2 - Basic Chemical Processes - Carbon Cycles

2 - Basic Chemical Processes - Carbon Cycles - Basic...

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Basic Chemical Processes – Carbon Cycle
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Basic Physical Factors Water Light Soil Energy Chemical elements
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Biogeochemistry = study of movement of elements between organisms and different parts of the physical environment C, H, O, N, P, Ca, Zn, etc….
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Critical Questions in Biogeochemistry
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Critical Questions in Biogeochemistry These questions must be asked for every element and material used in the agroecosystem
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Basic Chemical Processes - Photosynthesis Photosynthesis - introduces inorganic carbon (from CO 2 ) into the community via organic carbon. Photosynthesis - energy from solar radiation incorporated into organic molecules (in green plants in agricultural systems): 2 6 12 6 light 2 2 O 6 O H C O H 6 CO 6 + + Light energy is added
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Photosynthesis 2 6 12 6 light 2 2 O 6 O H C O H 6 CO 6 + + Organic molecules contain: C Energy Both now incorporated into living plant system
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Respiration - energy necessary for life functions is released by breakdown (oxidation) of energy-rich organic molecules. Many different organic molecules can be
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2 - Basic Chemical Processes - Carbon Cycles - Basic...

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