Landsat 8 Image-Based Analysis of the Urban Heat Island Characteristics in Jinan, China

摘要

With the acceleration of urbanization and industrialization, the urban heat island (URI) effect, which has raised increasing concern. The goal of this study was to make a detailed analysis of the genesis of the Jinan urban heat island, which may be used to reduce surface temperatures in the city of Jinan. Using the Landsat OLI/TIRS acquired on July 11, 2014 and September 2, 2016, the land surface temperatures (LST) for Jinan city of China were retrieved. The urban biophysical descriptors, including the modified normalized difference water index (MNDWI), soil-adjusted vegetation index (SAVI) and impervious surface area (ISA) were retrieved, and the relationship between LST and urban biophysical properties was further studied. The results showed that LST in the built-up area of Jinan city were higher than in the adjacent suburbs, and the urban heat island effect was significant. Additionally, LST were negatively correlated to the indices MNDWI and SAVI but positively correlated to the index ISA. These results could provide useful guidelines for the city of Jinan city urban construction and urban planning.