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Spatial Variability Of Methane Emissions From Rice Fields And Implications For Experimental Design, M. A. K. Khalil, Christopher Lee Butenhoff

Physics Faculty Publications and Presentations

It is observed that side by side plots in rice fields, managed by the same practices, produce methane emissions that are often different by factors of 2 to 4. Similarly on a given day when many plots are sampled, the emissions from one plot may differ from another by factors of 3-4 on average. These large variations must be taken into account if these data are extrapolated to larger scales such as countries or the world. In this paper we analyze and delineate the nature of this variability. We distinguish temporal and spatial variability and examine the effects of both …