The critical land in Komering watershed as a result of land use changes from 2000-2016 period

Abstract

Land use changes in a watershed could affect the ecological system, hydrological system and water quality, meanwhile land use changes study is needed to conduct especially in Komering watershed. Land use is the main factor that determines level of critical land, so the land use changes should correspond with the capability through which degraded land can be controlled. This study aimed to calculate land use/ land cover changes from 2000 to 2016 and generate critical land criterions. The objective of the study was to determine the physical and social factors that influence the degree of criticality land in watershed. Physical and social characteristics were measured including land use changes, solum, slopes, outcrop, and land productivity. This study applied supervised classification-maximum likelihood algorithm in ENVI 5.1 imagine to detect land use changes observed in Komering watershed, South Sumatera province, using multispectral satellite data obtained from Landsat 7 and Landsat 8 for the years 2000 to 2016 respectively. Determination of the level of critical land and land use conditions are executed through a spatial approach by utilizing Geographic Information Systems (GIS) and statistical analysis.