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Carbon Budgets
For 330 Carbon Budgets/GPP from Chapin 2011
| Term | Definition |
|---|---|
| Allocation | Proportional distribution of photosynthetic products or newly acquired nutrients among different organs or functions in a plant. |
| Biogenic | Biologically produced. |
| Coupling | Effectiveness of atmospheric mixing between the canopy and the atmosphere. |
| Gross primary production | Net carbon input to ecosystems, i.e., net photosynthesis expressed at the ecosystem scale (g C m-2 yr-1). |
| Net primary production | Quantity of new plant material produced annually (GPP minus plant respiration); includes new biomass, hydrocarbon emissions, root exudates, and transfers to mycorrhizae. |
| Respiration | Biochemical process that converts carbohydrates into CO2 and water, releasing energy that can be used for growth and maintenance. |
| Senescence | Programmed breakdown of plant tissues. |
| Shade leaf | Leaf that is acclimated to shade or is produced by a plant adapted to shade. |
| Sun leaf | Leaf that is acclimated to high light or Microbial community embedded in a matrix of polysaccharides secreted by bacteria. |