In the semi-arid area of western Liaoning Province and the semi-humid area of eastern of Liaoning Province

field observations showed that the temperature in a mining area was higher than CK in summer by 2℃ and 7℃ respectively

but below CK in the spring and the autumn. In the spring and autumn

the moisture content of the mining residue pile was 6% and 11% respectively

while the moisture content of the mining residue pile in the arid period was at wilting point or lower. Evaporation from mining area increased by 1-5mm compared with CK

but the humidity of mining area was much lower than CK.