Like brown bears and polar bears, sloth bears may have evolved in an environment with few trees.

和棕熊和北极熊一样，树懒熊可能是在树木稀少的环境中进化而来的。

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Humans have been damaging the environment for centuries by overcutting trees and farming too intensively.

几个世纪以来，人类过度砍伐树木及过度集约耕作，一直在破坏环境。

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Mr Blakey said the diseased trees were found during a routine inspection by the Department for Environment, Food and Rural Affairs (Defra) and ordered to be destroyed.

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It also said climbers must play a role in protecting the environment by avoiding wild bird nest sites and not slinging climbing ropes around trees.

BBC: Climbers take part at 'own risk'

The 3km and 9km Circles in a Forest trails explore the refreshing green environment, passing 3m-high tree ferns, old-growth trees, strange fungi and babbling brooks.

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