福安三种不同茶园节肢动物群落的消长动态调查

根据对福建福安的3种不同茶园（天香有机茶园、北门高山茶园和溪柄平地茶园）的节肢动物群落消长动态调查。并经多样性分析，结果获知：福安3种茶园节肢动物群落的物种丰富度（s）和多样性指数（H）的大小顺序依次为：天香（S=19．64，H=2．537）〉北门（S=18．01，H=2．502）〉溪柄（S=17．59，H=2．297）；而均匀度指数的大小顺序是：北门（J=0．621）〉天香（J=0．595）〉溪柄（J=0．559）。表明植被比较丰富、人为干扰较少的茶园，节肢动物群落的物种丰富度、多样性指数和均匀度指数较高，害、益虫群落易于保持较好的平衡状态，有利于减少（或不使用）化学农药、发展绿色无公害茶叶生产。

A preliminary investigation on the arthropod community at three plantations in Fuan

A preliminary investigation on the artopod community was conducted at three different tea plantations （Tianxiang organ- ic tea plantation, Beimen higher altitude ecotype tea plantation and Xibing level land tea plantation） in Fu＇an from January to De- cember, 2006. The species richness indices （S） and diversity indices （ H） were ranked as ： Tianxiang （ S = 19. 64, H = 2. 537 ） 〉 Beimen （ S = 18. 01, H = 2. 502 ） 〉 Xibing （ S = 17.59, H = 2. 297 ） ; While the values of evenness indices （ J ） in the three tea planta- tions were： Beimen （ J = 0. 621 ） 〉 Tianxiang （ J = 0. 595 ） 〉 Xihing （ J = 0. 559 ）. These results indicated that the higher vegeta- tion protection and lower human - induced disturbance in the tea plantation would result in higher S,H and J values and help to keep balance between the communities of posts and beneficial insects. The organic and ecotypo tea plantations with higher S,H and J val- ues would increase bieeomunity stability and reduce chemical postcide usage, which was essential for the development of green food production.