The Woodland Trust

Publication date:

April 2019

Publication type:

Practical guidance



Ancient woodland report front cover

This practical guidance provides a clear decision-making process for assessing ammonia air-pollution on ancient woodland sites.

Ancient woodlands are being damaged by increasing concentrations of ammonia in the air and levels of nitrogen in the ground. This can be due to intensive livestock rearing or poultry farming near ancient woodland.

It remains one of the greatest threats to ancient woodland in the UK.

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