Branch Growth of Pinus sylvestris var. mongolica Plantation
Zhaogang Liu · Protection Forest Science and Technology · 2012
According to survey data of sample plot and analytic trees,taking living branchs in tree crown of Pinus sylvestris var. mongolica plantation as researching objects,branch growth of same tree with different ages,different size in same stand and in different stand were discussed.Result shows that: growth curve of branch length for individual tree shows S shape;current annual growth decrease with the increase of the tree age after reaching a maximum value;in the same stand,total growth of branch increase gradually with the increase of branch age;in the stands with the same density different ages,current annual growth of younger stand increase faster than that of older stand;in the stands with the same age different densities,total growth of branch current growth at the same stage for stand with smaller density are faster than that with bigger density.