Tingkat Bahaya Erosi dan Status Kesuburan Tanah di Wilayah Kerja PT Korintiga Hutani, Kalimantan Tengah

Abstract

Land cover changes alter surface run off rate and erosion rate as well. The land clearing, as a part of implementation of silvicultural system of forest plantation (THPB) remove all of vegetative covers which temporarily system reduce evapotranpiration and hence increase surface erosion. Surface erosion may erode soil particles, leach nutrients and decrease soil fertility. This research estimates and maps the rate of erosion, erosion hazard vulnerability, and soil fertility, and soil fertility status in forest plantation concession of PT Korintiga Hutani, Central Kalimantan. The result show that soil rate in Acacia mangium and Eucalyptus pellita plantations, DPSL (undisturbed area), harvesting area and skidding road are: 3.0, 3.2, 1.5,4.8, dan 5.0 5.0(ton/ha/year) respectively, and the soil fertility status of the area is low.