Informasi Detil Paper

Judul: Alternatif Pengelolaan Lahan Optimal untuk Konservasi Sumber Daya Air di Pulau Ambon
Penulis: A. Jacob  || email:
Jurnal: Budidaya Pertanian Vol. 9 no. 1 - hal. 7-15 Tahun 2013  [ Pertanian ]
Keywords:  Water resources, dusung (indigenous agroforestry system), erosion, sediment yield, income, sustainable.
Abstract: Land degradation on the upper stream area in Ambon Island has decreased the availability of fresh water for the peoples. For Ambon city in particular, available fresh water supporting only 19.14% of total population is due to the decreasing of water resources discharge. The decreasing of water resources discharge is likely due to the conversion of forest land to agriculture land, and resettlement in the upper stream. This research was carried out to solve the problem of water resources shortage in Ambon Island and Batugantung watershed, the areas which had been chosen as focus of observation. The objectives of this research were: 1) to evaluate the impact of land use changes on hydrological characteristics, erosion and sedimentation in Batugantung watershed; 2) to optimize present land use management for sustainable water resources in Batugantung watershed; and 3) to formulate alternative management of "dusun" land use for sustainable water resources in Ambon Island. The result of this research showed that the increasing density and coverage of vegetation can increase the sustainability of land and water resources. The increasing vegetation density in "dusun" land use can imitate the role of forest in sustaining watershed hydrological function, decreasing runoff controlling erosion as well as increasing farmer's income. By keeping at least 30 % forest in "dusun" land use management in Batugantung watershed, it can sustain water discharge about 209.42 liters.s-1, decrease erosion down to 55.23 ton.year-1 (36.62%) , and increase farmers income up to Rp. 20.34 million ha-1.year-1. By applying the result of this research to other watersheds in Ambon Island, it estimated the availability water resources about 1.67x106 This amount of water resources can fulfill present total requirement of fresh water for 380 thousand peoples in Ambon Island which is only 6.08 x 104
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