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Impacts of forest management on liana diversity and community structure in a tropical forest in Ghana:implications for conservation

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Journal of forestry Research 2016年第1期27卷 147-153页

作者： P.Addo-Fordjour Z.B.Rahmad A.M.S Shahrul M.Ashyraf School of Biological Sciences Universiti Sains Malaysia Department of Theoretical and Applied Biology College of Science Kwame Nkrumah University of Science and Technology (KNUST) The Centre for Marine and Coastal Studies (CEMACS) Universiti Sains Malaysia

We studied the impacts of liana cutting as a forest management tool on liana diversity （species richness, Shannon diversity index） and community structure （diam- eter distribution, basal area, species dominance） in the Asenanyo forest Reserve, Ghana. Two types of silvicul- turally treated forests were studied： Logging treated （LT） and Tropical Shelterwood system （TSS） treated forests. An untreated primary forest was included as a control, result- ing in three forest management systems. Lianas with diameter 〉2 cm were identified in ten 40 × 40 m2 plots within each management system. Liana cutting signifi- cantly reduced liana species richness, Shannon diversity index, and basal area in the LT forest after two decades. However, liana species richness and basal area werecomparable in the TSS treated and untreated forests, indi- cating significant recovery in the former after over six decades. Sφrensen similarity index of liana species com- position between the untreated forest and each of the treated forests was moderate. Our findings suggest that liana cutting most likely influenced the dominance of some liana species. In view of the adverse impact of blanket liana cutting on liana diversity, selective liana cutting is rec- ommended as a means of controlling liana numbers while maintaining liana diversity.

关键词： forest management system Liana diversity Liana basal area Silviculture Tropical forest biodiversity

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