Analisis Keberadaan Ruang Terbuka Hijau dan Suhu Permukaan di Kota Binjai Provinsi Sumatera Utara

Abstract

The rapid urban development has led to land use changes, including the reduction of Green Open Space (RTH). Binjai City has experienced population growth and infrastructure development, resulting in an increase in surface temperature due to the urban heat island (UHI) phenomenon. This study aims to analyze the existence of RTH and its relationship with surface temperature in Binjai City. Data were obtained using Landsat satellite imagery to determine the Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST). The results indicate significant changes in vegetation density from 2004 to 2024, with an increase in non-vegetated areas and a decline in moderately to densely vegetated areas. Pearson correlation analysis shows a negative relationship between NDVI and LST, indicating that higher vegetation density correlates with lower surface temperatures. These findings highlight the importance of maintaining and expanding RTH as a climate change mitigation strategy and for improving environmental quality in Binjai City.