锥栗林节肢动物群落的时间动态

Time dynamics of arthropod community in Castanea henryi forest

依据对福建省建瓯市20块锥栗林试验标准地节肢动物群落l a的系统调查,分别对锥栗林林冠层和下木层的节肢动物类群的物种数、个体数量、物种多样性指数、均匀度指数、优势集中性指数以及各功能集团的个体数量的时间动态进行了分析.时间格局最优分割结果表明,锥栗林林冠层和下木层节肢动物类群均分割成3个阶段,即3-4月、5-9月、10-11月.多元逐步回归分析结果表明,锥栗林林冠层和下木层节肢动物类群中的物种数、均匀度指数与物种多样性指数呈正相关性,而林冠层的优势集中性指数与物种多样性指数呈负相关性.

Based on a systematic investigation at 20 representative sampling sites in Castanea henryi forest in Jianou,Fujian,China for 1 year,the time dynamics of the species number,individual number,species diversity,evenness,dominant concentration of the canopy and underlayer arthropod groups and individual number of all function groups were analyzed.The results showed that the time pattern of the canopy and underlayer arthropod groups were divided to 3 stages,that is March to April,May to September,October to November by the optimal partition methods.The pertinency between the diversity and the richness,evenness,dominant concentration were analyzed by multiple regression step by step,the results showed that the species richness,evenness and species diversity were positive correlation of the canopy and underlayer arthropod groups,the dominant concentration and species diversity were negative correlation.