. Veith. 2007. Model evaluation guidelines for systematic quantification of accuracy in watershed simulation. American Society of Agricultural and Biological Engineers, 50:885-900.

[Pemprov Banten] Pemerintah Provinsi Banten. 2011. Peraturan Daerah No. 2 tentang Rencana Tata Ruang Wilayah Provinsi Banten Tahun 2010-2030. Pemerintah Provinsi Banten, Banten.

[PP] Peraturan Pemerintah Nomor 37 Tahun 2012. 2012. Pengelolaan Daerah Aliran Sungai. Kementerian Sekretariat Negara Republik Indonesia.

Rachmawati, I. 2012. Konservasi Tanah dan Air Secara Partisipatif dengan Pendekatan Agroforestri Lokal. Prosiding Semiloka. Surakarta: 27-28 Juni 2011.

Rejekiningrum, P. dan U. Haryati. 2002. Panen hujan dan aliran permukaan untuk meningkatkan produktivitas lahan kering di Nyatnyono, DAS Kaligarang, Semarang. J. Agromet., 1:61-75.

Ruijter, J. and F. Agus. 2004. Pengelolaan Daerah Aliran Sungai (DAS). World Agroforestry Center, Bogor.

Saleh, D.K., C.R. Kratzer, C.H. Green and D.G. Evans. 2009. Using the Soil and Water Assesment Tool (SWAT) to simulate runoff in Mustang Creek Basin, California. Scientific Investigation Report. US Department of Interior.

Santhi, C., J.G. Arnold, J.R. Williams, W.A. Dugas, R. Srinivasan and L.M. Hauck. 2001. Validation of the SWAT model on a large river basin with point and nonpoint sources. J. American Water Resour. Assoc., 37:1169-1188.

Slamet, N.S. dan Sarwono. 2016. Simulasi genangan banjir menggunakan data ASTER DEM pada aliran Sungai Cilemer. J. Sumber Daya Air, 12:61-67.

White, K.L. and I. Chaubey. 2005. Sensitivity analysis, calibration, and validation for a multisite and multivariable SWAT Model 1. JAWRA Journal of the American Water Resources Association, 41:1077-1089.

Alternative of Soil and Water Conservation Techniques in Cilemer Watershed, Banten