Analysis of correlation between vegetation cover density and urban index in Surakarta to support urban area sustainability

Abstract

The population of Surakarta has increased, putting pressure on vegetation and increasing demand for land availability. The population reached 500,173 people in 2010. The population trend is increasing every year so that the need for land as a place to live and living facilities also increases. This study aims to analyze the relationship between canopy density and the urban index in a 5 year period (2010 – 2015). The method used in assessing the density of the vegetation canopy is the calculation of the Normalized Difference Vegetation Index (NDVI) and the urban index. The calculation of the two index values uses Landsat 8 OLI satellite image data in 2015. The results show that the value of canopy density is inversely proportional to the value of urban index. The higher value of canopy density in Surakarta is followed by the lower value of urban index. The relationship between both is very close, marked by very high correlation and determination coefficient values, namely -0.98 and 0.97. Research on canopy density and urban index on a regular basis is expected to be part of the process of monitoring and evaluating urban area development and as input for local governments in the decision-making process.