Collaborative research: Greenhouse gas balance of urban temperate wetlands

该项目的目标是测量湿地的温室气体(GHG)排放量，并量化天气、植被结构和水位动态对湿地系统温室气体收支组成部分的影响。要做到这一点，将结合使用实验和建模任务。两个不同的城市温带湿地生态系统，一个在俄亥俄州的淡水湿地，一个在新泽西州的潮汐盐沼，将被研究。方法结合了对两个湿地系统空气中二氧化碳和甲烷的直接测量，对小室中甲烷排放的测量，以及在现有生物圈-大气模型的背景下对湿地植被结构和生态生理学的测量。由于将调查的两个湿地已经建成或修复，将评估生态工程的所有方面对温室气体排放的影响。在湿地收集的数据将被用来对生态系统模型中的温室气体排放模块进行参数化。这可以作为一种规划工具，在不同的气候、湿地设计和管理实践中预测温室气体预算。除了两名博士生外，参加路易斯·斯托克斯少数民族参与联盟(LSAMP)的两名本科生将通过这个项目接受气候变化科学方面的培训。

The goal of this project is to measure Greenhouse Gas (GHG) emissions from wetlands and quantify the effects of weather, vegetation structure, and water level dynamics on components of the GHG budget of the wetland systems. To do this a combination of experimental and modeling tasks will be employed. Two distinct urban temperate wetland ecosystems, one in Ohio, a freshwater wetland, and one in New Jersey, a tidal salt marsh, will be studied. Methods combine direct measurements of CO2 and CH4 in the air over the two wetland systems, measurements of CH4 emissions in chambers, and measurements of wetland vegetation structure and ecophysiology in the context of an existing biosphere-atmosphere model. As the two wetlands to be investigated have been constructed or restored, all aspects of ecological engineering will be assessed for their effects on GHG emissions. The data collected in the wetlands will be used to parameterize the GHG emission module in the ecosystem model. This can be used as a planning tool to predict GHG budgets in different climates, wetland designs, and management practices. In addition to two Ph.D. candidates, two undergraduate students participating in the Louis Stokes Alliances for Minority Participation (LSAMP) will be trained in climate change science through this project.Bruce K. Hamilton6/29/10