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Graph 1(b) showing average soil NO3-N concentration along a 200 m transect from a Corsican pine woodland edge near a pollution source. At 20m from woodland edge average is approximately 22 mg/kg oven dry soil, dropping to 17 mg/kg at 200m.

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Graph 1(b) showing average soil NO3-N concentration along a 200 m transect from a Corsican pine woodland edge near a pollution source. At 20m from woodland edge average is approximately 22 mg/kg oven dry soil, dropping to 17 mg/kg at 200m.


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Credit line: Forestry Commission

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