The relationship between the urban thermal field and factors of afforestation and construction in Harbing is established by using TM thermal image and ground data. It's clear that afforestation can weaken the urban thermal radiation field and construction can strengthen it, especially in summers. According to balancing calculation, it's proper that the minimum and the ideal value of the city's percentage of green coverage are 27% and 40% respectively. And the building density should be controlled below 27% ...

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