Evaluation of land use to critican Batang Kuranji watershed in Padang City

Abstract

This study aims to 1). find out the land use index 2). analyze the suitability of land use based on land capability, 3). How is the spread and extent of critical watersheds 4). calculate the level of erosion hazard in the Padang City Kuranji Watershed. This research uses quantitative descriptive method. Quantitative analysis is done by classifying, scoring, and weighting with existing scales and criteria. Samples are taken based on land units obtained from overlapping maps of landform units, slopes, land use, land and geology. The results showed 1). there are three classes of land use index, namely good class 11,375 km2 (97.23%), medium class 37.50 km2 (43.91%) and bad class 214.22km2 (16.71%). 2). suitability of land use consists of two classes, namely: Appropriate class 19, 099 km2 (85.97%) and class not appropriate 3.13 km2 (14.3%). 3) there are three classes to watershed criterion namely uncritical class (70.94%), critical potential class (24.54%) and critical class (4.53). 4). erosion danger level there are five classes: Very light (68.64%), Lightweight class (9.75%), Moderate class (14.68%), Weight class (4.79%) and Very Heavy class (2, 14%).