http://www.newscientist.com/article.ns?id=dn7749

Planting trees may create deserts

Trees trap moisture from the air and bind soils that prevent floods, store water and nourish the environment……. or do they?

An emerging new consensus among forest and water professionals is that although tree planting does have water benefits in some situations, in others trees suck up moisture from the soil, evaporate water from their leaves, lower water tables, empty rivers and create deserts.

This is going to stir up debate!

Most tree-lovers and environmentalists (according to the report) have “common but misguided views about water management… resulting in the waste of tens of millions of pounds every year across the world… often through projects intended to improve water conditions in developing countries”.

“The simple view that more trees are always better is bad policy.”

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