| 向海沼泽湿地土壤中硝态氮的水平运移规律 |
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| 引用本文： | 白军红,欧阳华,邓伟,王庆改. 向海沼泽湿地土壤中硝态氮的水平运移规律[J]. 中国环境科学, 2004, 24(4): 0-0 |
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| 作者姓名： | 白军红 欧阳华 邓伟 王庆改 |
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| 作者单位： | 1.中国科学院地理科学与资源研究所 北京100101;2.中国科学院东北地理与农业生态研究所 吉林长春130012 |
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| 基金项目： | 中国科学院湿地创新项目(KZCX-302) |
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| 摘 要： | 选择封闭性的付老文泡湿地和开放性的二百方子湿地作为两个典型区,以KNO3为示踪剂,模拟研究了硝态氮在向海沼泽湿地中的水平运移过程.结果表明,沼泽湿地土壤中硝态氮的运移通量与运移距离显著负相关,并随运移距离的增加呈一阶衰减指数变化;而沼泽湿地土壤中硝态氮的运移通量与土壤水扩散率及土壤含水量都呈显著正相关关系,并随土壤水扩散率的增加呈指数增长.
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| 关 键 词： | 沼泽湿地 土壤 硝态氮 水平运移 |
| 文章编号： | 1000-6923(2004)04-0414-05 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2003-10-10 |
Horizontal movement rule of nitrate nitrogen in Xianghai marsh wetland soil |
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| BAI Jun-hong,,OUYANG Hua,DENG Wei,WANG Qing-gai. Horizontal movement rule of nitrate nitrogen in Xianghai marsh wetland soil[J]. China Environmental Science, 2004, 24(4): 0-0 |
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| Authors: | BAI Jun-hong OUYANG Hua DENG Wei WANG Qing-gai |
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| Affiliation: | BAI Jun-hong1,2,OUYANG Hua1,DENG Wei2,WANG Qing-gai1 |
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| Abstract: | Choosing the close Fulaowenpao wetland and open Erbaifangzi wetland as two typical areas, the horizontal movement processes of nitrate nitrogen in Xianghai wetland were studied simulatively with KNO3 tracer. The movement fluxes of nitrate nitrogen in the wetland soil had obvious negative correlation with the movement distances, and varied in one-order exponent decay with increase of the distances; but these fluxes had obvious positive correlation with diffusibility and content of water in soil and the exponent increased with the increase of soil water diffusibility. |
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| Keywords: | marsh wetland soils nitrate nitrogen horizontal movement |
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