Altitudinal Changes of Forest Community Types and Species Diversity in Kanasi Tourism Region

Using typical transect method,this study was carried out to research forest community structure and altitudinal changes of forest community structure and species diversity in Kanasi tourism region.The results indicated: ①Larix sibirica Ldb.was the main species in forest community,altitudinal pattern of vegetation was obvious.There was an evident replacing phenomenon between Picea obovata Ldb.and Pinus sibirica Ldb.along altitudinal gradient.②As for tree,Patrick(D)richness index and Shannon Wiener(H′) diversity index were decreasing along altitudinal gradient,but Pielou(Jsw) evenness did not present evident trend along altitudinal gradient.What is more,α diversity indexes of herb were variable,having no distinct trend.③β diversity of tree was ascending along altitudinal gradient,but there was visible lower value in transition region of forest community.Furthermore,β diversity of herb also did not present evident trend along altitudinal gradient.