Kemampuan Hutan Untuk Pelestarian Air Tanah di Berbagai Tutupan Lahan (Studi Kasus di Arboretum Arsitektur Lanskap IPB, Bogor)

Abstract

Urban forest are such green open space component that function as environment support in case water structuring arrangement. Land water absorption parameter definition could determined by infiltration rate. Aim of this research was to measured water infiltration rate in several type of land closing which include in Arboretum Landscape. This research implemented on December 2013 - April 2014. Based on infiltration rate curve, could be seen that infiltration rate will began to saturated at hour 0.9 by highest infiltration rate 36 mm/hour, it was dense vegetation land. Land physical characteristic influence infiltration rate were bulk density, porosity and land organic material. Highest bulk density value on open land was 1.38 g/c m3 and lowest on roadside land about 0.98 g/cm3. Highest porositas value on manure land was about 63.04% and lowest porositas value on open land was about 47.7%. Highest organic material on dense vegetation land about 16.60% and lowest organic material value was about 2.20%.