Water Supplying Vegetation Index (WSVI) Analysis for Drought Rate Mapping in Bogor Regency

Abstract

Bogor dubbed as The City of Rain because of the high rainfall, Bogor is also a water conservation area. But in recent years in 2015, there was drought in several subdistricts in Bogor, consisting of 40 districts and distributed in 59 villages. Drought is closely related to the existing water reserves in the soil, good water to land as well as for everyday human needs. This research aims to map levels of drought that occurred in Bogor Regency from 2005 to 2015 using the Water Supplying Vegetation Index (WSVI). Research with Water Supplying Vegetation Index (WSVI) is to map the level of drought is still not much done in Indonesia. Methodology this research is to analyze the data of remote sensing technology and geographic information system (GIS) using the Water Supplying Vegetation Index (WSVI) prepared from Landsat 8 OLI/TIRS and Landsat 5 TM. Obtained that areas with a very high level of drought are Cariu Subdistrict, Babakanmadang Subdistrict, Jonggol Subdistrict, Ciampea Subdistrict, and Cibungbulang Subdistrict. The level of drought can be indicated by the level of humidity. If there is a decrease in vegetation, it can reduce the level of moisture which later can also increase the potential for drought.