大气二氧化碳浓度升高对植物昆虫相互关系的影响

Effects of elevated carbon dioxide on insect-plant interactions.

综述了CO2 浓度升高对植物与昆虫相互关系影响的研究结果。大量研究表明 ,高浓度CO2 对植物生理生化活动有显著的影响 ,植物营养物质的变化对植食性昆虫亦产生不同程度的影响 ,高浓度CO2 条件对咀嚼式口器昆虫的取食、生长发育和生殖有不同程度的不良影响 ,昆虫为了获得足够的氮素营养而增加取食强度和时间 ,从而更易于受到天敌的攻击 ,这些昆虫的生长率、繁殖和生存率有下降的趋势 ;而对刺吸韧皮部汁液的昆虫来说 ,多引起种群数量增加或无显著影响。并对研究中存在的问题进行了分析 ,提出了今后研究的方向。

Advances in rese arch on effects of elevated carbon dioxide on insect-plant interactions were reviewed in this paper.It has been well demonstrated that plants exhibited physiological and biochemical alterations under elevated CO_2 conditions,which in turn affect phytophagous insects at different levels.The feeding pattern,growth and development of chewing herbivores were all influenced by elevated CO_2,who increased feeding intensity and time for enough nitrogen nutrition,which in turn made them more subjected to their natural enemies and decreased their growth,breeding and survival rates.Most of the sap-sucking insects showed no significant reactions to the elevated CO_2,with some increase in population number.Some suggestions for future research were put forward.