Geography Reference
In-Depth Information
urbanization in China. This study projected future land use change, and then
simulated the future regional temperature with WRF model. The influencing
mechanism of land use change on regional temperature was analyzed from the
perspective of land surface radiation budget and energy balance. The results
indicated that: (i) the monthly average temperature was obviously higher under
Rapid Economic Growth (REG) scenario than under Cooperate Environmental
Sustainability (CES) scenario in 2050, especially in the hottest month (July). (ii)
The extent of high-temperature regions is much wider under REG scenario than it
is under CES scenario in 2050. (iii) The land surface net radiation and latent heat
flux are two key factors through which land use change affects regional temper-
ature in Southern Jiangsu province, and latent heat flux plays a dominant role. (iv)
Land use change mainly influences land surface net radiation through altering land
surface albedo and emissivity.
Last, we further simulated climatic impacts of urban land expansion under
different urbanization patterns in Wuhan Metropolitan. We designed three
urbanization patterns scenarios, i.e., baseline scenario, centralized urbanization
scenarios, and decentralized urbanization scenarios. We applied Partitioned and
Asynchronous Cellular Automata Model to simulate spatial patterns of urban land
expansion under these scenarios. The results showed that decentralized urbani-
zation is a reasonable urbanization pattern to mitigate climate change in rapid
urbanization period in this study area. It can provide a scientific basis for the
rational choice of urban land expansion pattern in Wuhan Metropolitan in the
context of climate change, and also shed lights on choosing rational urban
development models for the other regions.
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