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Assessing the effect of land use/land cover change on the change of urban heat island intensity

Author:
J. F. He   J. Y. Liu   D. F. Zhuang   W. Zhang   M. L. Liu  


Journal:
Theoretical and Applied Climatology


Issue Date:
2007


Abstract(summary):

Due to rapid economic development, China has experienced one of the greatest rates of change in land use/land cover during the last two decades. This change is mainly urban expansion and cultivated land reduction in urban growth regions, both of which play an important role in regional climate change. In this paper, the variation of the urban heat island (UHI) caused by urbanization has been evaluated with an analysis of land use change in China. First, meteorological observation stations were grouped by different land cover types (dry land, paddy field, forest, grassland, water field, urban, rural inhabitable area, industrial and mineral land, and waste land) throughout China. These stations were subdivided into urban and non-urban classes. Then, a new method was proposed to determine the UHI intensity from the difference between the observed and the interpolated air temperature of urban type weather stations. The results indicate that the trends of UHI intensity in different land use change regions are spatially correlated with regional land use and its change pattern. During 1991-2000, the estimated UHI intensity has increased by 0.11 degrees C per decade in the spring and has fluctuated in other seasons throughout China resulting from land use change.


Page:
217-226


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