The Kyoto protocol includes strict rules on the design, measurement and monitoring of the offsets it permits rich countries to buy from poor ones to meet their targeted cuts in emissions.

• 京都议定书允许富国从穷国购买补偿以完成削减排放的既定指标，在补偿的制定，计算和监视方面都有严格规定，但对自愿补偿却缺乏公认的标准。