shrub layer

基本解释

Forest regeneration is lack of shrub layer and ground cover plant, and the ecosystem is under a very unstable state.
人工林中的物種多樣性變化多樣，明顯低於天然林，林分層次單一，更新不良，缺乏灌木層和地被植物，生態系統很不穩定。
The abundance index in shrub layer was general park (5.1) >community park (5) > special park (3.9) >coiled park (3.7) > town park (3.6).
灌木層的物種豐富度表現爲綜郃性公園（5.1）>社區公園（5）>專類公園（3.9）>帶狀公園（3.7）>街旁綠地（3.6）。
With the change of species diversity, the herb layer is the most sensitive layer along environmental gradient, followed by the shrub layer, and the tree layer is the least.
植物群落各層物種多樣性對環境梯度變化最敏感的是草本層，其次是灌木層，喬木層的敏感程度要小的多。