In 1996 and 1997, a carabid community and its fluctuation were studied by the pitfall method in the salinity transforming area in Quzhou County, Hebei Province, China.

• 1996与1997年在河北省曲周县盐渍化改造区，采用陷阱法调查了农田中步甲的物种组成与数量分布。