Analysis of soil physical properties and infiltration rates for various landuses at Gunung Dahu Research Forest, Bogor District, West Java Province

Abstract

Assessment of the ability of the soil to absorb water can be known from the value of the infiltration rate. This study was conducted to examine the physical properties of soils and infiltration rates, analyze the relationship between physical properties of soils and their infiltration rates and determine the best infiltration models for various land uses. The data is processed using the Horton and Kostiakov infiltration model. Correlation analysis and R tests were performed to compare the field infiltration rate with the model prediction results. The results showed that the physical properties and infiltration capacity in the three land uses differed significantly on several parameters of physical properties such as drainage pore, permeability and infiltration with sequential values in the stands of S. leprosula, S. selanica and tourism objects were 3.21%, 2.29%, 3.51% for the parameters of fast drainage pores and 7.84%, 8.67%, 7.49% for slow drainage pore. Whereas the average permeability values are 1.37 cm / hour, 2.13 cm / hour, 3.39 cm / hour. Based on the results of field infiltration measurements, it was found that the S. selanica stands had the highest infiltration rate with a value of 15.5 cm / hour. The results of the correlation test and regression test between the field infiltration rate and the Horton infiltration model rate were not significantly different so that the Horton infiltration model can be used for the infiltration rate of soils in the Gunung Dahu Research Forest.