All the tree species in shrub layer were contagious distribution.
灌木层主要树种均呈集群分布。
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 community can be structurally divided into arborous layer, shrub layer and herbaceous layer.
群落可分为乔木层、灌木层、草本层和层间层。
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