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瓦埠湖沉积物中氮与磷赋存形态分析
引用本文:潘成荣,李,凌,叶琳琳,张之源.瓦埠湖沉积物中氮与磷赋存形态分析[J].水资源保护,2007,23(4):10-14.
作者姓名:潘成荣      叶琳琳  张之源
作者单位:1. 河海大学水生态环境模拟中心,江苏,南京,210098;安徽省环境科学研究院,安徽,合肥,230061
2. 河海大学水生态环境模拟中心,江苏,南京,210098
3. 合肥工业大学资源与环境工程学院,安徽,合肥,230009
4. 安徽省环境保护局,安徽,合肥,230061
基金项目:安徽省自然科学基金;安徽省优秀青年科技基金
摘    要:利用连续提取法研究了瓦埠湖沉积物中磷的赋存形态和氮的组成特征。结果显示:瓦埠湖沉积物中总磷含量为293~874 mg/kg,平均为470 mg/kg,总磷主要由无机磷组成;在沉积物的提取磷中铁结合态磷为主要赋存形态;铁磷、钙磷、铝磷的相对百分含量指示出该湖泊的磷源自污染较少的区域。瓦埠湖沉积物中总氮的含量为208~464 mg/kg,平均为265 mg/kg,氮的主要组成为有机氮,有机氮、有机指数等显示该湖泊属于清洁类型,未遭受污染。瓦埠湖流域的社会与自然状况的调查结果、湖泊底泥的有机碳氮比等均表明湖泊营养物质来自面源,各指标含量在空间分布的特点与相关性的差异,说明了物质沉积存在重力分离与水动力作用的过程。

关 键 词:瓦埠湖  沉积物      赋存形态
文章编号:1004-6933(2007)04-0010-05
收稿时间:2006-06-28
修稿时间:2006年6月28日

Existing forms of phosphorus and nitrogen in sediments of Wabuhu Lake
PAN Cheng-rong,LI Ling,YE Lin-lin,ZHANG Zhi-yuan.Existing forms of phosphorus and nitrogen in sediments of Wabuhu Lake[J].Water Resources Protection,2007,23(4):10-14.
Authors:PAN Cheng-rong  LI Ling  YE Lin-lin  ZHANG Zhi-yuan
Affiliation:1. Center for Eco-environrnental Modeling, Hohai University, Nanjing 210098, China ; 2. Auhui Institute of Environmental Science, Hefei 230061, China ; 3. School of Resources and Environment, Hefei University of Technology, Hefei 230009, China ; 4. Environmental Protection Bureau in Anhui Province, Hefei 230061, China
Abstract:The existing forms of phosphorus and nitrogen in sediments of Wabuhu Lake were investigated by sequential extraction method.The concentrations of total phosphorus(TP) in sediment ranged from 293 to 874 mg/kg,with the average value of 470 mg/kg,composed mainly of inorganic phosphorus,and the Fe-bound P was the main existing form of inorganic phosphorus.The relative percentage of Fe-P,Ca-P,Al-P indicates that the phosphorus originated from less polluted region.The concentrations of total nitrogen(TN) in sediment ranged from 208 to 464 mg/kg,with the average value of 265 mg/kg,and TN was composed mainly of organic nitrogen.The organic nitrogen and organic index show that the Wabuhu Lake is healthy and has not been polluted.The social and natural condition of Wabuhu Basin and the mean TOC/TN ratio of the sediment showed that the nutrients come from non-point sources.The differences of spatial distribution of the indexes and correlation difference show that the function of gravitational separation and hydrodynamics is available in the sedimentation of nutrients.
Keywords:Wabuhu Lake  sediment  phosphorus  nitrogen  existing form
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