...： 水生群落： 乔木层(the canopy) 漂浮动物(neuston) 下木层(the understory tree) 浮游动物(plankton) 灌木层(the shrub layer) 游泳动物(nekton) 草本层(the herb layer) 底栖动物(benthos) 地被层(the forest floor) 附底动物(epifauna) 底内动物(infauna)...
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The abundance index of the tree layer was higher than the shrub layer.
郑州市不同类型公园绿地乔木物种丰富度稍大于灌木。
The analysis of height and base area classes of the shrub layer indicated mid-size individuals had conservative life strategies in this community, and R. simsii was a future declining population.
高度级和基径级分析表明群落内中等大小个体具有保守的生活史策略， 优势种杜鹃为远期衰退种群。
It is show that the medium artificial interferences to be helpful for herb layer renewing, but unhelpful for shrub layer.
说明人为中度干扰有利于草本层的更新，但是不利于灌木层的更新。
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