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Add Desert 'carbon Farming' To Curb CO2

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<br>Desert 'carbon farming' to suppress 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 locations might be an efficient method of curbing emissions of CO2.<br>
<br>Dubbed "carbon farming", researchers say the concept is financially competitive with modern carbon capture and storage tasks.<br>
<br>But critics state the idea could be have unpredicted, unfavorable effects including increasing food prices.<br>
<br>The research study has actually been published, external in the journal Earth System Dynamics.<br>
<br>Seeds of modification<br>
<br>Jatropha curcas is a plant that came from Central America and is effectively adjusted to harsh conditions including 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 a person hectare of jatropha could catch approximately 25 tonnes of co2 from the environment every year. The scientists based their quotes on trees presently growing in trial plots in Egypt and in the Negev desert.<br>
<br>"The results are frustrating," said Prof Klaus Becker, from the University of Hohenheim in Stuttgart.<br>
<br>"There was good growth, a great action from these plants. I feel there will be no problem trying it on a much larger scale, for example ten thousand hectares in the start," he said.<br>
<br>According to the researchers a plantation that would cover 3 percent of the Arabian desert would take in all the CO2 produced by cars and trucks and trucks in Germany over a twenty years period.<br>
<br>The scientists say that a critical component of the strategy would be the accessibility of desalination facilities. This means that at first, any plantations would be confined to coastal areas.<br>
<br>They are wishing to develop bigger trials in desert areas of Oman or Qatar. Prof Becker says that unlike other plans that just offset the carbon that individuals produce, the planting of jatropha might be an excellent, brief term service to climate modification.<br>
<br>"I believe it is a good concept since we are truly drawing out co2 from the environment - and it is entirely various between drawing out and avoiding."<br>
<br>According to the researcher's computations the costs of curbing carbon dioxide by means of the planting of trees would be 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 of countries are presently trialling this technology, external but it has yet to be released commercially.<br>
<br>Growing jatropha not just absorbs CO2 but has other advantages. The plants would assist to make desert locations more habitable, and the plant's seeds can be gathered for biofuel state the researchers, offering a financial return.<br>
<br>"Jatropha is perfect to be become biokerosene - it is even better than biodiesel," said Prof Becker.<br>
<br>But other specialists in this location are not convinced. They point to the fact that in 2007 and 2008 great deals of jatropha trees were planted for biofuel, especially in Africa. But a number of these ventures ended in tears,, external as the plants were not really effective in dealing with dry conditions.<br>
<br>Lucy Hurn is the biofuels campaign supervisor for the charity, Actionaid. She states that while jatropha was as soon as viewed as the great, green hope the truth was very various.<br>
<br>"When jatropha was introduced it was seen as a wonder crop, it would grow on scrubland or limited land," she said.<br>
<br>"But there are typically individuals who require marginal land to graze their animals, they are getting food from that location - we wouldn't class the land as limited."<br>
<br>She pointed out that jatropha is extremely poisonous and can pollute the land it is grown on, even in a desert. And she also had concerns about the fairness of the idea.<br>
<br>"It is still someone else's land. Why enter and grow these massive plantations to handle an issue these people didn't actually 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 web links<br>
<br>Universität Hohenheim<br>
<br>European Geosciences Union<br>
<br>The BBC is not accountable for the material of external sites.<br>