Carbon Sinks, Forests and Climate Change
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- This page: https://www.globalissues.org/article/180/carbon-sinks-forests-and-climate-change.
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The world's forests and oceans are natural regulators of carbon dioxide content in the atmosphere -- which is a greenhouse gas. While forests are regarded as sinks, meaning they absord carbon dioxide, it is hard to rely on forests to soak up increasing pollution, while forests are increasingly being cut down!
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Effects of over-deforestation
Forests can provide a natural barrier to disasters such as over-flowing rivers. In China, authorities have admitted that excessive felling could have led to the worst case of flooding seen there in 1998. This has resulted in a ban on logging in eastern Tibet and an emphasis placed on re-forestation. Bangladesh has seen similar loss of forests and resulting floods too, for example.
The huge forest fires in the Amazon earlier in March, 1998 had already added a lot of Carbon Dioxide to the atmosphere, months before the "burning season".
The massive fires in Indonesia that caused enormous pollution and breathing-related illnesses even as far away as Singapore in 1998 and had still been causing problems at least into the middle of 1999.
In East Kalimantan (formerly Borneo) the Dayak people who have had to endure these burning forests, believed to be started by large timber businesses, have seen an ecological disaster that has led to starvation and deaths, as reported by a documentary on the politics involved that were related to the environmental issues in that region. This shorter report from the International Development Research Center in Canada has some additional information as well.
Forests are vital parts of many ecosystems. Ensuring a healthy ecosystem that includes forests also means sustainable preservation of other species that dwell in forests. As part of a living system, forests rely on these various species, and the various species rely on forests. For more about the importance of such biodiversity, go to this web site's section on Biodiversity.
Carbon Sinks and Land
A 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!)
Well managed soil can also soak up carbon emissions but this too has problems to do with land rights, local participation, measuring carbon content etc.
Also, some studies suggest that this carbon dioxide fertilization might not be as effective as previously thought, because other important factors such as soil fertility are key to tree growth.
Australia is even using genetically modified trees planted in Vietnam to help meet its targets as cheaply as possible. While this sounds like a promising strategy the issue of reducing fuel use and emissions still needs to be addressed, as well as exploiting Vietnam's cheap land and labor for their purposes, and as the previous link reports, "not only threaten local biodiversity, but also cause displacement of indigenous communities and undermine their livelihood."
It is also very difficult to scientifically measure and account the sinks' effects:
Some critics point out that positions like that of the United States, Japan and Canada on carbon sinks is the equivalent to "Doing something about the world's climate problem without having to really do anything."
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