土壤、气候和立地因子等环境因子影响树木外生菌根菌的种类及数量。

The species and the number of Ectomycorrhizal fungi (ECM fungi) are influenced by many environmental factors, such as soil factor, climate and season, and site factor.

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科学家说这个新的证据首次表明脑袋尺寸是影响动物在城市环境中生存的关键因子。

Scientists say this new evidence is the first to show that brain size is a key factor for animals' survival in urban environments.

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通过从团队以及其他环境下的影响中，计算环境因子(EF)。

You do this by calculating the environmental factor (EF) from the team's qualifications and other environmental influences.

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