福州郊区稻田节肢动物群落的结构和动态

The Structure and Dynamics of Arthropod Communities in Rice Fields in the Suburbs of Fuzhou

利用1986年4-11月在福建省福州市的田间调查资料。研究稻田节肢动物群落的生境分化和时间动态.结果表明:(1)由于生态环境、稻田类型及稻季不同,稻田节肢动物群落的种类组成、个体数量、Simpson 的优势集中性指数有差异;(2)在水稻生长发育的不同时期,稻田节肢动物的主要种类以及 Berger-Parker 的优势度不一样,群落的物种数目及常见害虫的种群数量也有变化.

This paper deals with the studies on the habitat differentiation and seasonal dy- namics of arthropod communities in rice fields by using the data obtained from the suburbs of Fuzhou from April to November,1986.The results showed:(1)the number of species and in- dividuals,the Simpson's index values of dominant concentration(C)of the communities are different owing to different habitats,fields and rice types;and(2)the dominant species and the Berger—parker's index values of dominant degree(Ⅰ),the species number of the communi- ties,and the population size of common species were fluctuated with the different growing stages of rice.