In midmost of the stream, embraced in the weir's shimmering arm-spread, a small island lay anchored, fringed close with willow and silver birch and alder.

在大坝那闪光的臂膀环抱中，安卧着一个小岛，四周密密层层长着柳树、白桦和赤杨。

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The wood properties of alder is similar to that of poplar and birch which could be used to produce different kinds of pulp.

就桤木商用种植的生产潜力、制浆造纸和材性研究现状等进行综合评述。

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Alder trees belong to the birch family.

赤杨属于桦木科。

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Alder trees lead the growth advance, followed by birch and willow.

CNN: Shrub census shows Alaskan Arctic losing its cool

Then it was tundra, then birch forest, then pine forest, then alder, linden, elm and ash, then most recently oak, but beech was coming.

WSJ: Ecology and Change: Nature Has No 'Balance' for Us to Keep | Mind & Matter