An assessment on the relationship between land surface temperature and normalized difference vegetation index

摘要

The present study aims to assess the trend of spatiotemporal relationship between land surface temperature (LST) and normalized difference vegetation index (NDVI) under different ranges of LST and NDVI values for Raipur City of India using fifteen cloud-free Landsat data sets of the pre-monsoon season from 2002 to 2018. LST maintains a strong negative relationship with NDVI for the whole of the study area. The relationship is quite insignificant for both the high LST zones and low LST zones. The results also indicate that under the positive NDVI values, the LST-NDVI relationships are strong to moderately negative, whereas it is positive and non-consistent under the negative values of NDVI. The results also show that the relationship is stronger in the earlier times, whereas it is weaker in recent times. An increase in heterogeneous landscape inside the city boundary strongly supports the changing pattern of LST-NDVI relationship.