Analysis of Biogeophysics Characteristics and Discharge of Lompo Riaja Atas River and Lompo Riaja Bawah River, Ralla Sub Watershed

Usman  Arsyad; Beta  Putranto; Nur  Aeni; Wahyudi  Isnan; Hasnawir

doi:10.18330/jwallacea.2019.vol8iss1pp27-38

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Usman Arsyad Fakultas Kehutanan Universitas Hasanuddin
Beta Putranto Fakultas Kehutanan Universitas Hasanuddin
Nur Aeni Fakultas Kehutanan Universitas Hasanuddin
Wahyudi Isnan
yudix_19@yahoo.com
Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Makassar
Hasnawir Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Makassar

Vol. 8 No. 1 (2019)

Articles

March 29, 2019

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The biogeophysical characteristics of watersheds have an important role as a determinant of the river discharge amount in the watershed. Various watershed problems such as flood and drought related to river discharge require data and information. The importance of this data and information will determine a better watershed management plan. The issue of flooding and drought are the important issues in Ralla subwatershed, Souht Sulawesi Province. This study aims to describe the biogeophysical characteristics and the discharge of Lompo Riaja Atas and Lompo Riaja Bawah Rivers in Ralla subwatershed, Lisu Watershed. This research was conducted in from November 2016 to August 2017. Primary data collection was done through river discharge and precipitation measurements during 34 days of observation. Secondary data obtained from government or related agencies such as geological data obtained from Geological map of the Ujung Pandang sheet 1982, the slope data from Aster DEM, land type from RePPProt 1987, land cover data from google earth image 2015. A quantitative descriptive method was used to analyze the data obtained. The results showed that the Lompo Riaja Atas and Lompo Riaja Bawah rivers have relatively similar discharge fluctuation, although they have a different amount of discharge. River discharge of both rivers is more influenced by rainfall compared to biogeophysical conditions such as geology, topography, soil type, watershed area, watershed shape, river length and order, gradient, flow pattern, flow density,and land cover.

Arsyad, U. ., Putranto, B. ., Aeni, N. ., Isnan, W. ., & Hasnawir. (2019). Analysis of Biogeophysics Characteristics and Discharge of Lompo Riaja Atas River and Lompo Riaja Bawah River, Ralla Sub Watershed. Jurnal Penelitian Kehutanan Wallacea, 8(1), 27-38. https://doi.org/10.18330/jwallacea.2019.vol8iss1pp27-38

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