Study on the thermal field change and affecting factors in urban areas of Hangzhou Tourism city

Qian Cheng; Xiuju Wu

doi:10.1117/12.754112

8 January 2008 Study on the thermal field change and affecting factors in urban areas of Hangzhou tourism city

Qian Cheng, Xiuju Wu

Proceedings Volume 6835, Infrared Materials, Devices, and Applications; 68351B (2008) https://doi.org/10.1117/12.754112
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

The thermal field of urban and suburban areas of Hangzhou tourism city was derived from TM ETM thermal infrared data and the spatial characteristics and changes were qualitatively analyzed. Water bodies have stable and uniform thermal field. The land surface temperature (LST), normalized difference vegetation index (NDVI), buildings distribution information and water body distribution information of two times TM Image in 1993 and 2003 were extracted and the influence factors of thermal field time-space characteristics were analyzed. The two times field of 1993 and 2003 become comparable with each other in thermal value. With the other bands of the same data set, the basic factors affecting the thermal field, namely buildings, greenbelts and water bodies, were identifled by visional interpretation or image processing. The LST, NDVI, buildings and water body distribution information were calculated for qualitative analysis of the basic affecting factors. The results show that the effects upon the thermal field gradually decrease in order of buildings, greenbelts and water bodies. So, in Hangzhou tourism city, many existing greenbelt and water bodies should be strictly protected and constructed.

Citation Download Citation

Qian Cheng and Xiuju Wu "Study on the thermal field change and affecting factors in urban areas of Hangzhou tourism city", Proc. SPIE 6835, Infrared Materials, Devices, and Applications, 68351B (8 January 2008); https://doi.org/10.1117/12.754112

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