The genetic diversity of Dendrolimus tabulaeformis Tsai et Liu in forests of different stand types
不同林分类型下油松毛虫（Dendrolimus tabulaeformis Tsai et Liu）种群遗传多样性

Genetic diversity and genetic structure of Dendrolimus tabulaeformis populations in 1 Pinus tabulaeformis- Dahurian larch mixed forest and 2 Pinus tabulaeformis pure forests from Pingquan county were analyzed by using amplified fragment length polymorphism (AFLP),and the environmental conditions of 3 forest communities were also investigated.The results showed that the genetic diversity of populations in pure forests was higher than that in mixed forest.The important factor which influenced the genetic diversity of tabulaeformis in different pure forests was the growth status of forests.Mixed forest has obstructing effect on gene flow.The gene flow between populations was nagetively related with the species abundance of the forest.