亚热带常绿阔叶林林分结构对物种组成变异的驱动作用: 从局域到区域尺度

杨欣, 姚志良, 王彬, 温韩东, 邓云, 曹敏, 张志明, 谭正洪, 林露湘

Driving effects of forest stand structure of a subtropical evergreen broad-leaved forest on species composition variation: From local to regional scales

Xin Yang, Zhiliang Yao, Bin Wang, Handong Wen, Yun Deng, Min Cao, Zhiming Zhang, Zhenghong Tan, Luxiang Lin

图3 通过rdaca.hp解析由哀牢山亚热带中山湿性常绿阔叶林20 ha森林动态样地划分成的20个1 ha样地空间结构、环境因子和林分结构各变量的相对重要性。FS_PC1、FS_PC2分别代表林分结构的第一主成分和第二主成分; Env_PC1、Env_PC2、Env_PC3分别代表地形环境因子的第一至第三主成分; MEM3、MEM4、MEM5、MEM6、MEM8、x、y代表空间结构, 其中, x和y为空间结构的线性趋势。

Fig. 3 The relative importance of individual variables of spatial structures, environmental factors and forest stand structures in 20 1-ha plots divided by the 20 ha subtropical mid-mountain moist evergreen broad-leaved forest dynamics plot in Ailao Mountains by rdacca.hp. FS_PC1 and FS_PC2 represent the first and the second principal components of forest stand structures, respectively. Env_PC1, Env_PC2 and Env_PC3 represent the first, the second and the third principal components of topographic environmental factors, respectively. MEM3, MEM4, MEM5, MEM6, MEM8, x and y represent the spatial structures, where, x and y are linear trends of spatial structures.