SGER: Coupling of Arctic Atmospheric Chemistry and Tundra Ecophysiology by Biogenic Volatile Organic Compound Fluxes

这项探索性研究小额赠款（SGER）将为北极苔原生态系统中生物源性挥发性有机化合物（BVOC）通量的测量提供支持。这些测量将与美国国家科学基金会资助的一个现有项目一起进行，该项目正在研究阿拉斯加图里克湖图里克野外站附近的Imnavait Creek流域的营养物质和碳流。实地活动将在冻土带生态系统生长季节的高峰期（7月下旬/ 8月初）进行，以便能够使用现有项目的设备直接测量异戊二烯通量。这些测量将补充叶片水平数据，以获得其他双挥发性有机化合物排放的信息，如更高的萜烯。由于高纬度变暖，北极冻土带生态系统正在发生重大变化，BVOC的测量有可能成为这些变化的敏感指标，因为其排放在很大程度上取决于生态系统的状态。该项目解决了对气候变化非常敏感的生态系统中大气过程的重要问题，因此将造福社会。该奖项支持职业生涯早期的科学家及时获得研究机会。

This Small Grant for Exploratory Research (SGER) will provide support for measurements of biogenic volatile organic compound (BVOC) fluxes in an Arctic tundra ecosystem. These measurements are to be made in conjunction with an existing NSF-funded project that is studying flows of nutrients and carbon at the Imnavait Creek watershed near the Toolik Field Station at Toolik Lake, Alaska. The field campaign is to be conducted at the peak of the tundra ecosystem growing season (late July/early August) to enable direct measurements of the isoprene fluxes using equipment from the existing project. These measurements will be supplemented with leaf level data to gain information about other BVOC emissions such as higher terpenes. Arctic tundra ecosystems are undergoing significant changes due to high latitude warming, and BVOC measurements have the potential to be a sensitive indicator of these changes since emissions depend strongly on the state of the ecosystem.This project addresses important issues regarding atmospheric processes in ecosystems that are very sensitive to climate change, and will thus benefit society. This award supports an early career scientist for a timely research opportunity.