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Burning Buried Sunshine: Human Consumption of Ancient Solar Energy

机译:焚烧阳光:人类对古代太阳能的消费

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摘要

Fossil fuels developed from ancient deposits of organic material, and thus can be thought of as a vast store of solar energy from which society meets >80% of its current energy needs. Here, using published biological, geochemical, and industrial data, I estimate the amount of photosynthetically fixed and stored carbon that was required to form the coal, oil, and gas that we are burning today. Today's average U.S. Gallon (3.8 L) of gasoline required approximately 90 metric tons of ancient plant matter as precursor material. The fossil fuels burned in 1997 were created from organic matter containing 44 × 1018 g C, which is>400 times the net primary productivity (NPP) of the planet's current biota. As stores of ancient solar energy decline, humans are likely to use an increasing share of modern solar resources. I conservatively estimate that replacing the energy humans derive from fossil fuels with energy from modern biomass would require 22% of terrestrial NPP, increasing the human appropriation of this resource by ∼50%.
机译:化石燃料是从古老的有机材料沉积物中发展而来的,因此可以认为是大量的太阳能存储,社会可以从中满足当前能源需求的80%以上。在这里,我使用公开的生物,地球化学和工业数据,估算了形成我们今天燃烧的煤炭,石油和天然气所需的光合作用固定和存储的碳量。当今的美国平均加仑汽油(3.8升)需要约90公吨的古代植物物质作为前体材料。 1997年燃烧的化石燃料是由含44×1018克碳的有机物制成的,这是地球目前生物群的净初级生产力(NPP)的400倍。随着古代太阳能存储的减少,人类可能会使用越来越多的现代太阳能资源。我保守地估计,用现代生物质能替代人类从化石燃料中获取的能源将需要22%的陆地NPP,使人类对这种资源的占用增加了约50%。

著录项

  • 来源
    《Climatic Change》 |2003年第2期|31-44|共14页
  • 作者

    Jeffrey S. Dukes;

  • 作者单位

    Department of Biology University of Utah;

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  • 原文格式 PDF
  • 正文语种 eng
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