The effects of species pool on community reestablishment were studied from a facet of predatory arthropod community. The results showed that the species pool was a resource of predators
which could contribute colonists to the rice field community during its reestablishing period. The distribution of the dominant predators
Ummeliata insecticeps
from species pool to rice field at the reestablishing period presented a step by step dynamic processes. In these processes
the field bund was not only an important component of species pool
but also a bridge for the predatory colonists from other sub species pools to pass through into rice field.