Undergrowth vegetation的意思|示意

The undergrowth vegetation biomass in Korean pine plantations declined over years and was less than that of the mixed forest of Korean pine and secondary natural forest at all age stages.

林下植被生物量随林龄增长而降低，所有年龄阶段红松人工林林下植被生物量都低于红松混交林和天然次生林。

Thus, growth and changes in undergrowth vegetation after fire were jointly affected by fire and topographic factors with fire being conducive to regeneration of undergrowth vegetation partly.

火烧后林下植被的生长与变化，受林火因子与地形因子的共同影响，且火烧在一定程度上有利于林下植被的生长。

The density of Taiwania flousiana plantation should be adjusted to accelerate the growth of undergrowth vegetation, thus improving soil physical and chemical properties and increasing soil fertility.

秃杉人工林生长过程中要经常调整密度以促进林下植被生长，从而改善土壤理化状况，提高土壤肥力。