airtight

The benefits of hedges go further. Studies in Europe, Africa and Asia show that they protect against soil-eroding winds and floods, help cool the air and can even help curb the spread of infectious diseases like bovine tuberculosis among cattle by creating a nearly airtight barrier between herds. Hedge plants also suck carbon out of the air and into plant biomass or soil – in some pastures, helping to offset the planet-warming emissions from cows. "Hedges should be right up there as one of the things that we can use to stop the impact of climate change being so severe," says ecologist Ian Montgomery of Queen's University Belfast in Northern Ireland, an author of a summary of the research on hedgerow benefits in the Annual Review of Ecology, Evolution, and Systematics.

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