食物链结构 meaning in English
food chain structure
Examples
- The theoretical analysis shows that any human activities , responsible for the changes of rock , air , water , soil and biology inside or outside the caves , will influence inevitably cave animals in terms of such levels as molecule , cell organelle , cell , tissue , organ , system , individual , population , society and ecosystem . these effects can be observed on cave animal ' s shape - building , activity , tissue structure , metabolism , space - time distribution , biothythm , structure of population and society , food chain , bio - relation , diversity of population and society , and function of the above - mentioned levels
理论分析表明，凡是能够引起地表和洞穴岩石、空气、水、土壤、生物等变化的一切人类活动都不可避免地使洞穴动物在分子、细胞器、细胞、组织、器官、系统、个体、种群、群落和生态系统各级层次上产生效应，这些效应具体表现在影响洞穴动物形态建成、行为、组织结构、新陈代谢、时空分布、生物节律、种群和群落结构、食物链结构、生物关系、种群和群落多样性以及各层次所表现的功能的多少、快慢、强弱等方面。 - In summary , the exotic species can affect native bird species in four main ways , 1 ) predation of birds or eggs by the exotic mammals ; 2 ) competition for habitats and foods with exotic birds , and loss of genetic diversity by hybridization with the closely - related exotic species ; 3 ) direct and indirect alterations of native habitats and food resources , and predation by the exotic invertebrates ; and 4 ) loss and fragmentation of habitats for native birds through altering species composition and structure of native plant communities by exotic plants
外来生物对鸟类的影响主要表现在以下几方面： ( 1 )外来哺乳动物对成鸟、幼鸟或鸟卵的捕食作用； ( 2 )外来鸟类与本地鸟类竞争栖息地和食物资源，与当地的近缘种杂交而造成基因流失； ( 3 )外来无脊椎动物改变本地鸟类的栖息环境和食物状况，甚至直接捕食本地鸟类； ( 4 )外来植物入侵改变入侵地的植物群落组成和结构，造成本地鸟类的栖息地丧失或破碎化，并通过改变入侵地生态系统的食物链结构而对高营养级的鸟类产生影响。