Abstract: The contiguous grid quadrats were applied to sampling for field data, V / m ratio t-test, negative binomial distribution, David and Moores7 index, index of mean crowding and index of patchiness, index of dispersion and intensity of pattern have been used to analyse the zonation pat-tern and stratification pattern of Shorea chinensis population, which is one of the main dominant and rare species of tropical seasonal rain forest, in Bubeng region situated in the south of Yunnan province (about N 21 ° 25'-21 ° 28 ', E 101 ° 34 '-101 ° 52 '). The results indicate the zonation pattern of the population is of the contagious distribution, and the degree of congrega-tion, the scale of pattern patch and the intensity of pattern are^small-big-smalP model with the increase of the population age. The stritification pattern of the population is of the contagious ditribution-random-uniform distribution from sapling to adult tree. The contagious indexes in re-lation to density are linear reduction with the increase of the population age, but the contagious indexes in irrelation to density are ^small-big-smalr^model and the changes are less.

Key words: Shorea chinensis (= Parashorea chinensis)

摘要： 采用相邻格子样方法取样数据，应用方差/均值比率法，负二项分布法，David和Moore丛生指数,Lloyd平均拥挤指标、聚块指标和分散指标，Hill格局强度分析等方法探讨了我国热带珍稀濒危及标志种望天树(Shorea chinensis)种群的带状分布和分层格局，结果表明其带状格局为群聚格局，但群聚程度、聚块尺度和格局强度随年龄增大为“小-大-小”的趋势变化。种群分层格局从幼灌层到乔A层为“群聚-随机-均匀”模式，与密度相关的群聚强度指标随年龄增大而线性下降，与密度无关的群聚强度指标呈“小-大-小”变化模式，但变幅较小。

关键词: 望天树, 种群, 带状格局, 分层格局