In order to evaluate the strengths and weaknesses situation of trees in the forest stand more scientificly and accurately, a new method for trees classification was provided. It took the Cyclobalanopsis glauca ( Thunb.) Oerst. secondary forest in Lutou forest farm as an example, put forward tree classification index concept, screened out neighborhood comparison, healthy index, spatial density index, mingling index, angle competition index to build tree classification index measuring model based on AHP. As a result, the tree classification index measuring model was TCI=0.368 3(1-U)+0.279 2H+0.147 9(1-UCI)+0.136 4(1-D)+0.068 2M. According to the method of equal space, the tree classification index value of each level was worked out: dominant tree(0.75~1], subdominant tree(0.5~0.75], intermediate tree(0.25~0.5], suppressed tree(0~0.25]. The mean value of tree classification index of the two samples in Lutou forest farm were calculated as 0.602 1 and 0.583 4, respectively, using the tree classification index model. It showed that growth condition of the forest stand was good since the majority trees in two samples were dominant and subdominant trees.
secondary forestforest tree classification indexneighborhood comparisonLutou state-owned forest farm
国家科技期刊平台
NSTL
维普
万方数据
