This paper takes Dongguan with rapid urbanization development as a typical example. It uses Landsat TM/ETM+ remote sensing images as data sources to calculate the land surface temperature in the study area. After having the land surface temperature normalized we analyzed the spatial pattern changes of heat environment. What's more, we introduced built-up density and main roads to explore the mechanism of heat environment spatial pattern and find the relationship between these factors and urban heat pattern. The results showed that the spatial pattern of urban thermal environment in Dongguan changed a lot in the past 15 years. With the expansion of urban areas, heat island changed from a diffuse heat spot to a strip or zonal shape. Relativity analysis showed that the urban heat spatial pattern in Donguang is closely related with built-up density. Urban heat effect became feeble as the distance far from the main roads.
CHEN Ming-hui, CHEN Ying-biao, GUO Guan-huan, FENG Zhi-xin
. Temporal and spatial changes of urban thermal environment and driving mechanism in Dongguan City[J]. GEOGRAPHICAL RESEARCH, 2011
, 30(8)
: 1431
-1438
.
DOI: 10.11821/yj2011080009
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