2000•China Environmental ScienceRequires access
Study on the nitrate-N pollution in the groundwater vertical profile in Tangshan agricultural area
Zhang Si-con
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Abstract
At present, nitrogen pollution in the groundwater caused by fertilizer irrigation in the agricultural area has become an environmental problem of interest to the people. LEACHN mathematical model is used to simulate the transport and transform of nitrogen in the soil under fertilizer irrigation condition with the production practice of agricultural area in Tangshan City. Two-dimension groundwater quantity and quality model in the vertical profile is made to carry out the simulation and analysis of nitrate-N pollution of the groundwater in the typical profile. The results indicate that the nitrate-N leakage loss under the root zone caused by fertilizer irrigation could creat the pollution of shallow groundwater in Tangshan agricultural area.