Two effects are taken into consideration, that is, the countries which have difficulty in reducing the emissions of greenhouse gases can realize it at low cost, whereas the countries not having difficulty in reducing the emissions can achieve remuneration for the emissions reduction in large quantities.
温室効果ガス削減が容易ではない国は少ない費用で削減が可能となり、削減が容易な国は対価を求めて大量の削減が望めるという、2つの効果を念頭に置いている。