Results from a principle component analysis (PCA) performed on land use classes and forest configuration metricsa.

aVariables were measured within a 1-km radius of each study site and included the percent cover of forest (%Forest), agriculture (%Agriculture), areas dominated by early-successional vegetation (%Early-successional) and human-disturbed and/or developed land (%Developed); and forest configuration metrics, total patches (# Forest patches) and mean patch size (Mean patch).Results from a principle component analysis (PCA) performed on land use classes and forest configuration metricsa.本研究在每个研究站点周边1公里半径范围内测定相关变量，涵盖的变量包括森林覆盖百分比（%Forest）、农业用地覆盖百分比（%Agriculture）、早期演替植被主导区域占比（%Early-successional）、受人类干扰和/或开发用地占比（%Developed），以及森林格局指标：森林总斑块数（# Forest patches）与平均斑块面积（Mean patch）。针对土地利用类别与森林格局指标开展的主成分分析（PCA）所得结果。