School of Forestry;
Northeast Forestry University;
Harbin 15004;
People’s Republic of China;
Key Laboratory of Ecological Restoration in Hilly Areas;
Pingdingshan University;
Pingdingshan 467000;
People’s Republic of China;
State Key Laboratory of Vegetation and Environment Change;
Institute of Botany;
Chinese Academy of Sciences;
Beijing 100093;
People’s Republic of China;
Spatial distributions; Aggregation intensity; Species functional trait; Secondary warm-temperate deciduous broad-leaved forest;