Relationship of butterfly diversity with human management in semi-natural grassland habitats: Search for the optimal management technique for conservation of rare species

从植被调查结果可以看出，维持草本植物种类对栖息地蝴蝶种类数量的影响，每年割草是最有效的，而割草清除凋落物的效果被认为是其作用机制之一。此外，研究还发现，在节约成本的情况下，可以通过对短草型群落的维护来实现植被多样性的维护。此外，从蝴蝶调查的结果可以看出，最受威胁物种的蝴蝶多样性和个体数量在管理-继续经营的地点最高。因此，人工管理(修剪)是保护蝴蝶多样性和濒危物种的关键。

From the results of vegetation survey, it was found that, to maintain the number of herbaceous plant species that influenced the number of butterfly species in the habitat, mowing every year is the most effective, and the effect of the litter removal through mowing was thought as a cause of the mechanism. Moreover, it was found that the maintenance of the diversity of vegetation under saving cost condition can be achieved through the maintenance of short-grass type community. In addition, from the results of butterfly survey, it was found that butterfly diversity and the number of individuals of most threatened species were highest in manage-continued sites. Thus, it is concluded that artificial management (mowing) is essential for conservation of butterfly diversity and threatened species.