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Water and Carbon Cycles as Natural Systems (systems approach (input -…
Water and Carbon Cycles as Natural Systems
systems approach
input - material moving into a system from the outside
drainage basin - precipitation
woodland carbon - precipitation with dissolved carbon
output - material moving from the inside out
drainage basin - runoff
woodland carbon - runoff with carbon
energy - power or driving force
drainage basin - latent heat in changes in state of water
woodland carbon - photosynthesis
stores/components - individual elements or parts of a system
drainage basin - trees, puddles, soil
woodland carbon - trees, soils, rocks
flows - the links or relationships between the components
woodland carbon - burning, absorption
drainage basin - infiltration, groundwater flow, evaporation
positive feedback - accelerates a change in the cycle
drainage basin - rising sea levels can melt ice caps further
woodland carbon - higher temps melt permafrost which releases locked up carbon enhancing the greenhouse effect further
negative feedback - redresses the balance
drainage basin - clouds reflect radiation, cooling surface temperatures
woodland carbon - more plants so more photsynthesis more removal of CO2 from atmosphere