Second commitment period

The release of greenhouse gases and/or their precursors into the atmosphere at a specific area and over a specified period.

It is a land area of at least ​​0.05-1.0 hectare with tree crown cover (or equivalent level of stock) with more than 10-30% of trees having the potential to reach the minimum height of 2-5 meters in in situ maturity. A forest may consist of closed forest...

Intergovernmental agreements, including protocols and amendments, are not legally valid until ratified by a certain number of countries. For the UNFCCC creation, it took 50 countries; as for ratifying the Kyoto Protocol, at least 55 countries were required...