M. Yanuar J. Purwanto

PENGEMBANGAN KEBIJAKAN PENGELOLAAN AIR BAKU BERKELANJUTAN DI SUB DAS KONAWEHA KABUPATEN KONAWE SULAWESI TENGGARA

Penurunan ketersediaan air akibat perubahan penggunaan lahan telah terjadi di Kabupaten Konawe, sedangkan permintaan air cenderung meningkat. Dari segi keberlanjutan penyediaan air, hal ini cukup mengkhawatirkan. Penelitian ini bertujuan menganalisis: (1) tingkat keberlanjutan, (2) faktor penting yang memengaruhi keberlanjutan, (3) peran kelembagaan dalam pengelolaan air baku berkelanjutan di Sub DAS Konaweha. Hasil analisis Multi Dimensional Scalling (MDS) dengan Rap-Konawe menunjukkan bahwa status keberlanjutan pengelolaan air baku di Sub DAS Konaweha kurang berkelanjutan dengan indeks 41,40%. Nilai indeks berkelanjutan diukur pada 5 dimensi yaitu ekologi, ekonomi, sosial, teknologi dan kelembagaan dengan nilai indeks masing - masing secara berurutan 52,36%, 36,93%, 34,16%, 35,39% dan 35,39%. Hasil analisis Interpretative Structural Modelling (ISM) menunjukkan tiga unsur yang perlu diperhatikan yaitu kendala, kebutuhan, dan lembaga. Kendala penting yang dihadapi adalah penurunan fungsi daerah tangkapan air karena berkurangnya vegetasi dan kurangnya koordinasi pengelolaan sumber daya air antara para pemangku kepentingan. Kebutuhan program yang harus menjadi fokus perhatian adalah peningkatan pengetauan dan keterampilan personil kantor pemerintah, serta peningkatan kesadaran stakeholder . Adapun lembaga yang menjadi faktor kunci untk program ini adalah BPDAS Sampara dan Dinas Kehutanan Kabupaten Konawe.

STATUS KUALITAS AIR DAN UPAYA KONSERVASI SUMBERDAYA LAHAN DI DAS CITARUM HULU, KABUPATEN BANDUNG

Relationships between water quality and catchment characteristics are examined for rivers in the Upper sub Watersheds of Citarum using a GIS-based approach. The study aimed to analyze the relationship of type of land cover and water quality parameters in response to surface runoff. The multiple linear regression model was evaluated to demonstrate the relationship between the both variables. Stepwise multiple linear regressions demonstrated that agriculture and settlement land cover type was able to describe the overall water quality status. Physico-chemicals of water quality parameters could be sufficiently predicted using one land use/land cover type. Stepwise regression results showed that paddy field were significantly related to pH, DO, BOD and COD.Forestrelated significantly to TDS and temperature in dry periods. Water quality parameters over the period of the rainy seasons including agricultural related significantly to temperature, BOD, COD, TP and H2S. Nitrite and TDS had relationship with settlement and paddy field had relationship with pH and TSS. Moreover, only forest had relationship with DO in wet periods. The overall statistically relationships were significant in p < 0.05. This research provides perspective relationship between water quality and land cover types which is an important factor for the water resources conservation in the management plans.