Effects on herb layer in plant community of tourism disturbance in Huangshan Mountain scenic area

Using the indices of diversity,richness and evenness,the species diversity of shrub and herb layers under forest communities in Liangshui Nature Reserve was studied in this paper.

Based on the field investigation and by using the indices of diversity,richness and evenness,this paper studied the species diversity of shrub and herb layers under forest communities in Huoshan Mountains of Shanxi Province.

Carbon Density of Herbage in Natural Secondary Pinus tabulaeformis Forest in Huoditang Zone,Qinling Moutains;

Estimation of carbon release from shrubs,herbages and litters in Daxing an Mountains by forest fires in 1980-1999.;

The herbage and vitamine toothpast is natural and environmental toothpaste.

Effects of thinning on species diversity and composition of understory herbs in a larch plantation.;

The plot experiment of 11 land use types include 3 herb land,3 shrub land,4 arbor land and 1 farmland at Ansai soil and water conservation research station in loess hilly region were observed.

families,161 genera and 531 species of herbaceous plants from Gansu have been sorted and the relation between species distribution and their latitude analysed.