摘要
为了探讨典型旅游区桂林漓江流域入侵植物水葫芦的综合防治与利用。通过不同空间代替时间的取样方法,测定了桂林会仙岩溶湿地不同富营养化程度水域水葫芦茎叶和根中常规营养成分以及茎叶中微量元素的含量。结果表明:TOC、粗脂肪、木质素、纤维素、半纤维素、碳水化合物成分含量、水葫芦株高、根长、根/总干重、干物质含量、Ca、Mg、Na、Mn、Zn、Fe元素含量均表现为轻度富营养化区>中度富营养化区>重度富营养化区;而TN、TP、TK、粗蛋白、粗灰分成分含量、茎叶/总干重、Cu、Cr、Pb、As、Hg元素含量则表现为重度富营养化区>中度富营养化区>轻度富营养化区。水葫芦生长的环境不同,所含的营养成分及微量元素相差很大。水体的富营养化程度越高,入侵植物水葫芦氮、磷、钾元素含量相应也高,水葫芦株高和根系长度与水体中氮、磷浓度密切相关。水葫芦能吸收水中大量的氮、磷和钾化合物,表现了一定的净化功能。
In order to achieve pollution prevention and comprehensive utilization of Eichhornia crassipes Sloms-laub from different levels eutrophic waters in Huixian Karst Wet lands of typical tourist area at Guilin City.The paper adopted the method of spatial sequence instead of time successional sequence,nutrient chemical components in Eichhornia crassipes Sloms-laub were determined.The order of different nutrient chemical components including TOC,EE,lignin,cellulose,hemicellulose,carbohydrate,organs of height,root length,proportions of root in total weight,Ca,Mg,Na,Mn,Zn and Fe in Eichhornia crassipes Sloms-laub was：light eutrophication areaMedium eutrophication areaSevere eutrophication area.On the contrary,there were more nutrient elements of TN,TP,TK,CP,Ash,proportions of stem,leaf in total weight,Cu,Cr,Pb,As,Hg at severe eutrophication area than light eutrophication area.It has different nutrient chemical component at different growing environment.There was obviously correlation between height,root length and concentration of nitrogen and phosphorus in water of Huixian Karst Wet lands.Eichhornia crassipes Sloms-laub could absorb a large amount of nitrogen,phosphorus,potassium compound and have certain purification function.
出处
《中国农学通报》
CSCD
2012年第26期262-266,共5页
Chinese Agricultural Science Bulletin
基金
国家科技支撑计划课题"漓江流域面源污染控制和水土流失治理技术研究和示范"(2012BAC16B02)
中国科学院"西部之光"人才培养计划资助项目"桂西南石漠化地区不同土地利用方式下土壤碳库特征及碳截获作用机理"(科发人教字[2011]180号)
广西科技攻关课题"漓江流域中小城镇污水生态修复技术和原位净化技术研究与开发"(桂科攻0815004-2-7)
"漓江流域生态保护与旅游可持续发展关键技术研究与示范"(桂科攻0816003-1-8)
桂林市科技计划项目"漓江流域典型丘陵区生态重建的关键技术示范研究"(20090111-2)
关键词
水葫芦
营养成分
富营养化
含量测定
Eichhornia crassipes Sloms-laub
nutrient chemical components
eutrophication
determination
