2024年7月21日 星期日
富营养湖泊大型围隔和围栏中磷的动态
The dynamic of phosphorus in large-scale enclosure and fence in an eutrophic lake
2001年 第10卷 第1期 页码[44-47]    下载全文[0.7MB]  
摘要

对武汉东湖大型围隔和围栏中的水生植被和不同形态的磷近 2年的调查分析结果表明 :在围隔中的水生维管束植物得到恢复、生物量明显大于对照区的情况下 ,水中的总磷 (TP)、溶解活性磷 (DRP)、颗粒性磷 (PP)浓度明显低于对照区 ,水生维管束植物的良好生长是导致磷浓度降低的主要因素 ,总溶解磷 (TDP)、溶解非活性磷 (DNP)浓度则与对照区无显著差异 ;围隔 (栏 )及对照区中TP、PP的浓度秋高冬低 ,TDP浓度秋、冬季较高 ,春、夏季较低 ,DNP浓度春季较高 ,冬季较低 ;TP中PP含量约为TDP的 4~ 6倍 ,DRP与DNP的含量相近或稍有差别。

Abstract

The aquatic vegetation and concentration of various state phosphorus were analysed in two large scale enclosures and one fence in East Lake of Wuhan from July, 1993 to February, 1995.When the aquatic vascular plants in the enclosures were restored and their biomass in the enclosures were obvious higher than those in the control′ s, the concentrations of TP ( total phosphorus) , DRP ( dissolved reactive phosphorus) and PP ( particulate phosphorus) in the enclosures were obvious lower than those in the control′ s. The major reasons which led their concentrations to decrease were the aquatic vascular plants growing well in the enclosures. The concentrations of TDP ( total dissolved phosphorus) and DNP ( dissolved nonreactive phosphorus) in the enclosures were not obvious different from those in the control′ s. The concentrations of TP and PP were higher in autumn, lower in winter, the concentration of TDP was higher in autumn and winter, lower in spring and summer, the concentration of DNP was higher in spring, lower in winter in the enclosures, fence and the control. PP content was as about 4 to 6 times large as TDP′ s, DRP content was close to DNP′ s or a bit difference from DNP′ s.

关键词富营养湖泊; 大型围隔; 围栏; ; 动态
Key wordseutrophic lake; large-scale enclosure, fence; phosphorus; dynamic
作者马剑敏1, 靳 萍1, 李益健2
所在单位1.河南师范大学生命科学学院, 河南 新乡 453002;
2.武汉大学环境科学系, 湖北 武汉 430072
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基金项目国家“八五”科技攻关项目( 85-908-01-02) 部分内容