| 模拟降雨条件下农田径流中氮的流失过程 |
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| 引用本文： | 黄满湘,章申,唐以剑,陈喜保.模拟降雨条件下农田径流中氮的流失过程[J].生态环境,2001,10(1):6-10. |
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| 作者姓名： | 黄满湘 章申 唐以剑 陈喜保 |
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| 作者单位： | 中国科学院地理科学与资源研究所, |
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| 基金项目： | 国家自然科学基金重大项目（39790100） |
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| 摘 要： | 在室内降雨模拟试验条件下，研究暴雨径流中农田氮素养分流失及施肥处理的影响。结果表明，农田暴雨径流氮养分的流失量与累积径流量成正相关；施用NH
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| 关 键 词： | 人工降雨 农田径流 氮流失 富集系数 |
| 文章编号： | 1008-181X（2001）01-0006-05 |
| 修稿时间： | 2000年12月2日 |
Nitrogen losses from farm
runoff under simulated rainfall conditions |
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| HUANG Man-xiang,ZHANG Shen,TANG Yi-jian,CHEN Xi-bao.Nitrogen losses from farm
runoff under simulated rainfall conditions[J].Ecology and Environmnet,2001,10(1):6-10. |
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| Authors: | HUANG Man-xiang ZHANG Shen TANG Yi-jian CHEN Xi-bao |
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| Abstract: | Rainfall simulation experiment was performed to evaluate nitrogen losses from farmland and show the effect of fertilizer application on nitrogen concentration and losses of runoff. As expected, cumulative N loss of runoff is directly correlated with cumulative runoff; dissolve nitrogen concentration and the dissolve nitrogen lost significantly increase (P=0.01), but particulate nitrogen concentration and particulate nitrogen lost do not significantly increase (P=0.1) in farmland runoff of fertilizer application of NH4HCO3. Particulate nitrogen lost account for 476.3~488.7 mg/m2, and particulate nitrogen is the main form of N losses. Nutrient of N is enriched in eroded sediment, the logarithm of N enrichment ratio (ER) is negatively correlated with the logarithm of accumulated sediment discharge: log(ER)=0.770-0.300 log(SED). |
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| Keywords: | simulated rainfall farm runoff nitrogen loss enrichment ratio (ER) |
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