Afforestation of degraded grasslands, Colombia

As of 2018, 294.1 million hectares of land were used for tree plantations on degraded land. Establishing tree plantations on an additional 112–174 million hectares of marginal lands can sequester 22.04–35.09 gigatons of carbon dioxide by 2050. The use of marginal lands for afforestation also indirectly avoids deforestation that otherwise would be done in the conventional system. At an initial cost of US$91.89–141.68 billion and lifetime operational cost of US$157.74-–243.37 billion to implement, this additional area of timber plantations could produce a lifetime net profit of US$2.05–3.17 trillion.