Population structure of tree species in forests as an indicator of regeneration and future stability

Proceedings / Indian Academy of Sciences - Tập 96 - Trang 443-455 - 1986
S P Singh1, J C Tewari1, S Yadav1, P K Ralhan1
1Department of Botany, Kumaun University, Naini Tal, India

Tóm tắt

The size class distribution in tree populations will continue to be used for analysing the regeneration of tree species and successional patterns in forest communities at extensive levels. However, information regarding the approximate estimates of lifetime expectancy (residence time) for each of the size classes, viz seedlings, saplings and trees, and the estimates of rate of net gain for them (population divided by residence time) can considerably enhance our understanding of the regeneration trends of species. It is shown that several population structures, based on size class distribution may indicate declining population trend, although the population, as indicated by rate of net gain parameter, in fact may foretell future expansion or stability. It appears that high species richness and high percentages of species with poor regeneration are interrelated with each other.

Tài liệu tham khảo

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