地球上最大的生态系统是()A.湿地生态系统B.生物圈C.海洋生态系统D.森林生态系统
生物圈是地球上所有来自生物与其生存的环境形成的一个统一整体,它包括大气圈的底部、水圈的大部和岩石圈的表面三个部分.包括森林生态系统、海洋生态系统、农田生态系统、草原生态系统、淡水...
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被喻为“地球之肺”称号的生态系统是A.农田生态系统B.湿地生态系统C.森林生态系统D.海洋生态系统
C分析:本题考查的是营检送击去信杨生态系统的类型,不同的生态系统具有不同的特点.解:森林生势烧额略按微曲电景们战态系统中中生活着大量的绿色植物.它可以通过绿色植物的光合作用,不但...
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红树林属于 A.森林生态系统 B.湿地生态系统 C.海洋生态系统 D.淡水生态系统
B红树林湿地生态系统是由生长在热带海岸泥滩上的红树科植物(常绿360问答灌木或乔木)与其周围环境共米当同组成的生态功能统一体。
森林生态系统被称为 湿地生态系统被称为
森林生态系统分然烟云已信罗布在较湿润的地区来自,动植物种类繁多360问答.森林在涵养水源、保持水土、防风固沙、调节气候、净化空气、消除污染等方面起着重要作用,有“绿色水库”、“地...
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森林生态系统 和 湿地生态系统
森林生态系稳区统,由于森林的生态系统层次多360问答,比湿地更为复杂屋罗宽金钟获想缺源,在遇到较小的生态破坏时比较容易修复,但是在比较彻底的破坏之后恢复到原样要较长时间,而湿地生...
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据调查,我市生态系统类型有森林生态系统、湖泊生态系统、农田生态系统和园林生态系统等,其中生物种类最少的生态系统是( )
spanC解析:解:A、森林生态系统分布在较湿润的地区,动植物种类繁多.森林在涵养水源、保持水土、防风固沙、调节气候、净化空气、消除污染等方面起着重要作用,来自有“绿色水库”、“...
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草原生态系统、海洋生态系统、淡来自水生态系统、湿地生态系统、农田态系统等的功能??
草原生态系统草原生态系统分布在干旱地区,年降雨量较少。与森林生态系统相比,草原生态系统的动植物种类要少得多,群落结构也不如前者复快触杂。在不同的季节或年份,降雨量很不均匀,因此,...
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人工生态系统与自然生态系统的区别
人工生态系统是指以人类活动为生态环境中心,按照人类的理想要求建立的生态系统。人工生态系统如城市生态系统,农业生态系统等。人工生态系统的特点是:①**性。即受人类**的强又由毛婷相...
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生态系统
五上科学第一草孙孩座月逐业个标单元关于生态系统与生物群落的概念,今年教材上的表述与去年的不同,去年第六课上的表述是:像池塘里的生物和非生物这样,互相作用,互相依存,形成一个密不可...
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水生态系统、水生生态系统、水域生态系统三者的区别
水生态系统(aquaticecosystem)由水生360问答生物群落与水环境共同构卖尘配成的具有特定结构和功能的动态平衡系统水生生态系统是地球表面各类水域生态系统的总称.水生生...
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人工生态系统与自然生态系统的区别?
当然来自有区别人工生态系统是人为建造的包含农田生态系统城市按济能案生态系统等自然生态系统包括森林生态系统海洋生态系统草原生态系统湿360问答地生态系统等
自然生态系统包括什么生态系统什么生态系统?
自然生态系统可以分为:①水生生态系统:以水为基质的生态系统路百决太;②陆生生态系统:以陆地土壤或母质等为基质的生态系统。
河流生态系统与哪些生态系统相关联?
河让鱼活,鱼让猫活,猫让肉食动物活,能格外在鱼让人活,人让所有东西活。生物圈是最大的生态系统”自主学习设计及马掉绿王飞实施作者[breath]发表于[2006-11-317:26...
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