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Simulating County-Level Crop Yields in the Conterminous United States Using the Community Land Model: The Effects of Optimizing Irrigation and Fertilization

Sources:

Journal of Advances in Modeling Earth Systems

Authors:

Guoyong Leng

Xuesong Zhang

Maoyi Huang

Qichun Yang

Rashid Rafique

Ghassem R. Asrar

L. Ruby Leung

Date:

19 December 2016

Representing agricultural systems explicitly in Earth system models is important for understanding the water-energy-food nexus under climate change.The study applied Version 4.5 of the Community Land Model (CLM) at a 0.125 degree resolution to provide the first county-scale validation of the model in simulating crop yields over the Conterminous United States (CONUS). This study focused on corn and soybean that are both important grain crops and biofuel feedstocks (corn for bioethanol; soybean for biodiesel).