They may be as old as the terrestrial ecosystem, ” said Sandra Baldauf, an evolutionary biologist at Uppsala University in Sweden.

“他们可能和陆地生态系统一样古老，”瑞典乌普萨拉大学进化生物学家桑德拉·巴尔道夫（Sandra Baldauf）说。

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Soil carbon is an important part of terrestrial ecosystem carbon cycle.

土壤碳是陆地生态系统碳循环的重要组成部分。

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Forest just like lung of the earth is main part of terrestrial ecosystem.

森林是地球之肺，是陆地生态系统的主体。

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However, Sir Fred and Dr Wickramasinghe took it to ridiculous lengths, proposing not only the arrival of organisms from outer space, but that those organisms (such as influenza viruses) are somehow already adapted for life in the hurly-burly of the terrestrial ecosystem.

ECONOMIST: Sir Fred Hoyle

It provides an outstanding example of the interaction of marine and terrestrial ecosystems as well as extraordinary ecosystem productivity, largely influenced by the formation of seasonal sea ice at the lowest latitude in the northern hemisphere.

UNESCO: Culture