Power Recovery Support Tabunio Watershed Based on Analysis of Erosion Based on Geographic Information System in the Province of South Kalimantan

Abstract

Watershed Tabunio is one of the watershed in the Province of South Kalimantan which has an important role to support the environmental aspects and socio-economic aspects, it is caused by the upstream part of the watershed there are different types of land use can increase the rate of erosion, the flow surface, also on the middle and downstream utilized by the Tanah Laut for agriculture, plantation and fisheries. This study aims to determine the level of erosion, which is useful as a reference for determining the direction of land use for the carrying capacity of watershed restoration efforts Tabunio. This research method using a regional approach ecological watershed analysis process and presentation done spatially through Geographic Information Systems. The results showed that: a) Amount highest erosion 219,08 ton/ha/yr on Land Unit 3B (mining land use with a gradient of 3-8%), while the lowest amount of erosion 11,44 ton/ha/yr on Land Unit 8 (use secondary dry forest with gradients of 25-40%); b) The level of erosion is very light Danger land unit 8 on the use of secondary dry forest on the slope of 25-40%), while other land units at the rate of moderate to severe erosion. Recovery of the carrying capacity of the watershed Tabunio lower the rate of erosion through soil and water conservation vegetatively and civil engineering (mechanical)