1The Key Laboratory of Ecological Restoration in Hilly Areas, Forestry Department of Henan Province, Ping-ding-shan University, Ping-ding-shan, Henan Province 467000, China.
2Department of Environment and Geography, Ping-ding-shan, Henan Province 467000, China.
3Institute of Ecological Science and Technology, College of Life Sciences, Henan University, Kaifeng 475001, China.
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