...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Climatic Change >Thermodynamics and environmental constraints make the biosphere predictable – a response to Volk
【24h】

Thermodynamics and environmental constraints make the biosphere predictable – a response to Volk

机译：热力学和环境限制使生物圈可预测–对Volk的回应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In his critique of Kleidon (Clim Change 66:271–319, 2004), Volk (Clim Change 85:3–4, 2007) concludes that maximum entropy production (MEP) has no great relevance for biological evolution and the time history of life on Earth. I think that most of his points are not justified but rather reflect (a) a lack of appreciation of the central importance of entropy production as the “universal currency” that measures what keeps systems working, including the biosphere, (b) a misunderstanding of how biotic activity is embedded in the global entropy budget, and (c) a lack of distinction between optimal environmental conditions that maximize productivity and result from environmental tradeoffs versus optimal function of organisms to some internal tradeoffs. The examples that he uses to support his conclusions show flaws in that these mostly discuss single environmental effects and immediate system responses. Optimal environmental conditions, however, requires at least two effects that result in a trade-off, so it is not surprising that his examples seem to contradict optimality and MEP. And the immediate response of a system to change can be very different than the response in steady state, for which MEP applies. This is specifically important to be considered in the context of the “cheater” problem. In summary, I do not think that Volk makes convincing arguments that contradict MEP, although I certainly agree that there is a lot more work to be done to fully recognize the great importance that thermodynamics and MEP play in shaping the Earth’s biosphere and its evolutionary history.
机译：Volk（Clim Change 85：3–4，2007）在对Kleidon（Clim Change 66：271–319，2004）的评论中得出结论，最大熵产生（MEP）与生物进化和生命的时间历史没有太大关系。在地球上。我认为他的大多数观点都没有道理，而是反映（a）缺乏对熵产生作为衡量整个系统（包括生物圈）运转的“通用货币”的中心重要性的认识，（b）对如何在全球熵预算中嵌入生物活动，以及（c）在最大化生产率的最佳环境条件和环境权衡导致的最佳环境条件与生物体在某些内部权衡下的最佳功能之间缺乏区别。他用来支持其结论的示例存在缺陷，因为这些缺陷主要讨论了单一的环境影响和直接的系统响应。但是，最佳的环境条件至少需要两个因素，这需要权衡取舍，因此他的例子似乎与最优性和MEP相矛盾也就不足为奇了。系统对变更的即时响应可能与适用MEP的稳态响应非常不同。在“骗子”问题的背景下考虑这一点特别重要。总而言之，我不认为Volk提出令人信服的论点与MEP相抵触，尽管我当然同意还有很多工作要做，以充分认识到热力学和MEP在塑造地球生物圈及其进化历史中的重要作用。 。

著录项

  • 来源
    《Climatic Change》 |2007年第4期|259-266|共8页
  • 作者

    Axel Kleidon;

  • 作者单位

    Biospheric Theory and Modelling Group Max-Planck-Institut für Biogeochemie Postfach 10 01 64 07701 Jena Germany;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号