ANALISIS PERSEBARAN DAN KERAPATAN VEGETASI DI KABUPATEN BANTUL TAHUN 2013 DAN 2020 MENGGUNAKAN TEKNIK NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)

Abstract

Bantul Regency is included in the administrative area of the Special Region of Yogyakarta and is directly adjacent to the city of Yogyakarta, which is the capital of the province and the center of educational, economic, health, and cultural activities. The development of the region is one of the impacts of the development of the city center such as the increase in built-up land and the decrease in green open land. This study aims to: 1) determine the distribution and level of vegetation density of Bantul Regency in 2013 and 2020 with NDVI calculation, and 2) map the distribution and density of vegetation in Bantul Regency in 2013 and 2020. The data used in this research are Landsat 8 OLI/TIRS level 2 images in 2013 and 2020. The results of this study showed that green land in Bantul Regency reduced the density marked by a decrease in NDVI value in 2020, namely -0.09 - 0.636, and dominated by low grade vegetation density. While the NDVI value of Bantul Regency in 2013 ranged between -0.146 - 0.716 and was dominated by high class density. These values indicate a decrease in vegetation density in Bantul Regency. Interpretation of Landsat images in 2013 and 2020, NDVI transformation obtained 5 classification classes of vegetation density, which changes in vegetation density in each class. Areas that act as growth poles have the least vegetation because they experience a lot of land conversion to meet the needs of activities in various sectors of life.