In order to understand the growth and distribution conditions of the herbage in different foresttypes of Ziwuling Mountains

we conducted an investigation on the species composition

structural characteristics

and differences under three forest types of Quercus liaotungensis

Pinus tabulaeformis

and Pinusshenkanensis and compared those items with those on south-faced slope . Our results show that the total number of species presenting under the three forest types and on south-faced slope ranges from 21 to 34. The species diversity of herbaceous plants under P . tabulaef ormis forest is close to that on south-faced slope . The height

degree of coverage

and herbaceous biodiversity of herbaceous plants in the three forest types are significantly different to those on south-faced slope

but no difference is found among the three forest types.The order of species

by the correlation of herbaceous under the three forest types and on south-faced slope

is Q . liaotungensis >species on south-faced slope >P . tabulaef ormis >P . shenkanensis. Generally speaking

closing environmental closure leads to lower density and less biodiversity of herbaceous in forest . However

density and species biodiversity of herbaceous under well conserved Q. liaotungensis and artificial P.