Study on Diversity of Lawn Community under Arboreous Forest

Through field investigations,by use of the important value,diversity,evenness,richness and other indicators,studies on lawn community species diversity under the Poplar plantation,Larch principis plantation and Elm plantation have been done.The results show that:(1) in the life-functional group of Poplar plantation,shrubs are at the advantage position.In the life-functional group of Larch plantation and Elm plantation,the herbaceous perennials are at the advantage position,which can stabilize the community.(2) The Simpson index of Larch and Elm plantation(the difference is unremarkable) one of Poplar plantation.Shannon-Wiener index of Poplar plantation one of Larch and Elm plantation(the difference is unremarkable).(3)The difference of McIntosh index and Pielou index among the three kinds of arboreous forest is not very obvious.(4) The Patrick and Margalte index of Poplar plantation Larch plantation Elm plantation.