森林植被中优势种的形成和分布规律及其应用

Formation,Distribution and Application of Dominant Species in Forest Vegetations.

一森林多是天然植被(人工林除外),它经历了千百年的演化,在改造环境和适应环境过程中,形成了物种与外界环境的高度吻合,最后形成了多种稳定的森林植被类型,因而研究森林植被中优势种的形成和分布规律,较之农田生态系统等人工植被具有更多的便利条件。森林树种的分布遵循着一定的规律。

Correlations between geographic distribution of plants and environment in eastern regions of China were discussed in the paper, Forest vegetations have a zonal distribution from north to south,which corresponds closely with the distribution of dominant species. The formation and distribution of dominant species ate determined by the high coincidence of plant biological habits with the envitonment, The presence of environmental g(?)adient and difference in plant biological and ecological habits is an important inside factor forming the geographic substitutional distribution of dominant species, These two concepts are very useful for the mapping of forest vegetations.