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用林分解析方法获得马尾松天然纯林林分标准地资料，研究了１４年生马尾松天然林的林分结构和生长、分化规律。结果表明，林分个体间竞争激烈，林分结构不良，小径级林木比例过大。个体差异大，最大者为最小者的３３．２倍，被压木严重畸形，存在明显枯损现象，枯损率达１３．７６％。有限营养空间内容纳超量个体，限制了林分生长的潜力。生长过程分析表明，林分４—６年间个体竞争特别激烈，因而也是施行密度调控技术的关键时期。
The standard data of Pinus massoniana plantations were obtained by using stand analysis method. The stand structure, growth and differentiation of 14-year old Pinus massoniana natural forests were studied. The results showed that the individuals in the stand were highly competitive, the stand structure was not good, and the proportion of the small-diameter forest was too large. Individual differences, the largest were 33.2 times the smallest, severe compression wood deformity, there is a clear phenomenon of withered, withered loss rate of 13.76%. Within limited nutrition space to accommodate excess individuals, limiting the potential for stand growth. The analysis of the growth process shows that the individual competition is particularly intense during the period of 4 to 6 years in the forest and therefore is also a key period for the implementation of density control technology.