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Spare our restored soil

机译:保留我们恢复的土壤

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摘要

In 1985, the US Department of Agriculture established the Conservation Reserve Program to revitalize degraded and marginalized agricultural land by converting it to grassland. Although enthusiasm for the programme has been far from universal, many agree that it did generally rebuild soils and cause carbon to be sequestered within them. But with a large number of the programme's contracts with farmers about to expire, revitalized land might soon be ploughed up, with unknown environmental consequences. Writ- ing in Global Change Biology, Ruan and Robertson fill us in on one of those consequences: the effect on greenhouse-gas emissions. They conclude that it would be best to maintain these restored grasslands as they are, but that, if they must be cultivated, 'no-tillage' farming produces many fewer greenhouse-gas emissions than does farming involving conventional ploughing.
机译:1985年,美国农业部建立了“保护储备计划”,通过将退化和边缘化的耕地转变为草地来使其恢复生机。尽管对该计划的热情远未达到普遍标准,但许多人一致认为,该计划确实确实在重建土壤并使碳被隔离在土壤中。但是,随着该计划与农民的大量合同即将到期,振兴的土地可能很快被耕种,对环境造成了未知的后果。阮和罗伯逊(Roan and Robertson)在《全球变化生物学》(Global Change Biology)上发表的文章为我们带来了以下后果之一:对温室气体排放的影响。他们得出结论,最好将这些恢复后的草地保持原样,但是,如果必须进行耕种,“免耕”农业产生的温室气体排放量将比传统耕作农业减少得多。

著录项

  • 来源
    《Nature》 |2013年第7453期|180-181|共2页
  • 作者

    Johan Six;

  • 作者单位

    the Department of Environmental Systems Science, ETH-Zurich,8092 Zurich, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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