The lungs of the earth were related to South America, and that is where the numbers are biggest.
What they leave behind after the jungle is gone does not bind much carbon at all. Crop rotation COULD be executed by replanting trees for instance, but who is ready to pay more for the coffee for that?????
One routine: Burn the jungle (releasing all the Carbon tied up in the biomass into the atmosphere), grow coffee until the soil is not fertile enough, then use the land as long as possible for grazing cattle. Cheap coffe and cheap beef.
I am not wavering BTW. My view on the whole GW is maybe a little aside from the mainstream (which is "GW is happening and its because of the CO2"). Mine is simply that we are experiencing a warming climate, and a lot of things we humans to affect the climate in exactly that direction. Modest, ain't I? And I am not fond of the carbon quota idea at all. BTW, much of the carbon released gets tied up in the oceans. As they warm up, there can be a huge spike in CO2 when it gets released (less saturation). So, we're only beginning to see things.
Now, to alternative energy....
I completely disagree about wind turbines being useless. Its just that they do not solve the whole problem.
Wind energy is unstable, and therefor difficult to keep in a power grid. However, if it can be stored like by heating water, as well as being used on systems that can take some fluctuations, it is just fine. I am well into this, since I am working on a project of testing out some few units of small turbines (3.5-5kw) on farms. The idea is to run the boiler on wind power alone, the water in the boiler being the "battery" so to speak. Those small turbines are not that expensive, - if they can be financed with low intrest rates they are completely compeatable to any powergrid price. (That is why I am doing it). I am however not so keen on those huge ones. It means many big units and a lot of fuss when something breaks.
And to Bisons....which were my example on how far humans will go in their depleting business....
Bisons in N-America were mostly wiped out because of the fur. Some meat and bones were also used. From god-knows-how-many-millions of them down to a few hundred in mere decades. It did not spoil the party that the railroad business also wanted to get rid of them.
http://en.wikipedia.org/wiki/American_Bison#19th_century_bison_huntsNo hijack, but cannot resist posting this one:
I could also mention the worldwide overfishing.
http://en.wikipedia.org/wiki/Atlantic_cod#Northwest_Atlantic_codIt is the same everywhere, main rule applies. Unlimited access to a limited resource will lead to depletion....