000396 Chauhan D S;Dhanai C S;Singh B;Chauhan S; Todaria N P;Khalid M A (Forestry Dep, Post Box No. 59, HNB Garhwal Univ, Srinagar (Garhwal)-246 174, Email: firstname.lastname@example.org) : Regeneration and tree diversity in natural and planted forests in a Terai-Bhabhar forest in Katarniaghat Wildlife Sanctuary, India. Trop Ecol 2008, 49(1), 53-67.
Regeneration, tree diversity and floristic diversity of natural and planted tropical deciduous forests (dominated by Shorea robusta and Tectona grandis; Acacia catechu and Syzygium cumini, respectively) in western Uttar Pradesh, India were compared. Species diversity were (70 species in natural and 59 species in planted forests) as well as species evenness was higher in natural forests than in planted forests. Natural forest sites also had higher mature tree, pole, sapling and seedling densities compared with planted forests. In spite of differences in diversity, natural and planted forests did not differ strongly in species composition, fifty-six species occurred in both sites. This may reflect similar soil types but differences in soil moisture, organic carbon, available nitrogen, phosphorus, potassium and soil pH in natural and planted forests. Dominant families in both forest types are Fabaceae, Euphorbiaceae, Verbenaceae, Rubiaceae and Caesalpiniaceae (5 species each), followed by Moraceae, Mimosaceae and Combretaceae. Of the 126 species found in both sites, 32.5% showed good regeneration, 19.8% fair, 24.6% poor and 11.1% lacked regeneration. The remaining 11.9% of species were present as seedlings but not as adult individuals. Good quality timber species are not regenerating, with the exception of Shorea robusta, although mortality at seedling stage of this species is high. In all, our results suggest that species richness and diversity differed between natural forest and planted forest and regeneration of some important tree species also varied in natural and planted forests because of variation in their microclimate and edaphic characteristics. Moreover, these conditions indicate succession pattern and a potential for forestry plantations in dry forests. This study will help in the formulation of effective forest management and conservation strategies.
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