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Etfects of Selection l-ogging on Rainforest Productivity

By Jerome K. Vanclay


An analysis of data from 212 permanenl sample plots provided no evidence of any decline in rainforest productivity after tltrcc cycles of selection logging in the tropical rainforests of north Queensland. Relative productivity was determined as the diflercltcc b"t*..n observed diamete. increments and increments predicted from a diameter increment function which incorporated trec sizc, stand density and site quality. Analyses of variance and regression analyses revealed no significant decline in productivity aftct repeated harvesting. There is evidence to support the assertion that if any permanent productivity decline exists, it dôes not excccd six per cent per harvest

Year: 2014
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