水土保持通报2018，Vol.38Issue(2)：46-52,封2,8.DOI:10.13961/j.cnki.stbctb.2018.02.008
三峡库区湖北段非点源污染氮磷排放时空分布特征
Spatio-temporal Distribution of Pollution Loads from Agricultural Non-point Sources Nitrogen and Phosphorus in Three Gorges Reservoir Area of Hubei Province
摘要
Abstract
[Objective] In order to understand the non-point source pollution in Three Gorges Reservoir area of Hubei Province to find the main pollution sources and the key control area.[Methods] The non-point source pollutions of nitrogen and phosphorus emissions in 1990,2000,2005 and 2010 were calculated with the rainfall erosivity coefficient and simulated by river export coefficient model,the temporal and spatial distribution characteristics of nitrogen and phosphorus emissions of various pollution sources and their contribution rates were analyzed.[Results] TN emissions was more than 2 500 t and TP emissions was more than 250 t,and they both got the highest in 2000.The average annual TN emissions were 3 612.78 t/a and TP was 393.75 t/a,the annual TN and TP emission intensity were 3.10,0.34 kg/(hm2 · a).Therefore the study area was mainly nitrogen polluted.Paddy field and dry land were the main causes of nitrogen pollution source,the followed source was rural population.Paddy field and dry land were the main contributions of phosphorus pollution,pig breeding was the next one.[Conclusion] The non-point source pollution in the studv area had its spatial distribution characterized by its low pollution in both sides and high in the middle part.Badong district was recognized as the key control area of nitrogen and phosphorus emissions.关键词
三峡库区湖北段/非点源污染/氮/磷/输出系数模型/时空分布Key words
Three Gorges Reservoir area of Hubei Province/agricultural non-point source pollution/nitrogen/phosphorus/export coefficient model/spatial-temporal distribution分类
资源环境引用本文复制引用
王萌,刘云,李春蕾,肖文发..三峡库区湖北段非点源污染氮磷排放时空分布特征[J].水土保持通报,2018,38(2):46-52,封2,8.基金项目
2014国家气象公益行业项目“气候和土地利用变化对森林的影响及适应对策”(GYHY201406035) （GYHY201406035）
科技创新服务能力建设—科研基地建设—林果业生态环境功能提升协同创新中心(2011协同创新中心)(市级)(PXM2017_014207_000024) （2011协同创新中心）
