耐荫树种

耐荫树种优势度趋于降低，阳性树种优势度逐年增加。

Abundance of shade-tolerant trees tends to decrease and that of intolerant trees increases year by year .

选用群落高度、显著度、萌生株比例、生物量和耐荫树种比例5个指标对群落退化进行定量评价。

Five indexes as height , dominance , percentage of asexual individual , biomass , and percentage of shade tolerant for evaluating community degradation were selected .

林分进界株数严重不足，进界的主要树种是云冷杉、阔叶树和红松，以耐荫树种为主。

The number of ingrowth was very small in all stands , the ingrowth mainly occurred for shade-tolerant tree species such as Spruce , Fir , Korean Pine and broad-leaved tree species .

八角为耐荫性树种，应选择温暖、湿润、较阴蔽的环境和肥沃、排水良好的酸性土壤种植。

As Illicium verum is shade bearer , warm , damp , dark environment , and well-discharge of water , and fertile & acid soil should be welcome and chosen .