Quantification of land use/land cover changes in Pearl River Delta and its impact on regional climate in summer using numerical modeling |
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| Authors: | Wenshi Lin Lu Zhang Dongsheng Du Limin Yang Hui Lin Yuanzhi Zhang Jiangnan Li |
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| Institution: | (1) School of Environmental Sciences and Engineering, Sun Yat-sen University, 510275 Guangzhou, People’s Republic of China;(2) Institute of Space and Earth Information Science, The Chinese University of Hong Kong, Shatin, NT, Hong Kong;(3) State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 430079, Wuhan, People’s Republic of China |
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| Abstract: | This study quantified land use/land cover (LULC) changes in Pearl River Delta (PRD) of South China and its impact on regional
climate over the last two decades. The LULC change analyses were accomplished by applying a change detection method to a set
of Landsat imagery and ancillary data acquired from 1970s to 2000. The results indicate that the urban expansion is the prevailing
LULC change in the PRD. Impact of LULC change on regional climate was simulated by using a mesoscale climate model. Two different
land cover datasets circa 1990 and 2000 were input to the model to investigate the impact of urbanization on regional weather
and climate condition in summer 2005. The simulation results show that rapid urban expansion can substantially alter regional
climate conditions in the PRD region including monthly mean temperature, precipitation, moisture, and surface heat fluxes. |
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| Keywords: | Land use and land cover changes Regional climate Simulation The Pearl River Delta |
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