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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Maximum entropy production, carbon assimilation, and the spatial organization of vegetation in river basins
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Maximum entropy production, carbon assimilation, and the spatial organization of vegetation in river basins

机译：流域最大熵产生，碳同化和植被的空间组织

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摘要

The spatial organization of functional vegetation types in river basins is a major determinant of their runoff production, biodiversity, and ecosystem services. The optimization of different objective functions has been suggested to control the adaptive behavior of plants and ecosystems, often without a compelling justification. Maximum entropy production (MEP), rooted in thermodynamics principles, provides a tool to justify the choice of the objective function controlling vegetation organization. The application of MEP at the ecosystem scale results in maximum productivity (i.e., maximum canopy photosynthesis) as the thermodynamic limit toward which the organization of vegetation appears to evolve. Maximum productivity, which incorporates complex hydrologic feedbacks, allows us to reproduce the spatial macroscopic organization of functional types of vegetation in a thoroughly monitored river basiny without the need for a reductionist description of the underlying microscopic dynamics. The methodology incorporates the stochastic characteristics of precipitation and the associated soil moisture on a spatially disaggregated framework. Our results suggest that the spatial organization of functional vegetation types in river basins naturally evolves toward configurations corresponding to dynamically accessible local maxima of the maximum productivity of the ecosystem.
机译：流域功能性植被类型的空间组织是径流生产，生物多样性和生态系统服务的主要决定因素。有人建议对不同的目标函数进行优化，以控制植物和生态系统的适应性行为，而这通常没有令人信服的理由。源自热力学原理的最大熵产生（MEP）提供了一种工具，可以证明选择控制植被组织的目标函数的合理性。 MEP在生态系统规模上的应用导致最大的生产力（即最大的冠层光合作用）作为植被组织朝着其发展的热力学极限。最大的生产力结合了复杂的水文反馈，使我们能够在受到彻底监测的河流盆地中再现植被功能类型的空间宏观组织，而无需对基本的微观动态进行简化的描述。该方法在空间分解框架上结合了降水的随机特征和相关的土壤水分。我们的研究结果表明，流域功能性植被类型的空间组织自然向着对应于生态系统最大生产力的动态可达局部最大值的配置演变。

著录项

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  • 作者

    Manuel del Jesus; Romano Foti; Andrea Rinaldo; Ignacio Rodriguez-lturbe;

  • 作者单位

    Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544,Environmental Hydraulics Institute "Instituto de Hidraulica (IH) Cantabria," Universidad de Cantabria, Parque Cientifico y Tecnologico de Cantabria (PCTCAN), 39011 Santander, Spain;

    Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544;

    Laboratory of Ecohydrology, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland,Dipartimento Ingegneria Civile, Edile ed Ambientale (ICEA), Universita di Padova, 35131 Padua, Italy;

    Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544;

  • 收录信息 美国《科学引文索引》(SCI);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
  • 关键词

    ecohydrology; ecology; vegetation patterns;

    机译：生态水文学生态;植被格局;

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