| 小城镇河流沉积物无机氮迁移循环研究 |
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| 引用本文： | 刘伟,陈振楼,王军,刘杰,王东启,张兴正.小城镇河流沉积物无机氮迁移循环研究[J].农业环境科学学报,2004,23(3):520-524. |
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| 作者姓名： | 刘伟 陈振楼 王军 刘杰 王东启 张兴正 |
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| 作者单位： | 华东师范大学,教育部地理信息中心重点实验室,上海,200062 |
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| 基金项目： | 国家自然科学基金(40131020)，国家自然科学基金(40173030)，上海青年科技启明星跟踪计划(01QMH1406)，上海市科委基础研究重点项目(02QJ14029) |
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| 摘 要： | 通过对河流柱状沉积物在通气下和厌气下进行避光短期静置模拟培养试验，研究了小城镇河流底泥-上覆水体系无机氮的迁移特征。结果表明，沉积物有机质降解对NH4的迁移有很大影响，通气和厌气下NH4的迁移均是向上覆水方向，NO3的迁移均是向沉积物方向，由于通气条件和静水环境引起的沉积物无机氮硝化作用和反硝化作用是影响沉积物一水界面体系氮迁移的最重要因素。
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| 关 键 词： | 沉积物 孔隙水 无机形态氮 有机质降解 硝化和反硝化 |
| 文章编号： | 1672-2043(2004)03-0520-05 |
| 修稿时间： | 2003年11月19 |
Cycling Characters of Inorganic Nitrogen Between Water and Sediment of River in a Small Town |
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| LIU Wei,CHEN Zhen lou,WANG Jun,LIU Jie,WANG Dong qi,ZHANG Xing zheng.Cycling Characters of Inorganic Nitrogen Between Water and Sediment of River in a Small Town[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2004,23(3):520-524. |
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| Authors: | LIU Wei CHEN Zhen lou WANG Jun LIU Jie WANG Dong qi ZHANG Xing zheng |
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| Abstract: | With rapid development of economy, the environment of rivers and lakes in small towns turn aggravation. To remedy eutrophication, it is a key problem of the feature of cycle of inorganic nitrogen in water and sediment. In 2003, we took some samples of both water and column- sediments from a small river in a small town, and we modeled them in quietude under aerobic and anaerobic conditions. The tested results showed that the decomposition of organic matter much affected the cycle of under aerobic and anaerobic conditions, while moved up to water from sediment, but intake sediment from water under both aerobic and anaerobic conditions, revealing the cycle of inorganic nitrogen was much different in sediment and pore water. Nitrification and de- nitrification much affect the cycle of inorganic nitrogen in sediments derived from both aerobic and anaerobic conditions. |
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| Keywords: | sediment and pore water inorganic nitrogen decomposition of organic matter nitrification and de- nitrification |
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