Relationship between economic value and species diversity of timber resources in a Hill Forest, Pahang, Malaysia.
2007
Faridah Hanum, I. | Awang Noor, A.G. | Tuan Marina, T.I.
Timber resource is a major component of tropical forest and its economic value varies under various forest ecosystems. In hill dipterocarp forest, the relationship between economic value and species diversity is not known. Literature on past studies have focused on a particular aspect, either species diversity and richness or economic value. This paper attempts to examine the realtionship between economic value and species diversity of a hill dipterocarp forest in Tranum Forest Reserve, Raub Pahang. Trees of one cm and above in five, one-hectare plots measuring 100m x 100m were inventiried. In each plot, 100 subplot or quadrats measuring 10m x 10m were established to conduct 100 percent trees inventory. The parameters measured were species and diameter at greast height. Data collected were analyzed to calculate economic value of commercial trees using the residual value technique. Data on logging cost were collected from logging surveys conducted in various districts in Pahang and log prices were collected based on information provided by Pahang State Forestry Department. Species diversity (Alpha, Shannon and Simpsons) and richness estimators was estimated using program Estimates based on 20 randomized quadrat orders for the data set and all sample examined based on the data collected using regression analysis. The study also examines the relationship of economic value and species diversity for different size of quadrats. Based on the result of the study, future suggestions for future research are highlighted.
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