Denitrification in riparian buffer zones: the role of floodplain hydrology
Denitrification in riparian buffer zones: the role of floodplain hydrology
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DOI：
10.1002/(sici)1099-1085(199907)13:10
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发表时间：
1999-07-01
影响因子：
3.2
通讯作者：
Haycock, NE
中科院分区：
文献类型：
--
作者：
Burt, TP;Matchett, LS;Haycock, NE
这里描述的研究的广泛目的是评估在河岸带的反硝化作用，改善地下水污染，通过硝酸盐的损失，并作为一个潜在的一氧化二氮的来源到大气中。在英国牛津附近的塔梅河洪泛区的Cuddesdon Mill确定了一个合适的河岸带。测量了水和硝酸盐从耕地通过河岸带进入河流。对反硝化作用的测定技术进行了试验和应用，并测定了反硝化作用的控制因素。虽然有相当大的潜力，在现场的反硝化作用，这是没有实现的，因为大部分的水移动离开农田绕过河岸带，直接进入河流通过泉水或通过砾石透镜体下的洪泛平原土壤。该网站的管理将不会减少硝酸盐淋溶，除非洪泛区水文可以大大修改，主要结论是，硝酸盐缓冲区将只有效地运作，水文的网站是适当的。版权所有（C）1999约翰威利父子有限公司。
The broad purpose of the study described here was to assess the role of denitrification in riparian zones in ameliorating groundwater pollution through nitrate loss, and as a potential source of nitrous oxide to the atmosphere. A suitable riparian zone was identified at Cuddesdon Mill on the River Thame floodplain near Oxford, England. Measurements were made of water and nitrate moving from arable land through the riparian zone and into the river. Techniques to measure denitrification were tested and applied, and the factors controlling denitrification measured. While there was considerable potential for denitrification at the site, this was not realized because much of the water moving off the farmland bypassed the riparian zone, entering the river directly via springs or through gravel lenses beneath the floodplain soil. Management of this site would not reduce nitrate leaching unless the floodplain hydrology could be substantially modified, and the main conclusion is that nitrate buffer zones will only operate efficiently where the hydrology of the site is appropriate. Copyright (C) 1999 John Wiley & Sons, Ltd.