Construction and analysis of mathematical models for energy flow and nutrient cycling in ecosystems

生态系统能量流和养分循环数学模型的构建与分析

• 批准号: 385794-2010
• 负责人: Wang, Hao
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=528693
• 关键词: Construction; analysis; mathematical; models; energy

Carbon (C), nitrogen (N), and phosphorus (P) are vital constituents in biomass: C supplies energy to cells, N is an essential component of proteins, and P is an essential component of nucleic acids. The scarcity of any of these elements can severely restrict organism and population growth. Hence, in nutrient deficient environments the consideration of nutrient cycling, or stoichiometry, is essential for population models. Ecological stoichiometry has proven to be an important new approach for understanding ecological interactions. With its emphasis on elemental matter, stoichiometric theory covers all biological scales, from molecules to the biosphere, and allows the construction of mechanistic models via rigorous chemical and physical constraints. Mechanistically derived stoichiometric models can explain many fundamental paradoxes in ecology and generate new mathematical challenges.

碳(C)、氮(N)和磷(P)是生物质的重要组成部分：C为细胞提供能量，N是蛋白质的基本成分，P是核酸的基本成分。这些元素中的任何一种的缺乏都会严重限制生物体和种群的增长。因此，在营养缺乏的环境中，营养循环或化学计量学的考虑对于种群模型是必不可少的。生态化学计量学已被证明是理解生态相互作用的一种重要的新方法。化学计量学理论强调元素物质，涵盖了从分子到生物圈的所有生物尺度，并允许通过严格的化学和物理约束来构建机械模型。机械推导的化学计量模型可以解释生态学中的许多基本悖论，并产生新的数学挑战。