Effect of Land Cover Change on Discharge in Pangkajene Watershed
Abstract
Land cover changes that occur impact on the hydrological conditions in a watershed. The hydrological condition referred to as the output quantity of the watershed is discharge which describes the quantity of water. This study aims to determine the effect of land cover change on streamflow in the Pangkajene Watershed. The results showed that there was a decrease in average peak discharge in January of 213.73 m3/s to 95.79 m3/s in the same month in 2017. Land cover changes that occurred were mixed dryland farming of bushes into paddy fields, shrubs, and settlements while forests was experienced a slight change to open land by 0.69 ha. The increase in the area of paddy fields and shrubs as large as it causes the average discharge to decrease. A decrease in the average monthly discharge in the Pangkajene watershed due to rainfall on its way into the rice irrigation water experienced process begin from, is accommodated, evaporates, so that the flow up to the river becomes small. In addition, rainfall in 2009 which is the input of the Pangkajene watershed is higher than in 2017.
References
Howard, J.A. 1996. Penginderaan Jauh untuk Sumberdaya Hutan. Gadjah Mada University Press. Yogyakarta.
Kementerian Kehutanan. 2014. Peraturan Menteri Kehutanan Republik Indonesia Nomor: P.61/Menhut-II/2014 Tentang Monitoring dan Evaluasi Pengelolaan Daerah Aliran Sungai. Kementerian Kehutanan RI Jakarta.
Mubarok,Z., Anwar, S., Murtilaksono,K., Wahjunie,E.D. 2014. Skenario Perubahan Penggunaan Lahan di DAS Way Betung Sebuah Simulasi Karakteristik Hidrologi Menggunakan Model SWAT. Prosiding Seminar Nasional Pengelolaan DAS Terpadu untuk Kesejahteraan Masyarakat UNIBRAW Malang ISBN 978-602-99218-8-5.
Muchtar, A, dan Abdullah, N. 2007. Analisis Faktor-faktor yang Mempengaruhi Debit Sungai Mamasa. Jurnal Hutan dan Masyarakat, Vol. 2, No. 1.
Muma,M., Assani,A,A., Landry, R., Quessy, JF., Mesfiuoi,M. 2011. Effect of the Change from Forest to Agriculture Land Use on The Spatial Variability of Summer Extreme Daily Flow Characteristics in Southern Quebec (Canada). Journal of Hydrology 407 153-163 http://dx.doi.org/10.1016/j.jhydroi.2011.07.020.
Peraturan Direktur Jenderal Planologi Kehutanan. 2015. Pedoman Pemantauan Penutupan Lahan. Kementerian Lingkungan Hidup dan Kehutanan. Jakarta.
Permatasari, R. 2017. Pengaruh Perubahan Penggunaan Lahan terhadap Rezim Hidrologi
DAS (Studi Kasus: DAS Komering). Jurnal Teknik Sipil ITB Vol.24 No.1 April. ISSN 0853-2982.
Republik Indonesia. 1999. Undang-Undang Republik Indonesia Nomor 41 Tahun 1999 Tentang Kehutanan. Lembaran Negara Republik Indonesia Tahun 1999 Nomor 167. Sekretariat Negara. Jakarta.
Ronalyw. 2016. Bendung Tabo-Tabo Dioperasikan Lagi dalam
http://beritakotamakassar.fajar.co.id/berita/2016/02/25/bendung-tabo-tabo-dioperasikan-lagi/. Diakases pada Tanggal 21 Januari 2018. Makassar.
Setioputro, S. 2016. Indentifikasi Kualitas Sub DAS Cisadane Hulu dengan Parameter Penutupan Lahan dan Debit Air. Skripsi. Bogor: Institut Pertanian Bogor.
Sutanto. 1994. Penginderaan Jauh, Jilid 2. Yogyakarta: Gadjah Mada University Press.
Verrina, G,P., Anugrah, D,D., Sarino. 2013. Analisa Runoff pada Sub DAS Lematang Hulu. Jurnal Teknik Sipil dan Lingkungan Vol.1 No.1, Desember 2013. ISSN: 2335-374X.
