Workshop: Trace Gas Emissions from Plants; January 21-24, 1990; Pacific Grove, California

许多气体在大气和生物圈之间交换。二氧化碳、水蒸气和氧气直接参与光合作用，这是生物圈中最重要的定量过程。与光合作用有关的气体交换已被详细研究过，并且对这些交换的生物化学和生物物理学有了很多了解。除了这些主要气体外，还有许多微量气体在大气和生物圈之间交换。其中一些微量气体，如甲烷，会影响大气的辐射特性，并可能在很大程度上导致所预测的大气变暖，即温室效应。其他碳氢化合物如异戊二烯和单萜烯影响大气化学，并通过光化学导致臭氧和一氧化碳的产生。硫和氮气体在生态系统酸化和养分循环中发挥重要作用，也可能通过云凝结核的形成影响气候。目前，植物生理学界对植物排放的这些微量气体所做的工作很少。因此，建议举办一个为期三天的研讨会，收集现有的信息，并确定需要进行哪些研究来了解植物的微量气体排放。这些信息将被收集和出版，以刺激和帮助指导这一领域的研究。

Many gases are exchanged between the atmosphere and the biosphere. Carbon dioxide, water vapor, and oxygen are directly involved in photosynthesis, the most quantitatively important process in the biosphere. The exchange of the gases involved with photosynthesis have been studied in detail and much is known about the biochemistry and biophysics of these exchanges. In addition to these major gases many trace gases are exchanged between the atmosphere and the biosphere. Some of these trace gases, such as methane, affect the radiative properties of the atmosphere and can contribute substantially to the predicted warming of the atmosphere, the greenhouse effect. Other hydrocarbons such as isoprene and monoterpenes affect atmospheric chemistry and lead to the production of ozone and carbon monoxide through photochemistry. Sulfur and nitrogen gases play important roles in ecosystem acidification and nutrient cycling and may also influence climate through the formation of cloud condensation nuclei. Very little work is currently being done by the plant physiology community on these trace gas emissions from plants. A three day workshop is therefore proposed to assemble the existing information, and determine what research is required to understand trace gas emissions from plants. This information will be assembled and published to stimulate and help guide research in this area.