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Add Desert 'carbon Farming' To Curb CO2

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<br>Desert 'carbon farming' to curb CO2<br>
<br>1 August 2013<br>
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<br>By Matt McGrath<br>
<br>Environment correspondent, BBC News<br>
<br>Scientists say that planting great deals of jatropha trees in desert areas might be a reliable method of suppressing emissions of CO2.<br>
<br>Dubbed "carbon farming", scientists state the concept is financially competitive with high-tech carbon capture and storage tasks.<br>
<br>But critics say the concept could be have unexpected, negative effects consisting of increasing food costs.<br>
<br>The research study has been released, external in the journal Earth System Dynamics.<br>
<br>Seeds of modification<br>
<br>Jatropha curcas is a plant that came from in Central America and is effectively adjusted to extreme conditions including extremely dry deserts.<br>
<br>It is already grown as a biofuel, external in some parts of the world because its seeds can produce oil.<br>
<br>In this research study, German researchers revealed that a person hectare of jatropha might record up to 25 tonnes of carbon dioxide from the environment every year. The scientists based their quotes on trees currently growing in trial plots in Egypt and in the Negev desert.<br>
<br>"The results are overwhelming," stated Prof Klaus Becker, from the University of Hohenheim in Stuttgart.<br>
<br>"There was good growth, an excellent reaction from these plants. I feel there will be no issue trying it on a much bigger scale, for instance ten thousand hectares in the start," he stated.<br>
<br>According to the researchers a plantation that would cover 3 percent of the Arabian desert would soak up all the CO2 produced by cars and trucks and trucks in Germany over a twenty years duration.<br>
<br>The scientists state that a vital component of the strategy would be the schedule of desalination facilities. This indicates that at first, any plantations would be restricted to coastal locations.<br>
<br>They are wanting to establish bigger trials in desert locations of Oman or Qatar. Prof Becker states that unlike other plans that simply offset the carbon that individuals produce, the planting of jatropha might be a good, short-term option to climate modification.<br>
<br>"I think it is an excellent concept because we are really extracting carbon dioxide from the environment - and it is totally different in between extracting and avoiding."<br>
<br>According to the scientist's estimations the expenses of suppressing carbon dioxide by means of the planting of trees would be in between 42 and 63 euros per tonne. This makes it competitive with other techniques, such as the more high tech carbon capture and storage, external (CCS).<br>
<br>A number of countries are currently trialling this technology, external however it has yet to be deployed commercially.<br>
<br>Growing jatropha not just absorbs CO2 however has other advantages. The plants would help to make desert areas more habitable, and the plant's seeds can be gathered for biofuel state the researchers, supplying a financial return.<br>
<br>"Jatropha is ideal to be become biokerosene - it is even much better than biodiesel," stated Prof Becker.<br>
<br>But other experts in this area are not encouraged. They point to the reality that in 2007 and 2008 great deals of jatropha trees were planted for biofuel, specifically in Africa. But a number of these ventures ended in tears,, external as the plants were not extremely effective in dealing with dry conditions.<br>
<br>Lucy Hurn is the biofuels project manager for the charity, Actionaid. She says that while jatropha was once seen as the terrific, green hope the reality was extremely different.<br>
<br>"When jatropha was presented it was seen as a wonder crop, it would grow on scrubland or marginal land," she stated.<br>
<br>"But there are frequently people who require minimal land to graze their animals, they are getting food from that area - we wouldn't class the land as marginal."<br>
<br>She pointed out that jatropha is extremely toxic and can contaminate the land it is grown on, even in a desert. And she likewise had concerns about the fairness of the concept.<br>
<br>"It is still somebody else's land. Why enter and grow these massive plantations to handle an issue these individuals didn't in fact trigger?"<br>
<br>Follow Matt on Twitter, external.<br>
<br>More on this story<br>
<br>'Carpets of seaweed' grown for fuel. Video, 00:03:05'Carpets of seaweed' grown for fuel<br>
<br>1 July 2013<br>
<br>Biofuels are 'illogical strategy'<br>
<br>Published<br>
<br>15 April 2013<br>
<br>Related internet links<br>
<br>Universität Hohenheim<br>
<br>European Geosciences Union<br>
<br>The BBC is not accountable for the content of .<br>