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Over the past 150 years, deforestation has contributed an estimated 30 percent of the atmospheric build-up of CO2. It is also a significant driving force behind the loss of genes, species, and critical ecosystem services. However, in the international policy arena, biodiversity loss and climate change have often moved in wholly unconnected domains. — Climate, Biodiversity, and Forests, World Resources Institute, 1998

Carbon Sinks and LandA mechanism suggested for tackling climate change and warming has been the idea of using "Carbon Sinks" to soak up carbon dioxide. To aid in this, reforestation, or planting of new forests, have been suggested. This is a popular strategy for the logging industry and nations with large forests interests, such as Canada, the United States, various Latin American nations, and some Asian countries such as Indonesia.While there may be some potential in this solution, it cannot be effective on its own. This is because it legitimizes continued destruction of old-growth and pristine forests which are rich ecosystem and have an established biodiversity base (albeit shrinking now) that naturally maintain the environment (at no cost!). Creating new forest areas would require the creation of entire ecosystems. It is also criticized for being a quick fix that doesn't tackle the root causes effectively and doesn't lead to, or promote actual emissions reduction.

Environmentalists and others point out that the use of carbon sinks is a big loophole in the Kytoto Protocol; that if carbon sinks can be counted towards emissions reductions credit, then industrialized countries would be able to meet their commitments while reducing emissions by less than would otherwise be required. Because they are carbon sinks, it means that when forests burn or as vegetation naturally dies, they release more carbon too (because it is stored carbon). As the climate changes, it is possible that there may be more forest fires etc, releasing more carbon. (And then these sinks would become sources!)