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AUTHORS: Zhuoqing Li, Loren M. Smith, Scott T. McMurry - Department of Integrative Biology, Oklahoma State University; Dale W. Daniel, Stearns, Conrad and Schmidt Consulting Engineers, Inc.
ABSTRACT: We developed models to measure greenhouse gas (GHG) flux in playa wetlands and their immediate watersheds in the Rainwater Basin of Nebraska. Playas are shallow depressional recharge wetlands that primarily receive water through runoff. Therefore, any land use treatment in playa watersheds affects GHG flux. Flus was modelled in three land uses: ACEP (Formerly WRP), Reference condition, and Cropland. The Wetlands Reserve Program is the dominant conservation program in the Rainwater Basin of Nebraska. The WRP land use generally had lower greenhouse gas flux emissions than other two land uses. We developed two series of models to simulate GHG flux. One model sets dynamically monitors and assesses the GHG flux based on 8-day composite MODIS products issued by USGS. Another model set simulates and predicts GHG flux transformation according to alternative environmental or program scenarios, to make policy makers and landowners more clearly understand what would be changed after conservation.
