LEEF Soil Flux Packages

"With the LI-8100A, I have been able to develop a high-quality unit on gas flux."
- Dr. Holly Dolliver, University of Wisconsin—River Falls

Read Her Story

Both LEEF Soil Flux packages (the Carbon Monitoring System and the Soil Flux System) feature LI-COR’s LI-8100A Automated Soil CO2 Flux System, with exclusive software and a unique design that addresses the critical considerations for making accurate soil CO2 flux measurements. Learn more about this system at the LI-8100A product page.

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Teaching with the LI-8100A

8100A and Chamber

How can students learn about Global Climate Change? The LEEF Soil Flux systems allow students to have hands-on experience taking measurements, analyzing data, and making scientific conclusions regarding climate change. Soil CO2 flux is a major component of the total carbon budget, but is often overlooked and understudied because of the difficulty in making accurate measurements.

Why soil flux measurements? Because the soil holds more carbon than the atmosphere and vegetation combined! Soil CO2 flux to the atmosphere far exceeds (nearly 10 times) the amount of CO2 released from fossil fuels and other related emissions. Production of CO2 in soil is tightly coupled with the soil organic content and microbial population as well as the moisture, rain event, temperature, and plant growth activity. These factors, along with spatial heterogeneity in the soil properties, lead to a great deal of variability of soil CO2 flux.

Applications

The two LEEF Soil Flux Systems allow faculty and students to perform many applications beyond just soil flux measurements. The following examples can be used as field exercises for teaching and undergraduate research:

  • Learn about carbon storage and the theory behind soil CO2 flux measurements
  • Make fast, easy, and repeatable survey measurements
  • survey
  • Choose a variety of ecosystems to study such as flat vs. sloping grassland, a forested area, an urban area or an agricultural field
  • Study the spatial variability of soil CO2 flux over these areas and learn how to:
    • Cover large areas and take quick survey measurements
    • Map changes in soil CO2 flux by repeating the same measurements over a period of weeks
    • Identify variability during various times of the day and under different conditions when multiplexing (i.e., day-night, wet-dry)
  • Estimate the flux rate of trace gases by collecting samples from the same air stream used to measure CO2 fluxes
  • Use the analyzer for small volume gas sampling
  • Learn the importance and theory behind Net Carbon Exchange measurements
  • Perform net ecosystem exchange measurements
  • Measure CO2 concentration levels at different heights in a canopy

In order to meet the needs of various undergraduate institutions in the United States and Canada, LI-COR offers two different LEEF Soil Flux packages.

Which system is best for you? The LEEF Carbon Monitoring System is designed for multiple applications and offers the flexibility for students to perform undergraduate research in as many as 10 different topics or to be used by faculty in a diverse curriculum. The LEEF Soil Flux System is designed for faculty and students who want to concentrate on soil flux measurements. This system can be expanded at any time with the addition of accessories to fit your research and educational needs.


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