草本优势种会抑止其它草本植物种类的进入，延缓弃耕地演替速度。
The superior species of herb were able to hold back the entering for other herbs and delayed the succession velocity of old-field.
各层优势种平均干重热值和去灰分热值都表现为：层间藤本>乔木1层>乔木2层>灌木层>草本层。
The GCV and ash-free caloric value (AFCV) decreased in the following order: lianas, tree layer 1, tree layer 2, shrub layer and herb layer. The AFCV differed among various components.
农田杂草由开垦初期以多年生草本植物占优势到开垦多年以后以一年生草本植物占优势。
In the reclaimed farmland, the weeds dominated by perennial herbs in the initial stage of reclamation are replaced by the weeds dominated by annual herbs after reclamation for some years.
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