摘要
瓢虫科(Coccinellidae)昆虫大多为捕食性种类,其中一些种类是农区重要的天敌昆虫。针对华北冀中农林复合环境瓢虫种群在作物生长期的分布动态与空间格局、以及瓢虫优势种群对栖息地的选择趋向进行了研究,结果表明:(1)林带在作物生长早期是瓢虫赖以生存的主要生境,是后继作物环境瓢虫种群建立的"种库";(2)冀中农区瓢虫的优势种为龟纹瓢虫(Propylea japonica);(3)瓢虫种群随季节变化在各生境斑块间有明显的移动现象;(4)龟纹瓢虫种群在作物生长早期呈均匀或随机分布,在作物生长中后期呈密度依赖型聚集分布;(5)间作田成为作物生长后期瓢虫主要的聚集地显示在生境趋向不利时复杂的环境是理想的栖息场所。
Most coccinellids are predators,some of which are main natural enemies in farmland.The study is on the distribution dynamics,spatial pattern and habitat selection of coccinellids in crop growing period in the agro forestry system,in central Hebei province of North China.The results show that： firstly,the forest belt,which is the main habitat of coccinellids in the early period of crop growth,is a species pool for coccinellids in crop fields;secondly,Propylea japonica is the dominant species of coccinellids in the field;thirdly,coccinellids have apparent movement among the habitats when the season changes;fourthly,the distribution of coccinellids in the early period of crop growth is uniform or random pattern,and the distribution during the middle and late periods belongs to the pattern of aggregation that is density-dependent;fifthly,coccinellids are inclined to intercrop fields in the late period of crop growth,indicating that complex habitat will be better placed in adverse conditions.
出处
《生态学报》
CAS
CSCD
北大核心
2009年第10期5463-5470,共8页
Acta Ecologica Sinica
基金
国家科技支撑计划课题资助项目(2008BADA5B05)
关键词
瓢虫
种群
优势种
栖息地选择
空间格局
Coccinellidae
population
dominant species
habitat selection
spatial pattern
作者简介
通讯作者Corresponding author．E-mail：hkai_sino@sina．com
