| 引用本文: | 黎坤,江涛,卓慕宁,陈建耀,刘春玲.华南坡地单场降雨氮素的迁移特征及来源分析.湖泊科学,2011,23(6):888-892. DOI:10.18307/2011.0610 |
| LI Kun,JIANG Tao,ZHUO Muning,CHEN Jianyao,LIU Chunling.Transportation and sources of nitrogen in a single rainfall event in the hillsides of South China. J. Lake Sci.2011,23(6):888-892. DOI:10.18307/2011.0610 |
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| 华南坡地单场降雨氮素的迁移特征及来源分析 |
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黎坤1,2, 江涛1,2, 卓慕宁3, 陈建耀1,2, 刘春玲4
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1.中山大学水资源与环境研究中心, 广州 510275;2.华南地区水循环与水安全广东省普通高校重点实验室, 广州 510275;3.广东省生态环境与土壤研究所, 广州 510650;4.水利部珠江水利委员会珠江水利科学研究院, 广州 510611
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| 摘要: |
| 通过两个径流场的对比试验, 研究了华南坡地氮素在某场降雨下的迁移特征和来源, 结果表明, 在没有施肥的情况下, 氮素的迁移形态以铵氮、硝氮为主, 总氮、硝氮和亚硝氮的迁移以地下下渗迁移为主, 铵氮的迁移以地表迁移为主;在施放尿素的情况下, 氮素的迁移形态以溶解态的尿素、铵氮和硝氮为主, 总氮、溶解态尿素和铵氮的迁移以地表径流迁移为主, 硝氮、亚硝氮、有机氮的迁移以地下下渗迁移为主.在天然情况下, 降雨带来的氮沉降已经成为试验坡地氮素迁移的主要来源之一。 |
| 关键词: 氮素 迁移特征 氮沉降 来源 |
| DOI：10.18307/2011.0610 |
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| 基金项目:国家自然科学基金项目(41071020);广东省水利科技推广项目(2009)联合资助 |
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| Transportation and sources of nitrogen in a single rainfall event in the hillsides of South China |
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LI Kun1,2, JIANG Tao1,2, ZHUO Muning3, CHEN Jianyao1,2, LIU Chunling4
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1.Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, P.R.China;2.Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute, Sun Yat-sen University, Guangzhou 510275, P.R.China;3.Guangdong Institute of Eco-environment and Soil Sciences, Guangzhou 510650, P.R.China;4.Pearl River Hydraulic Research Institute, Guangzhou 510611, P.R.China
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| Abstract: |
| Comparisons have been done on the experiments about the transportation and sources of nitrogen in the hillsides within a single rainfall event in south China.Results indicate that the release of the nitrogen is represented by ammonia nitrogen and ni-trate nitrogen.Transportation of the total nitrogen, nitrate nitrogen and nitrous nitrogen is dominated by infiltration process, and that of the ammonia nitrogen is dominated by the surface migration.In the case of the urea release, the migration of the nitrogen is dominated by the dissolved form of urea, ammonia nitrogen and nitrate nitrogen.The total nitrogen, dissolved urea and ammonia nitrogen is characterized by the surface migration.The transportation of the nitrate nitrogen, nitrous nitrogen and organic nitrogen is dominated by the underground infiltration process.Without human interference, rainfall-induced nitrogen deposition has become one of the main sources of the nitrogen in the experiment field. |
| Key words: Nitrogen transportation properties nitrogen deposition sources |
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