Urban heat island effect of mining cities under mining disturbance: A case of Wu’an

Authors: Chengcheng Mao*,
Topics: Asia
Keywords: mining development; land disturbance; temperature; urban heat island effect
Session Type: Paper
Day: 4/7/2019
Start / End Time: 2:00 PM / 3:40 PM
Room: Marshall West, Marriott, Mezzanine Level
Presentation File: No File Uploaded

Improper excavation, cover occupation and occupation of land caused by mining development change the thermal properties of city’s underlying surface, which contributes to the formation of urban heat islands. This paper, firstly, estimates the spatial dynamics of land surface temperature(LST) by single-channel algorithm based on the Landsat TM thermal infrared (TIR) bands in 1998,2004,2010,2016 of Wu’an, and makes visual interpretation of mining boundary and partitions surface disturbance types of mining; secondly, analyzes the impact of mining on the urban heat island effect, the characteristics of temperature spatial distribution of different surface disturbance types and its contribution to the urban heat island(UHI)effect from time and space perspective with spatial analysis method. The results show that: (1) the LST of mining area is 5~7 ℃ higher than the city's average LST; (2) the average LST in slagheap and tailings pile are the highest, making the greatest contribution to the UHI effect; (3) the average LST of ore dressing area is in the middle level, (4) the average LST of mining pit and sinking area are the lowest, and the contribution value to the UHI effect is the least. The conclusions are that the average LST of Wu’an is on the rise with the mining scale expanding and the UHI effect is obvious and the LST of different surface disturbance types are obviously different.

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