Losing the Rainforest will change world climate?

I'm doing an essay for geography, and I have a hint list of what to discuss... I don't get this bit... Any help please? And description too please.



Pyro - it's carbon dioxide!





Wood is made of cellulose which is made from five parts carbon dioxide and one part water, which combines through photosynthesis to create cellulose, which is a stable form of carbon. In the end, it rots away and releases some of the carbon dioxide back, but much is kept as topsoil, which traps moisture there where it can feed plants and make rain, rather than being lost to sea.





The great forests of Siberia and Canada grow slowly, but the rainforests grow fast as long as there is adequate rain, and lock up vast amounts of carbon.





There was a bushfire in the Amazon for the first time in history last year. It is drying out, and a large part of South America could in time become a desert. The same is true for Indonesia where former president Suharto sold all the nation's forests to foreign loggers to make money for him and his cronies. It would be true for the Congo, as soon as the civil war there stops, corrupt people will sell the trees there to foreign loggers.





The blanket of carbon dioxide is heating the world up enough to melt the permafrost in Siberia. The loss of reflective covering there from white to brown absorbs sunlight further and increases the warming of Siberia. The thawing peat bogs there also release methane, locked up for many thousands of years, which is a far more potent greenhouse blanket gas than carbon dioxide.





The great frozen rivers release fresh water into the Arctic Ocean which dilutes the salt concentration. Around Greenland, this would prevent the sinking of water to the sea bed and could reduce or stop the Gulf Stream which warms Western Europe and cools the Caribbean.





Australia is on a knife edge, with a vast area of desert, and only the coastal areas habitable, especially in the south and west. Any reduction in rainfall would dry up the Murray River and make places like Adelaide unable to support its population. If summer temperature exceeds 40C, then the eucalyptus trees release vapour which is as inflammable as petrol.





Even in my corner of England, I noticed the removal of willow trees changed the amount of moisture being in the air, released through the leaves of these water-loving trees. All other plants were more stressed quicker than before, taking more water from the soil. It seemed to be baking hard even after a few days without rain, and garden plants needed watering far sooner than was necessary when the willows were putting moisture in the air.




The rainforest is the great stabilizer for carbon dioxide. It "sinks" five to seven times as much/fast as do forests in here in the US. Even if we planted 5 times as many trees here, it would not balance out. The trees there are larger and grow faster and absorb more through their leaves than our trees can.





At a certain point, when enough trees there are removed, the carbon dioxide sink (or loss) will become a net gain, that it when we are in deep trouble. This can not be overstated.




well the trees help keep the temp. the same. the amazon rain forest alone absorbs two billion tons of carbon monoxide from the atmosphere every year. carbon monoxide increases heat.