微生物与物质循
▪ 微生物与物质循环
生态系统的重要功能 」能量流动 生食食物链( grazing food chain) 腐食食物链( detritus food chain) 物质循环 能量元素∶○、C、H、N 营养元素P、K、Na、Oa、Mg、S等 微量元素:Fe、Mn、CO等
生态系统的重要功能 ▪ 能量流动 生食食物链（grazing food chain） 腐食食物链（detritus food chain） ▪ 物质循环 能量元素：O、C、H、N 营养元素：P、K、Na、Ca、Mg、S等 微量元素：Fe、Mn、Co等
微生物在碳循环中的作用
▪ 微生物在碳循环中的作用
Carbon cycle/recycle CO, in atmosphere B Plants, algae, cyanobacteria Animal Fixation respiration respiration Wood and fossil fuels Consumption CHa+CO2 Plants Animals Dissolved Decomposition Photosynthesis Soil and Dead water microbes organisms Aquatic Plants, algae, bacteria cyanobacteria Fossil b Dead organisms fuels XCluding aquatic animals Copyright @2001 Benjamin Cummings, an imprint of Addison Wesley Longman, Inc
Carbon cycle/recycle
Carbon Cvcle (CH2O)n Photosynthesis Organic compounds Algae Green pla R Plants Chemolithotrophic Animals bacteria Microorganisms Methanotrophs Anoxic Methanogens Homoacetogens Sedimentation and fermentation (Methyl Anaerobic micro- compounds and acetate Anoxygenic organisms including phototrophic bacteria phototroph bacteria ganIc compo (CH2O)n Summary of aerobic and aerobic transformations of carbon
Summary of aerobic and aerobic transformations of carbon Carbon Cycle