三种类型草地植物种间关联的测定与比较

Determination and Comparison of Plant Species Interconnections in Three Types of Grass land.

植物种间关联的研究,对于进一步确定植物种间关系、揭示群落演替过程中植物种间替代关系的机制、草场退化和人工草地产量下降的原因都有重要意义。本文之所以选取三种类型的草地进行研究主要是考虑到由于一个群落从初期阶段到顶极阶段的演替需要十几年甚至几十年的时间,这样对于演替不同阶段植物种间关联的观测是困难的。

The approach of space-for-time substitution is used to determine the plant species interconnections in different successional stages of Aneurolepidium chinense grassland in Inner Mongolia. The artificial, degenerated and natural grassland of Aneurotepidium chinense respectively represent the primary stage, mid-stage and climax of the succession process. Plant species interconnections are shown to be the most significant in its primary stage, then the midstage, and the most insignificant in climax stage.The fluctuations of interconnection among some species are also analysed.