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| 苦草(Vallisneria natans)和黑藻(Hydrilla verticillata)对沉积物各形态磷垂直分布的影响 | |
| 引用本文： | 俞振飞,王国祥,王立志,李振国,杭子清,魏宏农.苦草(Vallisneria natans)和黑藻(Hydrilla verticillata)对沉积物各形态磷垂直分布的影响[J].湖泊科学,2012,24(3):378-383. |
| 作者姓名： | 俞振飞 王国祥 王立志 李振国 杭子清 魏宏农 |
| 作者单位： | 1. 南京师范大学地理科学学院,江苏省环境演变与生态建设重点实验室,南京210046 2. 南京师范大学地理科学学院,江苏省环境演变与生态建设重点实验室,南京210046;山东省水土保持与环境保育重点实验室,临沂276000 3. 南京师范大学地理科学学院,江苏省环境演变与生态建设重点实验室,南京210046;湖南科技大学建筑与城乡规划学院,湘潭411201 |
| 基金项目： | 国家自然科学基金，江苏省重大科技支撑项目 |
| 摘 要： | 采用沉水植物苦草(V.natans)和黑藻(H.verticillata)作为研究对象,在其旺盛生长期测定群落内外上覆水及沉积物各形态磷的含量,以探究不同根系特点的沉水植物对沉积物中各形态磷垂直分布的影响.结果表明:实验进行30 d后苦草和黑藻组沉积物总磷(TP)、无机磷(IP)和氢氧化钠提取磷(NaOH-P)含量在垂直方向均呈现不同程度的降低.苦草和黑藻组沉积物TP的含量在4.5 cm深度处降低幅度最大,较对照组分别下降了58.91和36.46 mg/kg;IP含量分别在沉积物6.0和3.0 cm深度处降低幅度最大,较对照组分别降低了85.41和57.41 mg/kg.总体来看,沉水植物苦草对沉积物各形态磷含量降低的影响大于黑藻. |
| 关 键 词： | 沉水植物 沉积物 磷形态 苦草 黑藻 垂直分布 |
| 收稿时间： | 2011/6/15 0:00:00 |
| 修稿时间： | 2011/9/11 0:00:00 |
Effects of macrophytes Vallisneria natans and Hydrilla verticillata on the vertical distribution of different phosphorus fractions in sediments |
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| YU Zhenfei,WANG Guoxiang,WANG Lizhi,LI Zhenguo,HANG Ziqing and WEI Hongnong.Effects of macrophytes Vallisneria natans and Hydrilla verticillata on the vertical distribution of different phosphorus fractions in sediments[J].Journal of Lake Science,2012,24(3):378-383. | |
| Authors: | YU Zhenfei WANG Guoxiang WANG Lizhi LI Zhenguo HANG Ziqing and WEI Hongnong |
| Institution: | 1(1: College of Geographical Science,Nanjing Normal University,Jiangsu Key Laboratory of Environmental Change and Ecological Construction,Nanjing 210046,P.R.China)(2: Shandong Provincial Key Laboratory of Soil Conservation and Environmental Protection,Linyi 276000,P.R.China)(3: Architecture and Urban Planning School,Hunan University of Science and Technology,Xiangtan 411201,P.R.China) |
| Abstract: | In order to study the effects of different root systems in different submerged macrophytes on the vertical distribution of phosphorus fractions in sediments,V.natans and H.verticillata were applied and phosphorus concentrations in overlying water and underneath sediments were investigated during the growth season.Results showed that the contents of total phosphorus(TP),inorganic phosphorus(IP) and NaOH-P fractions in sediments decreased vertically in different levels during both submerged macrophytic groups.Both submerged macrophytic groups reached their maximum decreased values at the depth of 4.5cm,decreased by 58.91 and 36.46mg/kg,respectively,comparing with the control.The maximum decreased values of IP in groups of V.natans and H.verticillata appeared at the depth of 6.0and 3.0cm,and they decreased by 85.41and 57.41mg/kg,respectively,comparing with the control.The results indicated that the submerged macrophyte V.natans has higher ability in lowering down phosphorus fractions than H.verticillata in sediments. |
| Keywords: | Submerged macrophyte sediment phosphorus fraction Vallisneria natans Hydrilla verticillata vertical distribution |
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