Abstract
Annual changes of the community structure of ground insects were investigated using pitfall traps at the isolated small stands in the suburbs of Tokyo and the results were analyzed by detrended correspondence analysis. Grassland species decreased as increasing of stands age and forest species appeared from 10 years after establishment of the stands. However, the community structure was thought to become simple because forest insects could not easily immigrate due to non-forest areas between isolated stands. According to the similar investigations at green lands such as grassland and hedge, the community structure was also thought to become simple at the sites of poor undergrowth and litter due to management. Therefore, not managed isolated stands were thought to be important for ground insects as habitats in the suburbs. Moreover, to make ground insect species diverse, continuous maintenance of green lands such as forest and grassland was considered to be important.
