Modeling coupled biogeochemical cycles
Modeling coupled biogeochemical cycles
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DOI：
10.1890/090223
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发表时间：
2011-02-01
影响因子：
10.3
通讯作者：
Rastetter, Edward B.
中科院分区：
文献类型：
--
作者：
Rastetter, Edward B.
生物体需要大约30种基本元素才能维持生命。这些元素的循环通过生物体的特定生理需求相互耦合。在这里，我对比了几种模拟耦合生物地球化学循环的方法，使用了一个道格拉斯冷杉森林生态系统中碳、氮和磷积累的例子，以及该森林对大气二氧化碳浓度升高和全球变暖的响应。这些方法中哪一种最合适还有待讨论，而且可能取决于背景；然而，如果科学家要了解生态系统以及它们可能如何应对不断变化的全球环境，就必须回答这个问题。
Organisms require about 30 essential elements to sustain life. The cycles of these elements are coupled to one another through the specific physiological requirements of the organisms. Here, I contrast several approaches to modeling coupled biogeochemical cycles using an example of carbon, nitrogen, and phosphorus accumulation in a Douglas-fir (Pseudotsuga menziesii) forest ecosystem and the response of that forest to elevated atmospheric carbon dioxide concentrations and global warming. Which of these approaches is most appropriate is subject to debate and probably depends on context; nevertheless, this question must be answered if scientists are to understand ecosystems and how they might respond to a changing global environment.