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cyclical theory of regeneration
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     theory.
     这些概念和理论为不确定性信息理论奠定了基础.
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     The theory and the (?)
     这个理论本身和社会实践均有一个不断发展的过程。
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     Research into the Theory of Cyclical Economic Crisis
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The use of the method of substitution of space for time and the contiguous grid quadrate analysed the types of Parashorea chinensis population structure and the model of the succession of community. Parashorea chinensis is a main dominant and rare species of tropical. seasonal rainforest, in Bubeng region situated in south of Yunnan Province (21 °25' -21°38' N, 101°34' -101° 52' E). The results show that the types of the population structure are classified into the initial growing type (tpye I), the primary...

The use of the method of substitution of space for time and the contiguous grid quadrate analysed the types of Parashorea chinensis population structure and the model of the succession of community. Parashorea chinensis is a main dominant and rare species of tropical. seasonal rainforest, in Bubeng region situated in south of Yunnan Province (21 °25' -21°38' N, 101°34' -101° 52' E). The results show that the types of the population structure are classified into the initial growing type (tpye I), the primary type of the growing type (type Ⅱ), the growing type (tpey Ⅲ) and the stabilizing type (type Ⅳ). The model of the succession of community is in order of type Ⅰ-type Ⅱ-type Ⅲ-type Ⅳ and obeys the mosaic or cyclical theory of regeneration. The change rule of the companion species of Parashorea chinensis population is studied in the process of the succession of community. The suggestions on the conservation and management of the population and the reconstruction of the comunity are also made.

本文采用空间代替时间和相邻格子样方法阐明了望天树种群的结构类型和群落演替模式,结果表明其种群结构类型可分为初始增长型(类型I),增长型种群前期类型(类型Ⅱ),增长型种群(类型Ⅲ)和稳定性种群(类型Ⅳ).其群落演替模式遵从类型Ⅰ─类型Ⅱ─类型Ⅲ─类型Ⅳ模式,即具有更新镶嵌和循环的特点.探讨了群落演替过程中伴生种的变化规律,并就望天树种群的合理保护和群落重建提出了建议.

 
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