[1]李英俊,王克勤,宋维峰,等.自然降雨条件下农田地表径流氮素流失特征研究[J].水土保持研究,2010,17(04):19-23.
　LI Ying-jun,WANG Ke-qin,SONG Wei-feng,et al.Nitrogen Loss in the Farmland Surface Runoff under the Natural Rainfall Conditions[J].Research of Soil and Water Conservation,2010,17(04):19-23.
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自然降雨条件下农田地表径流氮素流失特征研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 17 期数: 2010年04期 页码: 19-23 栏目: 出版日期: 2010-08-20
Title:
Nitrogen Loss in the Farmland Surface Runoff under the Natural Rainfall Conditions
作者:
李英俊1, 王克勤1, 宋维峰1, 郭圣浩1, 李太兴2, 李云蛟3
1. 西南林学院 环境科学与工程系, 昆明 650224;
2. 云南省玉溪市水利局, 云南 玉溪 653100;
3. 云南省澄江县水利局, 云南 澄江 653102
Author(s):
LI Ying-jun1, WANG Ke-qin1, SONG Wei-feng1, GUO Sheng-hao1, LI Tai-xing2, LI Yun-jiao3
1. Department of Environmental Sciences&Engineering, Southwest Forestry College, Kunming 650224, China;
2. Yuxi Municipal Hydrological Burea, Yuxi, yunnan 653100;
3. Chengjiang County Hydrological Burea, Chengjiang, yunnan 653102, China
关键词:
自然降雨; 地表径流; 氮素流失
Keywords:
natural rainfall; surface runoff; nitrogen loss
分类号:
S157
摘要:
为探讨自然降雨条件下，农田地表径流及氮素的流失特征，以澄江尖山河流域典型坡地为研究对象，采用标准径流小区和微型试验小区的研究方法，对农田地表径流及径流中氮素流失进行了分析研究。结果表明：降雨量和降雨强度是产生地表径流的主要原因，雨季应做好坡地的保护工作；地表径流中氮素流失的最高浓度可达到30.72mg/L；农田地表径流中可溶态氮素的流失形态主要为硝态氮和铵态氮，硝态氮流失浓度约占全氮的4%~28%，而氨态氮流失浓度约占全氮的1%~8%；地表径流中氮素累积流失负荷在0.45~1.18kg/hm2，而流失系数仅为0.10%~0.12%。
Abstract:
In the present study,we studied the characteristics of nitrogen loss in the slope farmland surface runoff under the natural rainfall conditions through the standard runoff plots and micro-plot methods in the Jianshan River Basin in Chengjiang county.The results showed that the quantity and intensity of rainfall were the main factors causing surface runoff.Therefore,some precaution measures should be done in rainy seasons.The maximum nitrogen concentration in surface runoff reached to 30.72mg/L.Nitrate-nitrogen occupied l4%～28% of total nitrogen loss,whereas ammonia-nitrogen accounts only 1%～8% of total nitrogen loss.In conclusion,the accumulative total nitrogen loss in surface runoff was 0.45～1.18kg/hm2,and the loss coefficient was only 0.1%～0.12%.

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备注/Memo

收稿日期:2010-3-18;
基金项目:国家自然科学基金项目（30660037）;云南省自然科学基金项目（2006D0041M）;云南省科技计划项目（2006SG20）;西南林学院水土保持重点学科
作者简介:李英俊（1982- ），男，陕西岐山人，硕士研究生，研究方向：流域治理。E-mail：liyingjun524@163.com
通讯作者:宋维峰（1967- ），男，甘肃会宁人，教授，博士，主要从事生态环境工程和森林水文等研究工作。E-mail：songwf85@ 126.com

更新日期/Last Update: 1900-01-01