农业环境科学学报Issue(7)：1379-1387,9.DOI:10.11654/jaes.2014.07.018
基于AnnAGNPS模型的胶东半岛大沽河流域非点源污染模拟研究
Simulation of Non- point Source Pollution in Dagu Watershed,Jiaodong Peninsula Based on AnnAGNPS Model
摘要
Abstract
Non-point source pollution is characteristized with wide scale, great casualness, and poor predictability. In this study, the An-nAGNPS(Annualized Agricultural Non-Point Source)model was calibrated and validated in Dagu watershed of Jiaodong Peninsula with ob-served runoff and dissolved nitrogen data. The spatio-temperal distribution of dissolved nitrogen load was then estimated using the calibrat-ed model. Annual average runoff and dissolved nitrogen load from Dagu watershed into Jiaozhou bay were 3.58×108 m3 and 4.27×103 t, re-spectively, occurring mainly during flood-season from June to September. Both were influenced by meterological factors such as seasonal precipitation distribution, intensive human activities such as reservoir and dam operation, farmland irrigation and sewage waste discharge. Spatially, the dissolved nitrogen load was greater in southern than in northern part, which was due to agricultural activities and industrial and domestic sewage discharges. Fertilization contributed mainly to dissolved nitrogen load in Dagu watershed, followed by sewage waste discharge from residential areas. Based on scenario simulation, reducing chemical fertilizers and practicing conservation tillage could de-crease nutrient load from Dagu watershed without lowering crop production.关键词
AnnAGNPS模型/非点源污染/情景分析/大沽河流域Key words
AnnAGNPS model/non-point source pollution/scenario analysis/Dagu watershed分类
资源环境引用本文复制引用
王晓利,姜德娟,张华..基于AnnAGNPS模型的胶东半岛大沽河流域非点源污染模拟研究[J].农业环境科学学报,2014,(7):1379-1387,9.基金项目
国家自然科学基金项目（40901028）；水利部公益性行业科研专项经费项目（201301089）；中国科学院重点部署项目 （）
