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Environmental, Campaign & Website News > Deforestation hits nutrient cycle

Deforestation hits nutrient cycle

Date : 19th December 2007, Source : BBC Link to News Story



The benefits of cutting down tropical forests in order to convert the nutrient-rich soil into farmland are only short-lived, scientists suggest. US researchers studied deforested land in Mexico and found that soil levels of phosphorus, a key nutrient for plants, fell by 44% after three growing cycles. In the long-term, the land risked becoming so degraded that it would be uneconomic to farm, they added. The findings appear in the Proceedings of the National Academy of Sciences.

http://news.bbc.co.uk/2/hi/science/nature/7148278.stm





Document last updated on Tuesday 30 August 2011

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