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Genetic improvement is also a means to improve forest productivity, for example to ensure a high wood production in intensively managed forests.

基因改良亦是提高森林生产力的一种手段，例如确保集约管理的森林提供高木材产量。

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Artifical improvement of soil fertility in a regraded forest ecosystem by using municipal sewage sludge.

城市污泥对退化森林生态系统土壤的人工熟化研究。

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And Barnsley - also playing under a new manager in Keith Hill - were good value for their point despite Forest's slight improvement after the interval.

BBC: Nott'm Forest 0-0 Barnsley