Shi Guanglu, Zhao Lilin, Liu Suqi, Cao Hui, Li Shiyou, Pike Bruce
Shanxi Agricultural University, Taigu, China.
Ying Yong Sheng Tai Xue Bao. 2006 Jan;17(1):80-6.
An investigation on the insects in the jujube ecosystem in Taigu District of Shanxi Province, Northern China showed that more species and individual numbers of pest, predatory and neutral insects were found on the tree than on the ground. The ratio of the species and individual numbers of predatory and neutral insects to those of pest insects fluctuated from year to year. Homoptera, Coleoptera and Lepidoptera were the dominant groups of pest insects, while those of predatory insects were Coleopteran, Hemiptera, Diptera and Hymenoptera. The vertical distribution of the community structure of the same or different subcommunity was different in different seasons, as was the case of the same or different subcommunity in the same season. The diversity indexes of pest, predatory and neutral insects fluctuated with seasons, and the populations of predatory and neutral insects had a significant correlation (r = 0.9833, P <0.05) with the fluctuation of pest insects. There was also a significant correlation between the pest, predatory and neutral insects in different stratums of tree canopy, especially in the middle stratum of tree canopy (r = 0.9887, P <0.01).
对中国北方山西省太谷区枣生态系统中的昆虫进行的一项调查显示，树上发现的害虫、捕食性昆虫和中性昆虫的种类和个体数量比地面上更多。捕食性昆虫和中性昆虫的种类及个体数量与害虫的种类及个体数量之比逐年波动。同翅目、鞘翅目和鳞翅目是害虫的优势类群，而捕食性昆虫的优势类群是鞘翅目、半翅目、双翅目和膜翅目。同一或不同亚群落的群落结构垂直分布在不同季节有所不同，同一季节的同一或不同亚群落也是如此。害虫、捕食性昆虫和中性昆虫的多样性指数随季节波动，捕食性昆虫和中性昆虫的种群数量与害虫数量的波动具有显著相关性（r = 0.9833，P <0.05）。树冠不同层次的害虫、捕食性昆虫和中性昆虫之间也存在显著相关性，尤其是在树冠中层（r = 0.9887，P <0.01）。
