Learn how soil gas flux and eddy covariance measurements complement each other. For those measuring CO2/CH4 soil gas fluxes, eddy covariance is an excellent method for scaling up to automated ecosystem-level measurements. For those using eddy covariance to measure ecosystem-level CO2/CH4 gas exchange, soil gas flux measurements can help partition ecosystem fluxes between soil and vegetation. This seminar will explore each system and its many benefits to the other.
Leaf area plays a critical role in the carbon exchange between an ecosystem and the atmosphere, and the leaf area index (LAI) measurement enhances eddy covariance analysis. Often LAI is estimated, measured annually, or once per project. This seminar will demonstrate how LAI, when measured easily and accurately, can be a useful and dynamic variable when analyzing your ecosystem gas exchange data.
Plant physiologists or ecologists focused on leaf-level CO2 and H2O measurements may look to scale those measurements to an entire field or ecosystem for comparison. Similarly, a researcher looking at ecosystem-level measurements may want to zoom in on CO2 and H2O exchange at the leaf-level to help partition ecosystem fluxes between vegetation and soil. This seminar will explore how combining these measurements can enhance the understanding of an ecosystem and its vegetation.
Soil respiration and CO2, CH4, and N2O fluxes are quite variable across even the most homogenous soil. Above-ground vegetation constitutes several of the pathways and drivers that control the amount of CO2, CH4, N2O, and H2O moving into and out of the soil. This seminar will cover how combining soil gas flux measurements with measurements of above ground processes such as growth, canopy structure, water usage, photosynthesis, and plant stress can help to explain soil gas flux results.