Treelayer coverage is one of the primary numerical characteristics of forest community.
乔木层盖度是森林群落的主要数量特征之一。
2
The mean ash content increased in an order from treelayer, shrub layer to herb layer, while those of GCV and AFCV decreased.
从乔木层、灌木层到草本层，灰分含量依次增加，GCV和AFCV则依次降低。
3
The species component, density and index of crown cover in the treelayer effect on distribution of illumination and under plants in the plant community.