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| 南亚热带富营养化浅水湖泊底泥磷的赋存形态及其对湖水的贡献 | |
| 引用本文： | 谭镇,李传红,刘正文.南亚热带富营养化浅水湖泊底泥磷的赋存形态及其对湖水的贡献[J].仲恺农业技术学院学报,2011,24(4):22-26. |
| 作者姓名： | 谭镇 李传红 刘正文 |
| 作者单位： | 1. 惠州市惠城区环境科学研究所,广东惠州,516001 2. 惠州市环境科学研究所,广东惠州,516001 3. 暨南大学水生生物研究中心,广东广州,510632 |
| 基金项目： | 广东省科技计划，暨南大学人才启动基金 |
| 摘 要： | 以南亚热带富营养化湖泊星湖为研究对象，对其4个子湖区底泥磷进行连续分级提取与测定．结果表明，星湖底泥总磷（Total phosphorus，TP）含量为352．32—710．33mg／kg，平均含量为505．82mg／kg，其含量大小依次为波海湖〉青莲湖〉仙女湖〉中心湖，其中生物可利用磷（Bio—available pbospborus，BAP）占TP的39．12％-52．59％，底泥TP主要由有机磷（Organic phosphorus，Org-P）、金属氧化物结合态磷（Metal oxides bound phosphorus，NaOH-P）和钙结合态磷（Calcium bound phosphoms，HCl-P）组成，其次还有少量可还原态磷（Redueible phosphorus，BD-P）和弱吸附态磷（Loosely absorbed phosphorus，NH4Cl-P）．不同形态磷的含量依次为：Org-P〉NaOH-P〉HCl-P〉BD-P〉NH4Cl-P．在底泥水-土界面存在一个明显的可溶性磷浓度梯度，为底泥磷向湖水释放提供了条件． |
| 关 键 词： | 星湖 磷形态 底泥 富营养化 |
Phosphorus fractious in surface sediment and their contributions to water in a southern sub-tropical shallow lake |
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| TAN Zhen,LI Chuan-hong,LIU Zheng-wen.Phosphorus fractious in surface sediment and their contributions to water in a southern sub-tropical shallow lake[J].Journal of Zhongkai Agrotechnical College,2011,24(4):22-26. | |
| Authors: | TAN Zhen LI Chuan-hong LIU Zheng-wen |
| Institution: | TAN Zhen1,LI Chuan-hong2,LIU Zheng-wen3,4(1.Huicheng District Institute of Environmental Sciences,Huizhou 516001,China,2.Huizhou Institute of Environmental Sciences,3.Research Centre of Hydrobiology,Jinan University,Guangzhou 510632,4.Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China) |
| Abstract: | The forms of phosphorus in the surface sediments of a typical southern sub-tropical shallow lake- Xinghu Lake were investigated by sequential chemical extraction and determinated. The results showed that the contents of total phosphorus （TP） forms in the surfaces sediments ranged from 352. 32 mg/kg to 710. 33 mg/kg in Xinghu Lake with an average of 505.82 mg/kg for all sediment sample. The concentration of TP in sediment of Xinghu Lake followed the order： Bohai Lake 〉 Qinglian Lake 〉 Xiannv Lake 〉 Zhongxin Lake. The contribution of bio-available phosphorus （BAP） to total sedimentary phosphorus ranged from 39. 12% to 52. 59%. The total sediment phosphorus consisted mainly of metal oxides bound phosphorus （NaOH-P）, organic phosphorus （Org-P） and calcium bound phosphorus （HCl-P）, and also contained small amounts of reducible phosphorus （BD-P） and loosely absorbed phosphorus （ NH4Cl-P）. The rank order according to the mean concentration of P-fraction in Xinghu Lake was Org-P 〉 NaOH-P 〉 HCl-P 〉 BD-P 〉 NH4Cl-P. There was a gradient of the soluble reactive phosphorus （SRP） at sediment-water interface, which indicated that the potential SRP could diffuse from sediment into the overlying water for algae＇s growth. |
| Keywords: | Xinghu Lake phosphorus forms sediments eutrophication |
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