摘要
Abstract
Growth, stem volume and dry biomass of Phoebe bournei were studied in Pinus massoniana+P. bournei mixed plantation (P. massoniana :P. bournei= 1:1 and 2:1, respectively) and thinned P. massoniana plantation (25%and 40%thinning intensity) in Ninghua National Forest Farm, Fujian Province. The results showed that the survival rate of P. bournei at the first year after planting was higher in underplanted treatment than that in mixed plantation. From the 1st to the 4th year after planting, tree height, diameter at breast height (DBH) and stem volume of P. bournei were no significant difference in underplanted and mixed stands. 7-9 years after planting, the tree height, DBH, individual stem volume and biomass of P. bournei were significantly higher in the mixed plantation with1:1 mixed proportion than that in the 2:1 mixed plantation. These variables were significantly higher in the 40%thinning treatment than that in the 25%thinning treatment. Overall, the growth and biomass of P. bournei were significantly higher in the mixed plantation than that in the underplanted treatment after seven years. Therefore, P. bournei could grow better in the P. massoniana+P. bournei mixed plantation than under the P. massoniana plantation. It is important to determine the appropriate mixed proportions and forest management (such as thinning) for P. bournei plantation.关键词
闽楠/混交林/林下套种/生长/生物量Key words
Phoebe bournei/mixed plantation/underplanting/growth/biomass分类
农业科技
