杉木三年桐混交林分结构研究

对5年生杉木三年桐混交林的林分结构进行调查研究,结果表明:杉木与三年桐混交能加快林分郁闭,有效地利用林地空间,从而大大地提高林分的光能利用率,5年生混交林总生物量是杉木纯林的1 92倍,混交林中杉木的干材生物量比杉木纯林增加72 6%,有效地提高木材产量和经济效益。

Studies on Stand Structure of Mixed Model for Chinese Fir and Tung Oil Tree

In this paper,research into stand structure on five-aged Chinese fir mixed with Tung oil trees shows the mixed stand grows closed faster and open space can be utilized more efficiently,which enhances the using rate of the sunliglit,As a result,its gross biomass on five-aged mixed forests is 1.92 times as much as,its dryweight biomass in the mixed forests is 72.6% more than that in the pure Chinese fir forests.So the research proves it can increase the wood output and economic benefit effectively.