intraclass sterile

the health of the giant sequoia forests seems to require those frequent, low-intensity fires, swetnam said.

史威特南说，似乎巨型水杉木的健康生长需要频繁的低强度火灾。

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settler galen clark discovered the mariposa grove of giant sequoia in wawona in 1857.

1857年，定居者盖仑·克拉克在瓦沃纳发现了巨型红杉的马里波萨林地。

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mr. werner and other project propagators use various methods to clone two types of redwoods, coastal and giant sequoia.

沃纳先生及其他的项目繁殖人利用各种方法克隆两种红杉。

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increasing ozone pollution is causing tissue damage to the massive giant sequoia trees in the park.

臭氧污染的提高对公园内巨杉的组织损伤。

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What is the purpose of the giant sequoia tree?

巨杉树的用途是什么?

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the rugged forest is crowded with large fir trees and tall lodge pole pines, but they all look like puny twigs compared to the giant sequoia

在这片地势起伏的森林中，高大的冷杉和美国黑松随处可见，但与巨大的红杉相比，它们看起来都如小枝小条一般。

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california's enormous giant sequoia is the world's most massive tree and one of the oldest.

加州的巨杉是世界上最高大的树木，也是最古老的树种之一。

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the charcoal history of fire in the giant sequoia groves extends back more than 8, 000 years.

木炭记录的巨杉林火灾历史可以再向前追溯8000多年。

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he and his colleagues commend the national park service for its recent work reintroducing fire into the giant sequoia groves.

史威特南及其同事对国家公园管理局最近重新向巨型水杉林引入火灾的工作颇多赞誉。

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giant sequoia trees in the giant forest, sequoia national park

红杉国家公园大森林里的巨杉

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The oldest living giant sequoia ( giant redwood) on record was 3500 years old.

据记载，目前世界上最古老的大红杉树龄已达3500年。

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