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根据所调查样方的树种综合优势比值,对广东西部(粤西)廉江谢鞋山次生季雨林最重要的三个建群树种,进行了空间格局分析。分析方法采用了Poisson分布、负两项分布、Neyman分布的频次比较模型和聚合度指数测定以及Taylor指数和 Iwao’s 方程模拟。结果表明这三个建群种均符合聚集分布。荔枝(Litchi chinensis )和山杜英(Elaeocarpus sylvestris)两种群有基本型聚集分布的特点并表现出个体间的聚集现象。橄榄(Canarium album)有可能随着密度的增大而趋于均匀分布。树种的空间分布格局依赖于其繁殖特性之外,还受该次生季雨林保护的影响。这些主要建群种的空间格局表明进行该林区保护的迫切性。
According to the comprehensive superiority ratio of tree species in the sampled quadrats, the spatial pattern analysis of the three most important species in the secondary seasonal monsoon forest of Xie Xie Mountain in Western Guangdong (western Guangdong Province) was conducted. The analysis method uses the Poisson distribution, the negative two distributions, the Neyman distribution frequency comparison model and the degree of polymerization index as well as the Taylor index and the Iwao’s equation simulation. The results showed that these three constructive species are in line with the aggregation distribution. The two populations of Litchi chinensis and Elaeocarpus sylvestris have the basic aggregation distribution and show the aggregation among individuals. It is possible that Canarium albums tend to be evenly distributed as density increases. The spatial distribution pattern of tree species depends on their reproductive characteristics and is also affected by the protection of the secondary monsoon forest. The spatial pattern of these major colonies shows the urgency of protecting the forest.