Greenhouse gases (GHG)

Gaseous constituents of the atmosphere, from natural or anthropic sources, that absorb and re-emit infrared radiation. The UNFCCC and Kyoto Protocol count for carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and sulfur hexafluoride (SF6), accompanied by two families of gases – hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) .

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Permanence

Permanence

Time at which carbon stored by sequestration remains in a carbon pool without being rereleased. Only permanent carbon pools are acceptable for climate policy purposes.

Agroforestry systems

Agroforestry systems

Forms of land-use and land-management, in which trees or shrubs are used together with crop and/or animals in the same area, simultaneously or in a sequence of time. They must include at least one tree or shrub forest species, which can be combined with one or more...

Source

Source

Any process or activity that releases greenhouse gases, aerosols or a precursor of greenhouse gas into the atmosphere.