| 华南湿润区坡地氮素流失规律比较试验研究 |
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| 引用本文： | 黎坤,江涛,陈建耀,刘春玲.华南湿润区坡地氮素流失规律比较试验研究[J].生态环境,2011,20(3):447-451. |
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| 作者姓名： | 黎坤 江涛 陈建耀 刘春玲 |
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| 作者单位： | 1. 中山大学水资源与环境研究中心,广东,广州,510275;华南地区水循环与水安全广东省普通高校重点实验室,广东,广州,510275
2. 水利部珠江水利委员会珠江水利科学研究院,广东,广州,510611 |
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| 基金项目： | 国家自然科学基金项目，广东省水利科技推广项目 |
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| 摘 要： | 通过两个径流场的对比试验,研究了华南湿润地区针叶林坡面氮素随降雨径流的流失规律,结果表明,氮素流失量均与坡面径流量和降雨强度具有极显著的线性相关关系,在没有施肥的情况下,氮流失形态以氨氮、硝氮为主,总氮产出浓度随降雨径流的增大,逐步下降,最后趋于稳定。在施放尿素的情况下,氮素随径流的流失形态以氨氮、硝氮和溶解态的尿素为主,总氮的产出浓度呈先升高而后随降雨径流的增大逐渐减少最后趋于稳定的特性。
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| 关 键 词： | 坡地 氮素 流失规律 |
A comparative experiment of nitrogen loss from the humid hillside areas of the south China |
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| LI Kun,JIANG Tao,CHEN Jianyao,LIU Chunling.A comparative experiment of nitrogen loss from the humid hillside areas of the south China[J].Ecology and Environmnet,2011,20(3):447-451. |
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| Authors: | LI Kun JIANG Tao CHEN Jianyao LIU Chunling |
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| Institution: | LI Kun1,2,JIANG Tao1,CHEN Jianyao1,LIU Chunling3 1.Department of Water Resources and Environment,Sun Yat-sen University,Guangzhou 510275,China,2.Key Laboratory of Water cycle and water security in Southern China of Guangdong High Education Institute,3.Pearl River Hydraulic Research Institute,Guangzhou 510611,China. |
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| Abstract: | Thorough analysis is conducted on the relations between the loss of the nitrogen and precipitation changes in the hillside areas characterized by humid climate,the south China,based on experimental practices.The results indicate significant linear regressive relations between the loss of nitrogen,precipitation intensify and runoff variations.Without fertilization,the loss of the nitrogen is dominated by the loss of ammonia nitrogen and nitrate nitrogen,and the loss of the total nitrogen is decreasing when t... |
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| Keywords: | hillside areas nitrogen loss of the nitrogen |
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