| 刊名 | Journal of Landscape Research |
| 作者 | TIAN Yaowu， LIU Yali， ZHANG Chulei， ZHANG Zizheng， LI Xiaolin |
| 作者单位 | College of Forestry Henan Forestry Ecological Construction Development Center |
| DOI | DOI:10.16785/j.issn 1943-989x.2023.5.019 |
| 年份 | 2023 |
| 刊期 | 5 |
| 页码 | 85-88 |
| 关键词 | AnnAGNPS model， RUNOFF ，Sediment loading ，Nutrient loadings， Funiu ，Mountain area ，PERFORMANCE |
| 摘要 | The main goal of this study was to evaluate the performance of AnnAGNPS(Annualized AGricultural NonPoint Source)pollution model,in calculating runoff,sediment loading and nutrient loadings for Funiu Mountain area.Most of the model input parameters were sourced from Luanchuan Forest Ecology Station(LFES)in Funiu Mountain area.The data on 23 storms in 2018 was used to calibrate the model and the data on 33 storms in 2019 for validation.The whole evaluation consisted of determining the coefficient of determination(R2),Nash-Sutcliffe coefficient of efficiency(E),and the percentage volume error(VE).Results showed that the runoff volumes were underpredicted by 5.0%with R2 of 0.93(P<0.05)during calibration and underpredicted by 5.3%with R2 of 0.90(P<0.05)during validation.But sediment loading was able to produce a moderate result.The model underpredicted the daily sediment loading by 15.1%with R2 of 0.63(P<0.05)during calibration and 13.5%with R2 of 0.66(P<0.05)during validation.Nitrogen loading was overpredicted by 20.3%with R2=0.68(P<0.05),and phosphorus loading performance was slightly poor with R2=0.65(P<0.05)during validation.In general,the model performed well in simulating runoff compared to sediment loading and nutrient loadings. |
