Plant Respiration in Elevated CO2: Mechanisms of Response

高浓度二氧化碳下的植物呼吸：响应机制

• 批准号: 9603940
• 负责人: Kevin Griffin
• 金额: $ 25.61万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9603940&HistoricalAwards=false
• 关键词: Plant; Respiration; Elevated; CO2; Mechanisms

Griffin 9603940 Photosynthesis and respiration by plants are two biological processes that transfer CO into and out of year, respectively), and substantially greater than the annual net increment to the atmosphere from human activities such as fossil fuel burrung and deforestation (approximately 3.2 billion metric tons per year, combined). The resulting changes in atmospheric CO2 can feedback and change the rate at which plants exchange carbon with the atmosphere. As such, the rate and/or extent of future changes in greenhouse gas emissions are influenced by this feedback loop between plants and the atmosphere. long-term effects on plant respiration, it is still fundamentally unclear why it does. Accordingly the goal effects the rate of plant respiration, thereby providing a more substantial capacity to predict how CO earth~s atmosphere in the 21~ century.

植物的光合作用和呼吸作用是两种生物过程，分别将CO向年内和向外转移，并且大大大于人类活动（如化石燃料燃烧和森林砍伐）每年对大气的净增量（加起来每年约32亿公吨）。由此产生的大气中二氧化碳的变化可以反馈并改变植物与大气交换碳的速率。因此，未来温室气体排放变化的速率和/或程度受到植物和大气之间这种反馈回路的影响。对植物呼吸的长期影响，目前还不清楚为什么会这样。因此，目标影响植物呼吸速率，从而为预测21世纪地球大气CO的变化提供了更可靠的能力。