A Grassland Nitrogen Flow Simulation Model

A dynamic simulation model of nitrogen flow in a grassland ecosystem has been developed. State variables in the model include the nitrogen in the following major components: soil ammonium, soil nitrate, live roots, dead roots, soil organic matter, live tops, and litter. Belowground components are subdivided into four depth layers. The model includes a simple producer-decomposer submodel, but the nitrogen sections have also been incorporated into the ELM model.

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