It is likely that the severity of this pest in some regions of China resulted from the high susceptibility of introduced ash tree species from North America to EAB.

中国部分地区发生的花曲柳窄吉丁灾害应该归属于引进的北美白蜡树种对本地害虫敏感所致。

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Some other applications of ornamental tree species were also introduced.

文中还介绍了观赏树木其它方面的用途。

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At the same time, community plantations with fast-growing tree species for use as fuelwood are being introduced, as well as 10 000 efficient wood-burning stoves.

UNESCO: The lucrative business of saving East African forests