LIU Baoyong, LI Yanyan, LIU Xinling, ZHANG Cheng, ZHAO Kai
(School of Environmental Science and Engineering, Liaoning Technical University, Fuxin, Liaoning Province 123000)

Abstract: This study monitored continuously at fixed points in junkyards of the Haizhou Surface Mine with different reclamation modes, including grassland, farmland, woodland of ulmus pumila, woodland of robinia pseudoacacia and mixture woodland of robinia pseudoacacia and ulmus pumila, collected microclimatic factors, such as light intensity, air temperature, air relative humidity, soil temperature at depths of 5 cm and 10 cm, and soil water contents in 0-10cm and 10-20cm layers, analyzed their daily variations, including daily ranges and daily averages, and compared them with those from the bare land. The results showed that all reclamation modes had functions of cooling temperatures, increasing humidity, retaining water and reducing daily ranges and daily averages. The abilities of different reclamation modes to regulate the microclimate showed a trend of mixture of robinia pseudoacacia and ulmus pumila > ulmus pumila > robinia pseudoacacia > farmland > grassland> bare land. In summary, the restoration of vegetation at the Haizhou Surface Mine can improve microclimate and other environment conditions remarkably.

Keywords: open-air junkyard; reclamation mode; microclimate; daily range; daily range

EARTH AND ENVIRONMENT Vol.47, No.1, Tot No.327, 2019, Page 88-96