Impact of DEM mesh size on AnnAGNPS runoff and sediment predictions for a small-scale hilly watershed
DEM格网尺度对AnnAGNPS预测山地小流域径流和物质输出的影响

The input of nutrients from agricultural non-point sources(AGNPSs),sediment delivery and worsening of water quality have become challenging issues threatening water security,human health and natural ecosystems in the Three Gorges Reservoir area.The agricultural non-point source(AGNPS)model is a useful tool for analysis of agricultural watershed management scenarios.The accuracy of agricultural nonpoint source pollution models depends to a great extent on how well model input spatial parameters describe the ...