According to the result of simulated runoff experiment in laboratory, the dynamic movements of the mineral nitrogen s transport by surface runoff and leaching are studied. Meanwhile, the Effective Depth of Interaction (EDI) of runoff with soil mineral nitrogen is analyzed and confirmed. It is validated that the process of soil nitrogen loss by erosion is restricted by interaction of soil nitrogen with rainfall and runoff. There are much more soil mineral nitrogen loss by runoff than that by sediment. The co...
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