Land Use Land Cover Change and Its' Influence on Land Surface Temperature: A Case Study of Franklin County, Ohio

Keywords: Urban heat stress, LST, NDVI, Sustainable development, Urban planning
Abstract Type: Poster Abstract

Abstract

In urban areas, heat stress harms human health and is expected to worsen in the future due to global warming. Land surface temperature (LST) helps detect urban heat stress by analyzing the exchange of composed material, energy balance, and information about the physical properties of the land surface, climatic conditions, and human activities affecting the environment. Normalized vegetation index (NDVI) is used in LST to identify long-term vegetation coverage variations, and changes in vegetation density are the main reason for the differences in LST. So, the study aims to identify the land surface temperature over four years, including the pandemic periods and the impact of NDVI. It identifies the reasons for rising temperatures through NDVI, which provides a scientific basis for sustainable urban planning and management. LST maintains a strong relationship with NDVI for the whole study area. The result also indicates that above mean and below mean LST have a strong to moderate association with the change in NDVI values. It is observed that the center of the county always has a high LST, though various location has temperature variation. The heterogeneous landscape around the center of a county may be the reason for and support the changing pattern of the LST-NDVI relationship. This changing relationship is also noticed before and during the pandemic. The outcome of this study provides some key measurement strategies to mitigate land surface temperature and provision of vegetation which is very helpful for an urban planner to ensure sustainable development.