Dataset for: Assessment of spatial stand structure of hemiboreal conifer dominated forests according to different levels of naturalness

Data from forest permanent sample plots in Estonia belonging to the Estonian Network of Forest Research Plots are re-measured in nature with an interval of five years. Different indices describing forest stand stuctures based on the neighbouring trees are calculkated.爱沙尼亚森林研究网点所拥有的森林永久样地数据，以五年为周期进行实地重新测量。基于相邻树木构建的森林群落结构指数得以计算。