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采用陷阱法对北京密云县西田各庄南部农业景观中玉米地、花生地、果园及半自然林地4种典型生境中的步甲群落进行调查分析.结果表明:果园步甲群落α多样性最高,花生地最低,林地与玉米地居中,且二者无显著差异;林地、花生地及果园的步甲群落结构明显不同,但均与玉米地的步甲群落结构有不同程度的相似性.果园维持着较多的捕食性步甲和兼食性步甲个体数;且不同生境间捕食性步甲的物种周转率与兼食性步甲的差异更明显.低集约化的果园生境可能较半自然生境林地维持更高的步甲群落α多样性,但多样化的景观组成有利于维持步甲群落及捕食性步甲较高的β多样性.重视景观多样性和低集约化农田生境的保护对保护农业景观步甲群落多样性和实现其害虫控制功能具有重要的意义.
The trapping method was used to investigate the Chinese steppe community in four typical habitats of corn, peanut, orchard and semi-natural woodland in the southern agricultural landscape of West Tianzhuang in Miyun County, Beijing.The results showed that the α diversity of the steppe community was the highest, The peanut land was the lowest, and the forest land and the corn land were the same, and there was no significant difference between the two. The Chinese steppe community structure in the woodland, peanut land and orchard was significantly different, More predatory caesarean section and step-by-step cassiosum individuals, and the differences in species turnover and etiologic carabid between predatory carabidae in different habitats are more significant than in semi-natural habitat Maintaining a higher α diversity of the caecium community, however, the diversified landscape composition is conducive to maintaining the β diversity of cape community and predatory carabinie .It emphasizes the diversity of landscape and the protection of low intensive agro-habitat. The diversity of landscape beetles and their pest control functions are of great significance.