Global Change in C-N-P-S Coupled Biogeochemical Cycles in the Land-Coastal Margin System

陆地-海岸边缘系统中C-N-P-S耦合生物地球化学循环的全球变化

• 批准号: 9316133
• 负责人: Fred Mackenzie
• 金额: $ 29.15万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-02-01 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316133&HistoricalAwards=false
• 关键词: Global; Change; Coupled; Biogeochemical; Cycles

9316133 Mackenzie The main goals of the proposed research are to evaluate responses of the coupled carbon, nitrogen, phosphorus and sulfur biogeochemical cycles to climate and global change in the land- coastal margin system on decadal to millennial time scales, and the contribution of this system to global environmental change. This system will be in the future one of the world's most disturbed because of human activities. Because of the great complexity of the land-coastal margin system, it is necessary that observational programs for individual ecosystems be complemented by data synthesis and modeling of behavior of the system on a global scale. Herein we propose a research program to "aid" in the accomplishment of this task. Carbon, nitrogen, phosphorus and sulfur are the four main building blocks (excluding oxygen and hydrogen) of organic matter, and they are incorporated within certain proportions, known as the Redfield ratios, by marine plankton and terrestrial vegetation. Thus, study of these elemental components of the Earth-surface system is important in the context of global change and biotic responses to change.

小行星9316133麦肯齐 本研究的主要目的是评估陆地-海岸边缘系统在十年到千年时间尺度上碳、氮、磷和硫耦合地球化学循环对气候和全球变化的响应，以及该系统对全球环境变化的贡献。 由于人类活动，这一系统将来将成为世界上最受干扰的系统之一。 由于陆地-海岸边缘系统的复杂性，有必要通过全球尺度系统行为的数据综合和建模来补充针对单个生态系统的观测方案。 在此，我们提出了一个研究计划，以“援助”在完成这项任务。 碳、氮、磷和硫是有机物的四个主要组成部分（不包括氧和氢），它们被海洋浮游生物和陆地植被以一定的比例（称为雷德菲尔德比率）结合在一起。 因此，在全球变化和生物对变化的反应的背景下，研究地球表面系统的这些元素组成部分是重要的。