Abstract: Based on the matrix model and spatial pattern distance method, the structural and dynamical characteristics of the Pinus Kwangtungensis population, one of pioneer and constructive species in the forest succession series in Karst mountain of Maolan were studied. The results showed that:(1) The population was a senescent population. (2) The relation between the age (E) and the diameter at breast height (D) of the popuiation was E=59.968/(4.041-lnD). (3) The spatial pattern of the population was characterized by a iniform distribution of patches in which individuals were clumped. (4) Population donsities (DS) in each diameter class tended to change with diameter at breast height (DG), the relation was DS=1/(0.058+0.018e-DG). (5) The population is a pioneer population. At certain special habitats, the species, together with other species could form a relatively stable community. (6) To a certain extent, the distance method and matrix model can be effectively used in the analysis of the spatial pattern for subtropical forest species.