Tree thinning was employed in later years.

在以后几年进行间伐。

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Furthermore, the relationships among contribution of different layers of tree crown to light absorption, dynamic analysis of tree crown structure and thinning as well as pruning were discussed.

并就不同冠层对光吸收的贡献与树冠结构动态分析及抚育间伐修枝方面的关系进行了讨论。

youdao

K + W value is specified for selecting tree species in forestation and tending thinning.

(K + w)值对选择造林树种和抚育间伐具有一定的指导意义。

youdao

The agency said Nant y Bryn brook in the Crychan forest was polluted during a "tree thinning operation" and contractors working for the commission were responsible.

BBC: Forestry Commission fined ?24,000 for Powys pollution