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Effect of reduced impact logging to species composition and forest structure in tropical rain forest, North Borneo

By: Muhdi, Elias, Daniel Murdiyarso, Juang Rata Matangaran

Key Words: Reduced impact logging, Conventional logging, Species composition, Tropical rain forest

Int. J. Biosci. 9(5), 28-34, November 2016.

DOI: http://dx.doi.org/10.12692/ijb/9.5.28-34

Abstract

Forest structure and species composition is the use of sustainable forest management, such as logging methods and underplanting. Diversity of species in tropical forest is very large and complex, its existence influence each other and interact with a genetic characters and the ecosystem. Measuring the impact of logging techniques of reduced impact logging (RIL) and conventional logging (CL) performed on the logging block of the current year. Plots consisted of CL and RIL block that the size of plot 15 ha, respectivly. Before logging in the conventional logging (CL), red meranti (Shorea spp.) were the dominant species at the tree stage (IVI=15.66-32.83 %) and after logging red meranti (Shorea spp) were dominant species (IVI=19.51-38.58%). Before logging in the reduced impact logging (RIL), red meranti (Shorea spp.) were the dominant species at the tree stage (IVI=26.84-30.87 %) and after logging red meranti (Shorea spp) were dominant species (IVI=18.27-19.71%).Species diversity index (H’) before logging is greater than after logging. This indicates that logging activities contribute to changes in species diversity. Species composition responded differently caused by logging technique.

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