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| 太湖地区小流域水文过程对氮素迁移的影响 | |
| 引用本文： | 刘宏伟,余钟波,崔广柏. 太湖地区小流域水文过程对氮素迁移的影响[J]. 安徽农业科学, 2009, 37(28): 13759-13762 |
| 作者姓名： | 刘宏伟 余钟波 崔广柏 |
| 作者单位： | 1. 河海大学水文水资源与水利工程科学国家重点实验室,江苏南京,210098;河海大学水文水资源学院,江苏南京,210098 2. 河海大学水文水资源与水利工程科学国家重点实验室,江苏南京,210098 3. 河海大学水文水资源学院,江苏南京,210098 |
| 基金项目： | 国家自然科学基金资助项目，教育部长江学者和创新团队发展计划 |
| 摘 要： | 分析了太湖地区农业小流域逐日降雨径流和暴雨事件对氮素营养物输出的影响规律。结果表明：总氮、铵态氮和硝态氮流失日平均浓度随降雨量和径流量的增大而增大，总氮最大，硝态氮次之，铵态氮最小。暴雨事件中，径流起涨初期氮素浓度迅速升高，之后逐渐降低，在退水时期会有所反弹。暴雨事件中的瞬时流量与氮素输出浓度关系按流量大小可分为3段：在小流量段，氯素浓度低且数量平稳；中流量段，各态氮素流失浓度变化大；高流量段，总氮和铵态氮流失浓度显著降低并逐渐平稳，硝态氮浓度略为降低但变化较大。 |
| 关 键 词： | 非点源污染 氮素流失 农业小流域 太湖流域 |
Effects of the Hydrological Processes on Nitrogen Migration in a Small Watershed on the Taihu Lake |
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| LIU Hong-wei et al. Effects of the Hydrological Processes on Nitrogen Migration in a Small Watershed on the Taihu Lake[J]. Journal of Anhui Agricultural Sciences, 2009, 37(28): 13759-13762 | |
| Authors: | LIU Hong-wei et al |
| Affiliation: | LIU Hong-wei et al(State Key Laboratory of Hydrology-Water Resources , Hydraulic Engineering,Hehai University,Nanjing,Jiangsu 210098) |
| Abstract: | The effects of daily rainfall runoff and heavy rains events on nutrient nitrogen output in the Taihu Lake agricultural watershed were analyzed.The results showed that the daily mean concentration in runoff of total nitrogen(TN),ammonium nitrogen,and nitrate nitrogen increased with the daily rainfall and runoff increasing,and the loss of TN was the most,then followed by nitrate nitrogen and ammonium nitrogen.During the storm events,nitrogen concentration increased fasdy at beginning of runoff,then decreased ... |
| Keywords: | Non-point sources pollution Nitrogen loss Agricultural small watershed Taihu Lake drainage basin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |