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 state that planting great deals of jatropha trees in desert areas could be an effective method of curbing emissions of CO2.<br>
<br>Dubbed "carbon farming", scientists say the idea is economically competitive with high-tech carbon capture and storage projects.<br>
<br>But critics say the idea could be have unexpected, unfavorable effects including increasing food prices.<br>
<br>The research has been published, external in the journal Earth System Dynamics.<br>
<br>Seeds of change<br>
<br>Jatropha curcas is a plant that stemmed in Central America and is extremely well adjusted to severe conditions consisting of very arid 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 study, German scientists revealed that one hectare of jatropha could capture approximately 25 tonnes of carbon dioxide from the environment every year. The scientists based their estimates on trees currently growing in trial plots in Egypt and in the Negev desert.<br>
<br>"The outcomes are overwhelming," stated Prof Klaus Becker, from the University of Hohenheim in Stuttgart.<br>
<br>"There was good growth, a good action from these plants. I feel there will be no problem attempting it on a much larger scale, for example 10 thousand hectares in the beginning," he stated.<br>
<br>According to the scientists a plantation that would cover 3 percent of the Arabian desert would take in all the CO2 produced by cars and trucks in Germany over a twenty years period.<br>
<br>The scientists state that a vital component of the strategy would be the accessibility of desalination centers. This indicates that initially, any plantations would be restricted to seaside areas.<br>
<br>They are intending to develop larger trials in desert locations of Oman or Qatar. Prof Becker says that unlike other schemes that just offset the carbon that individuals produce, the planting of jatropha could be a good, short-term service to climate change.<br>
<br>"I believe it is a great concept due to the fact that we are truly drawing out carbon dioxide from the atmosphere - and it is totally various in between drawing out and avoiding."<br>
<br>According to the researcher's estimations the expenses of curbing co2 through the planting of trees would be in between 42 and 63 euros per tonne. This makes it competitive with other methods, such as the more high tech carbon capture and storage, external (CCS).<br>
<br>A number of nations are presently trialling this innovation, external however it has yet to be deployed commercially.<br>
<br>Growing jatropha not just soaks up CO2 however has other benefits. The plants would assist to make desert locations more habitable, and the plant's seeds can be harvested for biofuel say the scientists, providing an economic 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 indicate the fact that in 2007 and 2008 big numbers of were planted for biofuel, specifically in Africa. But much of these endeavors ended in tears,, external as the plants were not really effective in managing dry conditions.<br>
<br>Lucy Hurn is the biofuels project supervisor for the charity, Actionaid. She says that while jatropha was as soon as viewed as the terrific, green hope the truth was extremely various.<br>
<br>"When jatropha was introduced it was seen as a miracle crop, it would grow on scrubland or minimal land," she said.<br>
<br>"But there are frequently people who require limited land to graze their animals, they are getting food from that area - we would not class the land as limited."<br>
<br>She pointed out that jatropha is extremely harmful 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 people didn't really 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 technique'<br>
<br>Published<br>
<br>15 April 2013<br>
<br>Related internet links<br>
<br>Universität Hohenheim<br>
<br>European Geosciences Union<br>
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