成熟群落

原因在于，随着群落进化，群落内乔木层垂直结构逐渐发展成熟，群落郁闭度增高引起林下光照不足使得草本层生长受到阻碍，群落地上生物量总体降低。

The reason is that , with the evolution of communities , communities within the tree layer of the vertical structure of the progressive development of mature , higher density communities caused lack of light which makes herb layer growth hampered , community to reduce the overall aboveground biomass .

发育成熟的交错群落具有最高的植物多样性，且高于相对应的典型森林群落。

The mature community processes the highest diversity in the ecotone . It is also higher than that in the corresponding typical forest community .

在固体发酵的成熟阶段，微生物群落逐渐趋于稳定。

In the mature stage of fermentation , the microbial community gradually tended to be stable .

构建一个科学完善，成熟合理的植物群落，在净化空气，调节气候，增强绿地景观效果，保护和美化环境，维持城市生态平衡等方面都起着非常重要的作用。

It will play avery important role if we build a scientific and rational , sound and mature plantcommunities , in air purification , climate regulation , and enhance the effect of greenlandscape , protect and beautify the environment , maintain urban ecological balance .