Gao Fei, Zhou Guo-na, Yuan Sheng-liang, Gao Bao-jia
Agricultural University of Hebei, Baoding 071000, Hebei, China.
Ying Yong Sheng Tai Xue Bao. 2008 Dec;19(12):2723-30.
In order to reveal the correlations between the arthropod communities in two sub-systems (jujube yard and grain field) of jujube-grain intercropping system, an investigation was conducted on the composition and time series dynamics of the communities in the two sub-systems. A total of 14 936 arthropod individuals belonging to 14 orders and 96 families were found, among which, 5992 individuals of 14 orders and 82 families were in jujube yard and 8971 of 14 orders and 80 families were in grain field, and some differences were observed in the arthropod community structure between the two sub-systems. The time series dynamics of the arthropod communities could be divided into four periods, according to the optimal cut-apart of time series, i.e., decline period in grain field sub-system, species number increase period in whole system, steady period in whole system, and decline period in whole system. The primary natural enemies in the system showed a characteristic of transferring between the two sub-systems in the four periods, and the parasitical natural enemies in a sub-system could impact the pest insects in another sub-system. The species transferring and mutual effect of the arthropod communities between the two sub-systems could benefit the stability of the jujube-grain intercropping system, and the capability of the system in controlling pest insects.
为揭示枣粮间作系统中两个子系统（枣园和粮田）节肢动物群落之间的相关性，对这两个子系统中节肢动物群落的组成和时间序列动态进行了调查。共发现14936头节肢动物个体，分属14目96科，其中枣园有14目82科5992头，粮田有14目80科8971头，两个子系统的节肢动物群落结构存在一定差异。根据时间序列的最优分割，节肢动物群落的时间序列动态可分为4个时期，即粮田子系统衰退期、全系统物种数增加期、全系统稳定期和全系统衰退期。系统中的主要天敌在这4个时期呈现出在两个子系统间转移的特征，一个子系统中的寄生性天敌可对另一个子系统中的害虫产生影响。两个子系统间节肢动物群落的物种转移和相互作用有利于枣粮间作系统的稳定及其控害能力。
