KETERSEDIAAN RUANG TERBUKA HIJAU MENGGUNAKAN METODE NORMALIZED DIFFERENCE VEGETATION INDEX DI KABUPATEN GRESIK TAHUN 2021

Abstract

: Industrial estate development attracts a large number of workers from both inside and outside of Gresik Regency and requires land where industrial facilities are built. The increase in population in Gresik Regency also has an impact on the increasing need for residential land. Therefore we need an effort to monitor the availability of green open space to maintain environmental balance in Gresik Regency. This research is based on digital image interpretation using Quantum GIS software with the Normalized Difference Vegetation Index (NDVI) method. This research was conducted in all areas of Gresik Regency. The classification of land cover types is determined by determining the maximum and minimum threshold values through the threshold test. The results of this study indicate that there has been a decrease in the area of green open space within a span of 5 years. In 2021, the area of green open space is only 160.15 km² or 13% of the total area of Gresik Regency. To meet the minimum stipulation on the proportion of green open space, Gresik Regency requires an additional area of 17% or 202.93 km².