Modelling animal waste pathogen transport from agricultural land to streams

2013 International Conferences on Geological, Geographical, Aerospace and Earth Sciences

Pandey, Pramod K.^1 ; Soupir, Michelle L.^2 ; Ikenberry, Charles^2

Department of Population Health and Reproduction, University of California, Davis, United States^1

Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, United States^2

关键词: Agricultural land;    Ambient waters;    Common practices;    Developed countries;    Hydrological modeling;    Manure applications;    Pathogen indicators;    Watershed scale;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/19/1/012014/pdf
DOI  :  10.1088/1755-1315/19/1/012014

来源: IOP

【 摘 要 】

The transport of animal waste pathogens from crop land to streams can potentially elevate pathogen levels in stream water. Applying animal manure into crop land as fertilizers is a common practice in developing as well as in developed countries. Manure application into the crop land, however, can cause potential human health. To control pathogen levels in ambient water bodies such as streams, improving our understanding of pathogen transport at farm scale as well as at watershed scale is required. To understand the impacts of crop land receiving animal waste as fertilizers on stream's pathogen levels, here we investigate pathogen indicator transport at watershed scale. We exploited watershed scale hydrological model to estimate the transport of pathogens from the crop land to streams. Pathogen indicator levels (i.e., E. coli levels) in the stream water were predicted. With certain assumptions, model results are reasonable. This study can be used as guidelines for developing the models for calculating the impacts of crop land's animal manure on stream water.