The entire continent and the majority of species are now affected: between 30% and 50% of the tree population.

整个大陆和大部分的物种（占树木的数量的30%至50%）目前都受到了影响。

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The forest area of classic garden and ancient tree population should focus on the rejuvenation and pest control.

古树名木和古典园林中的森林区域要重点考虑古树的复壮措施及病虫害的防治等。

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Since the isozyme techniques were used in genetic studies of forest tree population, great progress has been made.

本文评述了用同工酶技术研究林木群体遗传变异的情况，并对研究中应注意的几个问题进行了讨论。

youdao

When you get--this is Rituparna, counting the leaves on a tree-- you can estimate, from a sample, the population expected values.

如果你...像数叶子的睿都巴若那一样,只有部分样本的话,你可以来估计总体均值

耶鲁公开课 - 金融市场课程节选

The rising tree population could disrupt the natural processes that cycle snow and energy through the region and increase the amount of carbon it stores, according to the researchers.

CNN: Shrub census shows Alaskan Arctic losing its cool

During the siege of Saragossa, which began in 1808, a miraculous apparition of a palm tree with a crown raised the morale of the entire population.

NEWYORKER: Slaughterhouse