PERENCAAAN PENGGUNAAN LAHAN DAN PENGARUHNYA TERHADAP SUMBERDAYA AIR DI DAS WAY BESAI - LAMPUNG
Abstrak: The problems on water
resource are the decreasing of water supply due to the impact of land use
changes. The population growth and the rising economy activity lead to the
increasing of water demands. Way Besai area of 44,720 hectares has an important
role in the provision of water resources. The aims of this research are: to
assess the water supply and demand, to assess the water balance and, to
formulate the best recommendation of land management planning. This research
was conducted in 2011. The SCS (Soil Conservation Service) model was applied to
determine land use planning scenarios and run-off prediction. The result shows
that the water demand in Way Besai Watershed is 441,450,909m3/year, while water
supply is 460,452,600 m3/year. Application of community forestry by applying
agroforestry system, implementation of forest rehabilitation on area outside
HKm permit, and conducting the change for coffee monoculture to mixed coffee
crop in the area outside the forest is considered the best scenario of land
management for Way Besai watershed. This scenario could produce 1,055.79
mm/years run-off, coefficient total runoff is 38.52%, water supply is
472,147,141 m3/years, storage is 7,911,616 m3/years and, can meet the of water
demand in the dry months at 58.48%.
Penulis: Ashadi Maryanto,
Kukuh Murtilaksano, Latief Mahir Rachman
Kode Jurnal: jpkehutanandd140009