%0 Journal Article
%T The study of the rate loss of nitrogenous non-point source pollution loads in different precipitation levels<br>不同降雨条件下非点源污染氮负荷入河系数研究
%A CHENG Hongguang
%A HAO Fanghu
%A REN Xiyan
%A YANG Shengtian
%A XIONG Wen
%A LEI Shaoping
%A <br>程红光
%A 郝芳华
%A 任希岩
%A 杨胜天
%A 熊文
%A 雷少平
%J 环境科学学报
%D 2006
%I 
%X A SWAT model was calibrated using data from runoff, sediment and nitrogen pollution in 1998 in the Heihe river basin. The conception of rate loss in the watershed (RL) for non-point source pollution loads was presented, and the RLs of farmland, town, grass, bush and forest were calculated under different precipitation levels. The comparative study of the RLs of N pollution which was calculated by two methods (the SWAT model and the export coefficient method) was also shown; the correlation numbers were up to 0.9 (the significance level is 0.005). In the end, it was demonstrated that the different adsorptive N RLs for different land uses in descending order were that farmland, town, grass, bush and forest. The descending order of dissolved N RLs were shown as farmland, grass, bush, forest and town.
%K non-point source pollution
%K land use
%K lost rate
%K Heihe fiver basin<br>非点源污染
%K 土地利用
%K 入河系数
%K 黑河流域
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=7C0CC4688897FFBE&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=38B194292C032A66&sid=5A735990D5DE8BF4&eid=21D8CE17EE5EE354&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=17&reference_num=37