Agriculture is a major contributor of greenhouse gases. Certain management practices can substantially reduce greenhouse gas emissions, but these practices are not always economically viable for farmers.
Oxidation of soil organic carbon due to agricultural management, sources of methane in agriculture, conversion of soil nitrogen to nitrous oxide, radiative forcing of greenhouse gases, carbon sequestration in agricultural soils, global warming potential from agricultural ecosystems. Other key words include carbon cycle, fertilizer, organic agriculture, no-till, carbon sources and carbon sinks.
Short Essay, Minute Paper, Land Management Activity
1 Michigan State University, East Lansing, MI 48824
We thank numerous people at the W.K. Kellogg Biological Station (KBS), including Phil Robertson, Laurel Hartley and Sara Syswerda for inspiration, Drew Corbin for organizing years of data collection and everyone involved in the GK-12 Program, including graduate fellows and teachers. We thank the National Science Foundation and the Long Term Ecological Research network for providing funding for research and educational activities at KBS. We thank Charlene D’Avanzo for providing guidance in developing this activity and Katie Button, Jarad Mellard, Gary Mittelbach, Todd Robinson and Lindsey Walters for providing comments on earlier versions of the activity. Two anonymous reviewers were very supportive and provided excellent suggestions for revisions. This is KBS contribution #1444.
Wilke, B. J. and J. Kunkle. February 2009, posting date. What does agriculture have to do with climate change? Teaching Issues and Experiments in Ecology, Vol. 6: Issues Figure Set #3 [online]. http://tiee.ecoed.net/vol/v6/figure_sets/climate_change/abstract.html
Agricultural management practices in the Long Term Ecological Research (LTER) experiment at the W.K. Kellogg Biological Station (KBS) range from high intensity (Conventional Row Crop Management) to low intensity (Old Growth Forest). Many of these practices are visible in this mid-summer photo. Alfalfa, which will be harvested for animal feed, is growing in the foreground. Corn harvested for grain is growing on the right side of the photo while an old field successional plot is on the left side. Poplar trees, which are harvested for biomass, and hardwood forests are visible in the background. Photo taken from the W.K. Kellogg Biological Station Long Term Ecological Research website (www.lter.kbs.msu.edu).
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