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Simulation of the impact of land use change on surface run-off in Karst Leang Lonrong Sub-Watershed Wahyullah Wahyullah; Hendrayanto Hendrayanto; Yuli Suharnoto
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 13 No 2 (2023): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.13.2.313-326

Abstract

Estimation of surface run-off in karst watersheds has not been widely carried out and the estimation method is generally developed for non-karst watersheds. This study aims to analyze the accuracy of estimation of river discharge at the outlet of the Karst Biringere Sub-watershed using the modified Soil Conservation Service Curve Number (SCS-CN) method and analyzed the impact of land use change on river discharge at the outlet of the Karst Biringere Sub-watershed. Modification of the SCS-CN method in estimating direct flow at the outlet of the Beringere Sub-watershed is influenced by the similarity of rainfall and direct flow fluctuation of river discharge. The modified SCS-CN method provides satisfactory direct flow estimation when rainfall with observed direct flow of river discharge forms a linear relationship with a strong correlation. Changes in land use with reduced forest cover into mining areas result in increased run-off and reduced storage, the larger the forest land becomes mining areas, the greater the increase in run-off and reduction in storage. Reclamation of the former mining area to be a forest reduces run-off and increases water storage.
Strategi Pengelolaan Lanskap Berkelanjutan di Danau Lido Cigombong, Bogor Muhammad Haekal Syawie; Hadi Susilo Arifin; Yuli Suharnoto
Jurnal Lanskap Indonesia Vol. 15 No. 2 (2023): Jurnal Lanskap Indonesia
Publisher : http://arl.faperta.ipb.ac.id/

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jli.v15i2.42782

Abstract

The utilization of Lido Lake will continue to grow, particularly in the tourism aspect, strenghtened by the 2016-2036 Bogor Regency Spatial Planning (RTRW) and the Government Regulation No. 69 of 2021 which have stipulated it to be a tourism area and a special economic tourism area, respectively. However, at the same time increased garbage accumulation at its lakeside, wastes entering the waters and sedimentation have become prominent problems. This study aimed to develop a management strategy so that the sustainability of Lido Lake can be maintained facing development changes. The SWOT method was used to identify and to analyze the existing internal and external factors in Lido lake including lake's biophysical conditions and preferences/participation of people around the lake. The evaluation of the internal and external factors placed Lido lake in quadrant V forming a strategy to sustain and to maintain. The SWOT matrix recommend 6 management strategies i.e. (1) developing ecotourism as the basis for tourism, (2) implementing and managing environmentally friendly cage fish farming systems, (3) controlling sedimentation in lake waters, (4) Making building design directions on the lakeside, (5) managing the causes of degradation in lake water catchment areas, (6) providing facilities and infrastructure for waste control.