水资源保护2016，Vol.32Issue(2)：119-122,128,5.DOI:10.3880/j.issn.1004-6933.2016.02.024
沉积物－水界面中可交换态氮对不同菹草密度的响应
Effects of different densities of Potamogeton crispus L.on exchangeable nitrogen at sediment-water interface
摘要
Abstract
In order to investigate the effects of submerged plants on the exchangeable nitrogen across the interfaces between sediments and water in eutrophic shallow lakes, the concentrations of NO-3-N and NH3-N were detected with the continuous flow-injection analyzer through simulation experiments.With other environmental indicators taken into account, the effects of different densities of Potamogeton crispus L. ( 0 g, 150 g, and 300 g, respectively) on TN, NO-3-N, and NH3-N at the sediment-water interface were examined.The experimental results show that Patamogeton crispus L.increased the oxidation-reduction potential ( Eh) and decreased the pH of the interstitial water.Moreover, the higher the density of Patamogeton crispus L.was, the more significantly the Eh and pH in the interstitial water changed.According to the results of one-way analysis of variance, there was a significant difference (p<0.05) in TN in the interstitial water with 0g and 300g of Patamogeton crispus L.The higher the density of Patamogeton crispus L.was, the greater the amounts of TN, NO-3-N, and NH3-N in the interstitial water, and the greater the amounts of fixed ammonium, organic nitrogen, NH3-N, and NO-3-N that were removed from surface sediments.关键词
菹草/沉积物/间隙水/硝氮/氨氮Key words
Potamogeton crispus L./sediments/interstitial water/nitrate nitrogen/ammonia nitrogen分类
资源环境引用本文复制引用
燕文明,麻林,向龙,杨家亮..沉积物－水界面中可交换态氮对不同菹草密度的响应[J].水资源保护,2016,32(2):119-122,128,5.基金项目
湖南省水利基金（201524507）；国家自然科学基金 （）
