Infiltrasi Pada Berbagai Tegakan Hutan Di Arboretum Universitas Lampung

Abstract

One of the important functions of the forest is as a provider of water through infiltration processes in the hydrological cycle. Green open space at Lampung University has a variety of tree stands, including Sengon Buto, Teak stands and mixed stands. The stand has the potential to increase infiltration and reduce run-off. The study aims to determine the rate of infiltration that occurs under a variety of stands by using Double Ring infiltrometer, and conducted during February - March 2015.The results showed a mix of stands have the highest infiltration rate of 56.60 cm/hour when compared with Sengon Buto, stands of teak, and free standing, each of which has a value of 51.60 cm/hour, 45.60 cm/hour, and 4.80 cm/hour. Based on the classification according Kohnke (1968), the infiltration rate contained under each of these stands belong to the classification very quickly, while on land classified as being free standing. Factors that affect the rate of infiltration directly that the initial soil water content, bulk density, soil porosity, and clay fractions. Tree density, density and canopy strata, as well as ground cover plants indirectly affects infiltration is to establish the physical properties of soil that can support increased infiltration.

Keywords: infiltration, double ring infiltrometer, the land under the stand