欢迎来到天天文库
浏览记录
ID:53747103
大小:375.60 KB
页数:6页
时间:2020-04-22
《马来眼子菜群丛对太湖不同湖区沉积物磷形态的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国环境科学2014,34(7):1872-1877ChinaEnvironmentaIScience马来眼子菜群丛对太湖不同湖区沉积物磷形态的影响李振国,-,王国祥,马久远,张佳,欧媛(1-南京师范大学地理科学学院,江苏南京210023;2瑚南科技大学地理系,湖南湘潭411201)摘要:采用磷分级提取的方法对太湖贡湖湾、南部湖区马来眼子菜(Potamogetonmalaianus)群落内外的沉积物样品进行了采集和分析.调查了沉积物中的不同形态磷的垂直分布状况,研究马来眼子菜群落对沉积物磷迁移转化的影响.结果表明:植物群丛对沉积物
2、铁铝磷(Fe/AI—P)的影响在贡湖湾和南太湖表现不同.贡湖湾马来眼子菜群丛内部沉积物Fe/AI—P高于群落外部的27.6%,差异性显著(P3、转化为Ca-P,因此ca_P在表层沉积物中呈上升趋势;南太湖沉积物中ca-P含量较高,在植物影响下ca_P有一定量的释放,因此crp在表层沉积物中呈下降趋势.关键词:磷形态;沉积物:马来眼子菜;太湖中图分类号:x17l文献标识码:A文章编号:1000—6923(2014)07—1872—06TheinfluenceofPotamogetonmalaianuscommunityonsedimentaryphosphorusfractionindiferentsitesofLakeTaihu.LIZhen.guo,,WANGGuo.x4、iang,MAJiu—yuan,,ZHANGJia,OUYuan(1.SchoolofGeographicalScience,NanjingNormalUniversity,Nanjing210023,China;2.DepartmentofGeography,ScienceandTechnologyofHunanUniversity,Xiangtan411201,China).ChinaEnvironmentalScience,2014,34(7):1872-1877Abstract:Tounderstandtheefectof5、thesubmergedmacrophytePotamogetonmalaianusonthesedimentaryphosphorus(P)fractioninLakeTaihu,China,variousformsofPinPmalaianusvegetatedandnon—vegetatedareaswerequantifiedwiththestandardmeasurementandtest(SMT)approachinsurfacesediments(0~40cm)fromthenortheast(Gonghubay)a6、ndthesouthlakeregions.ResultsshowedthatinGonghubay,Fe/A1一PinPmalaianusvegetatedareasweresignificantlyhigher<0.05)incomparisonwiththenon-vegetatedareas.Howeverinthesouthlake,Fe/A1-Pinthevegetatedareasweresignificantlylower(P<0.05)incomparisonwiththenon—vegetatedareas.O7、Pinthevegetatedareasweregreatlydecreasedincomparisonwiththenon-vegetatedareainthesouthlake<0.05).TheeffectofPmalaianusonthesedimentaryCa-PinGonghubayandthesouthlakewaswithinO~15cm.ItisconcludedthatthesubmergedmacrophytemalaianushasancleareffectontheretentionofPnutrien8、ts.Keywords:phosphorusfraction;sediment;Potamogetonmalaianus;LakeTaihu沉积物在浅水湖泊营养盐循环中扮演了重物,不同结合态的磷具有不同的地球化学行为钔.要角色,当外源污染被切断后,
3、转化为Ca-P,因此ca_P在表层沉积物中呈上升趋势;南太湖沉积物中ca-P含量较高,在植物影响下ca_P有一定量的释放,因此crp在表层沉积物中呈下降趋势.关键词:磷形态;沉积物:马来眼子菜;太湖中图分类号:x17l文献标识码:A文章编号:1000—6923(2014)07—1872—06TheinfluenceofPotamogetonmalaianuscommunityonsedimentaryphosphorusfractionindiferentsitesofLakeTaihu.LIZhen.guo,,WANGGuo.x
4、iang,MAJiu—yuan,,ZHANGJia,OUYuan(1.SchoolofGeographicalScience,NanjingNormalUniversity,Nanjing210023,China;2.DepartmentofGeography,ScienceandTechnologyofHunanUniversity,Xiangtan411201,China).ChinaEnvironmentalScience,2014,34(7):1872-1877Abstract:Tounderstandtheefectof
5、thesubmergedmacrophytePotamogetonmalaianusonthesedimentaryphosphorus(P)fractioninLakeTaihu,China,variousformsofPinPmalaianusvegetatedandnon—vegetatedareaswerequantifiedwiththestandardmeasurementandtest(SMT)approachinsurfacesediments(0~40cm)fromthenortheast(Gonghubay)a
6、ndthesouthlakeregions.ResultsshowedthatinGonghubay,Fe/A1一PinPmalaianusvegetatedareasweresignificantlyhigher<0.05)incomparisonwiththenon-vegetatedareas.Howeverinthesouthlake,Fe/A1-Pinthevegetatedareasweresignificantlylower(P<0.05)incomparisonwiththenon—vegetatedareas.O
7、Pinthevegetatedareasweregreatlydecreasedincomparisonwiththenon-vegetatedareainthesouthlake<0.05).TheeffectofPmalaianusonthesedimentaryCa-PinGonghubayandthesouthlakewaswithinO~15cm.ItisconcludedthatthesubmergedmacrophytemalaianushasancleareffectontheretentionofPnutrien
8、ts.Keywords:phosphorusfraction;sediment;Potamogetonmalaianus;LakeTaihu沉积物在浅水湖泊营养盐循环中扮演了重物,不同结合态的磷具有不同的地球化学行为钔.要角色,当外源污染被切断后,
此文档下载收益归作者所有