Black spruce and fir are the dominant tree species in the boreal forest.
黑云杉和冷杉是北方森林的优势树种。
Black Spruce
原声例句
科学60秒-科学美国人 2021年12月合集
科学60秒-科学美国人 2021年12月合集
It's burning off the organic layer of soils that support species like black spruce.
它正在燃烧土壤的有机层，而这些有机层正是黑云杉等物种赖以生存的土壤。
科学杂志：生态学
This showed forests that transitioned to birch and aspen would accumulate carbon four times faster than forests dominated by black spruce.
这表明过渡到白桦和白杨的森林积累碳的速度是黑云杉为主的森林的四倍。
英语百科
Picea mariana
（重定向自Black Spruce）
Picea mariana (black spruce) is a North American species of spruce tree in the pine family. It is widespread across Canada, found in all 10 provinces and all 3 Arctic territories. Its range extends into northern parts of the United States: in Alaska, the Great Lakes region, and the Northeast. It is a frequent part of the biome known as taiga or boreal forest.
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