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Swetnam

Swetnam

作品年表，权证20 -网站地图- nytimes.com ... 芯片斯隆 souck 芯片斯维恩 swetnam 芯片索普 touchey ...

新的研究把斯韦特纳姆（Swetnam）先前得出的年轮野火史又向古代推进了一千年。此外，他和他的同事还用其他树种的年轮 …

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

The new research extends Swetnam's previous tree-ring fire history for giant sequoias another 1, 000 years into the past .

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