Improvement of RZWQM2-P model to mitigate phosphorus loss from cropland to surface water bodies
Agricultural soils in the humid temperate regions (Ontario and Quebec) of Canada are the major source of non-point pollution from Phosphorus in freshwater rivers and lakes. The incidence of cyanobacterial blooms has increased dramatically in the last decade, which has been linked to P and N enrichment by subsurface drain effluent. Agricultural soils, treated with chemical fertilizers, manures, or biosolids, are deemed to be major non-point P sources in the Great Lakes and other areas. Subsurface drainage is a major conduit for P transported from agricultural soils in humid temperature regions of Canada. Various approaches have been developed to regulate agricultural management and mitigation of P pollution. One of them is to develop computer models that can accurately simulate and assess P loss from agricultural lands. Based on most recent science found in the fate and transport of P from soil to water, we developed and released (in 2020) a state-of-the-art phosphorus management model (RZWQM2-P) to simulate dissolved and particulate P losses in runoff and subsurface drainage. This newly developed model has attracted attention of researchers in USA, Island, and China.
Voir la description complète du projetZhiming Qi
Ohio State University
Engineering
Water; Environmental Science and Technology; Agriculture and Food
McGill University
Globalink Research Award
