Evaluating the Scenario of Urban Blue-Green Space in Tezpur Town of Assam using Geo-Technical Approach

Abstract

Abstract Urban blue-green space (UBGS) is considered an effective way to mitigate Urban Heat Island (UHI) effects. UBGS not only cools the actual space but also influences the surrounding areas, this phenomenon is termed as urban blue-green space cooling effect. The intensity and density of cooling of the UBGS are one of vital issues of its cooling effects which can play a vital role for urban planners and designers to deal with UHI effects. The present study tries to anatomize the UBGS of urban Tezpur with the help of geo-technology based on the years 1993 and 2023. Land Surface Temperature (LST) and Normalized Difference Vegetation Index (NDVI) were taken into consideration for the ascertainment of UBGS and UHI. The correlation between LST and NDVI was determined with the aid of Simple Regression analysis. The NDVI values for the years 1993 and 2023 are − 0.32 to 0.70 and − 0.44 and 0.50 respectively. The LST values of the town for the year 1993 are 28.76 to 20.17 and for 2023 the LST value is 29.47 to 20.36. The NDWI value indicates that the water index increases in the water bodies from the year 1993 to 2023