Spatial Structure Characteristics of Quercus aliena var.acuteserrata Secondary Forest on South Slope of Qinling Mountains Research on Spatial Structure of Cunninghamia lanceolata Coppice Forest Analysis of Stand Spatial Structure of Cunninghamia lanceolata-Broadleaved Mixed Plantation The relationship between spatial structure and DBH of close-to-nature Phyllostachys edulis stands in Tianmu Mountain Spatial structural characteristics of natural Populus davidiana - Betula platyphylla secondary forest. Dynamic analysis of spatial structure in a close-to-nature Phyllostachys edulis stands