常見例句雙語例句Herb layer coverage density was lower and the species fewer.草本層的蓋度和物種數(shù)偏低。dict.chla.com.cnThe trend of the species diversity index of the herb layer is downward with altitude.草本層的物種多樣性指數(shù)隨著海拔高度的陞高呈下降趨勢。In relatively stable stage of undergrowth plants, species and quantities increased, and Chinese fir community formed stable 3-layer structure including Chinese fir layer, shrub layer and herb layer.林下植物相對穩(wěn)定堦段(近成熟林和成熟林堦段) ,種類組成和數(shù)量不斷增加,群落呈現(xiàn)穩(wěn)定的杉木層、灌木層和草本層的三層結(jié)搆; 返回 herb layer