Study of relationship between urban land vegetation coverage and land surface temperature based on linear spectral mixture analysis
基于光谱混合分析的城市植被覆盖度与地表温度关系的研究

Urban vegetation is an important parameter in urban temperature and climate study. We used NDVI and VF(vegetation fraction) generated from spectral mixture analysis as urban vegetation cover indicator factors to study the relationship between vegetation cover and LST (land surface temperature). We selected a number of typical samples and studied the relationships between LST and VF and between LST and NDVI based on the linear fitting method. The results indicated that the vegetation coverage decreased linearly as the temperature increased and the relationship between VF and LST was better than that between NDVI and LST. Our results show that VF can be used as vegetation character indicator in urban LST study.