Abstract
Shannon diversity index and its evenness are used to analyze the difference of higher plants in broad-leaved Korean pine forest and secondary birch forest. The result show that the species diversity of higher plants in secondary birch forest is higher than that in broad-leaved Korean pine forest. Many of rare species existing in broad-leaved Korean pine forest are few or absent in secondary birch forest. The diversity of herbs both in broad-leaved Korean pine and in secondary birch forest is very rich and has a great change in different seasons.
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