| 引用本文: | 赵海超,王圣瑞,金相灿,步青云,刘景辉.黑藻对沉积物及土壤中不同形态磷的利用与转化.湖泊科学,2008,20(3):315-322. DOI:10.18307/2008.0308 |
| ZHAO Hai-chao,WANG Sheng-rui,JIN Xiang-can,BU Qing-yun,LIU Jing-hui.Availability and transferring of phosphorus forms by Hydrilla verticillata in the sediment and soil. J. Lake Sci.2008,20(3):315-322. DOI:10.18307/2008.0308 |
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| 黑藻对沉积物及土壤中不同形态磷的利用与转化 |
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赵海超1,2, 王圣瑞1, 金相灿1, 步青云1, 刘景辉3
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1.中国环境科学研究院湖泊生态环境创新基地/国家环境保护湖泊污染控制重点实验室, 北京 100012;2.河北北方学院农业科学系, 张家口 075131;3.内蒙古农业大学农学院, 呼和浩特 010018
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| 摘要: |
| 利用同一区域湖泊和河流沉积物及土壤培养黑藻,运用化学连续提取法对底质中磷的不同形态进行分离,同时分析黑藻生物量及底质中上覆水和间隙水中磷浓度的变化,并对底质中生物可利用磷进行了估算,揭示沉水植物对底质中不同形态磷的利用与转化规律.结果表明,底质中弱吸附态磷、可还原性磷(RSP)是黑藻利用的主要磷形态;土壤与沉积物相比不利于黑藻生长,营养水平高的河流沉积物有利于黑藻初期生长,但容易使其早衰;沉积物作底质上覆水和间隙水磷浓度主要受底质中RSP含量的控制;土壤作底质上覆水和间隙水磷浓度主要受弱吸附态磷控制;黑藻能促进底质中磷向可利用态转化;黑藻对土壤中生物可利用磷的利用率比沉积物低. |
| 关键词: 沉积物 磷形态 沉水植物 黑藻 可利用性 |
| DOI：10.18307/2008.0308 |
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| 基金项目:国家重点基础研究发展规划项目(2002CB412304)资助. |
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| Availability and transferring of phosphorus forms by Hydrilla verticillata in the sediment and soil |
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ZHAO Hai-chao1,2, WANG Sheng-rui1, JIN Xiang-can1, BU Qing-yun1, LIU Jing-hui3
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1.State Environmental Protection Key Laboratory for Lake Pollution Control & Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, P.R.China;2.Department of Agricultural Science, Hebei North University, Zhangjiakou 075131, P.R.China;3.College of Agronomy, Inner Mongolia Agriculture University, Huhhot 010018, P.R.China
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| Abstract: |
| Availability of phosphorus forms of submerged plant in the sediment and soil has been studied using the submerged plant
Hydrilla verticillata culturing in different trophic sediments and soil. Different phosphorus forms in sediments and soil were
separated by the chemical sequential extraction methods, at the same time the biomass of Hydrilla verticillata, concentrations of
phosphorus in overlying water and in interstitial water were also analyzed. Amount of the bioavailable particular phosphorus was
estimated by the formula of age available particular phosphorus. The results showed that labile phosphorus (P) and reducible soluble
phosphorus (RSP) were the main phosphorus forms for Hydrilla verticillata utilization. The sediment is beneficial for the growth and
fade of Hydrilla verticillata at the growth early stage. Phosphorus concentrations of the overlying water and interstitial water were
affected mainly by the RSP concentrations in sediments. Phosphorus concentrations of interstitial water in soil were affected mainly
by its labile P concentrations. The submerged plant Hydrilla verticillata promoted available phosphorus transforming, and its
utilization rate for available particular phosphorus in soil is lower than that in sediments. |
| Key words: Sediments phosphorus forms submerged plant Hydrilla verticillata availability |
