Diversity analysis of harvesting on Pinus tabulaeformis inter forest grassland in Lingkong Mountain

By secret plots method, species composition, flora character, living form, growth form, water ecotype and species diversity of harvesting on Pinus tabulaeformis inter forest grassland in Lingkong Mountain were analy. The result indicated that: 1)There is a significant difference between clear cutting and intermediate cutting forest grassland on the geographical composition in the family and species level. The areal types of genera is largely affected by the harvesting time. 2)Therophytes more easily survive in the clear cutting than intermediate cutting forest grassland, cryptophytes may be more suitable growth under the woods environment. 3)The quantity and type of growth and water ecotype are more abundant of clear cutting forest grassland than intermediate cutting. 4)Except Carex lanceolata and Chrysanthemum chanetii, the dominant species in three plots are not the same; Due to the different harvesting time and the degree, species diversity of complex appear: plotⅠ＞plot Ⅲ＞plotⅡ.