Dissolved organic matter in relation to nutrients (N and P) and heavy metals in surface runoff water as affected by temporal variation and land uses - A case study from Indian River Area, south Florid

	Dissolved organic matter in relation to nutrients (N and P) and heavy metals in surface runoff water as affected by temporal variation and land uses - A case study from Indian River Area, south Florid
	Yuangen; Yang; Zhenli; He; Yanbo; Wang; Jinghua Fan; Zhanbei Liang; PeterJ.Stoffella
	2013
Source Publication	Agricultural Water Management
Volume	118 Pages:38-49
Abstract	Transportofdissolvedorganicmatterinrunoffwaterplaysacriticalroleintheincreasedinputsofnutrients(NandP)andmetals(Fe,CuandZn)inwater,andthedepositionofmucksedimentsintheSaintLucieEstuaryandIndianRiverLagoon,Florida.Theobjectivesofthisstudyweretoinvestigatethevariationofdissolvedorganiccarbon(DOC)anddissolvednitrogen(DN)insurfacerunoffwaterwithvaryinglanduses,andtoexploretheirpossiblerelationswiththeleachinglossesofnutrientsNandP,andmetalsFe,Cu,andZnfromdifferentlanduses.Forthis,surfacerunoffwaterfromtwomajoragriculturalproductionsystems(citrusgroveandvegetablefarm)insouthFloridawascollectedweeklyusingpre-installedautosamplersduringJan.2008–Mar.2010.Meanwhile,runoffwaterfromtwelvefieldsiteswithvaryinglanduses(suchasranch,golfcourse,andforest)wascollectedmonthlyusingagrabsamplerfromAug.2008toApril,2010,andsoilswerecollectedatthedepthof0–15cmand15–30cmtwiceayearfromautosampler-installedlocationsandonNov.25th,2008fromgrabsamplinglocationsaswell.Inthefield,watersamplesweremeasuredforelectricalconductivity,dissolvedoxygen,andtemperature;inthelaboratory,watersampleswereanalyzedforpH,totalsolids,turbidity,DOC,DN,totalP(TP),andmetalsCu,FeandZnwithorwithoutpassinga0.45mfiltermembrane.Afterpassinga2mmsieve,freshsoilsampleswereanalyzedformoisture,pH,electricalconductivity,0.5MK2SO4solutionextractableDOC/DN,andMehlich3extractableP,Fe,Cu,andZn.SpatialandtemporalvariationsintheconcentrationsofDOCandDNinrunoffwaterwereobserved,withthegreatestaverageconcentrationsofDOCandDNfromranch(∼28and∼2.3mgL−1)andthelowestfromgolfcourse(∼16mgL−1)forDOCandfromforestandnurseryforDN(∼1.5–1.6mgL−1),respectively.TemporalfluctuationsofDOCandDNinrunoffwaterfromvaryinglanduseswereingoodaccordwithrainfallintensityandfrequencyofrainfall.TemporalvariationsofTPandmetalsFe,Cu,andZnwereinfluencedbyclimaticconditionaswell.CitrusgroveexportedgreateramountsofDOCandDNinrunoffwater(27.6and3.51mgL−1ofmedianvalue)thanvegetablefarms(13.8and2.26mgL−1ofmedianvalue).AnnualcumulativeloadsofDOCandtotalNin2008,2009or2010were>20kgha−1,greaterthanthoseofTP(<13.5kgha−1)andmetalsFe,Cu,andZn(<1.5kgha−1).RanchsoilhadthehighestextractableDOCconcentration(>100mgkg−1),accountingfor1%ofitstotalorganiccarbon.SoilextractableDNhadsignificantcorrelationswithextractablePandCu/Zninsoils.Inconclusion,soiltotalorganiccarbonpoolanditsavailabilityhadanimportanteffectonDOCandDNinrunoffwater.LandusetypeandrainfalleventwerethetwoinfluentialfactorsaffectingconcentrationsofDOCandDN,andtheexportofnutrientsNandP,andmetalsinrunoffwater.
Keyword	Agricultural Fields golf Course ranch dissolve Dorganic Carbon water Flow watershed
Indexed By	SCI
Language	英语
Document Type	期刊论文
Identifier	http://ir.gyig.ac.cn/handle/42920512-1/11111
Collection	环境地球化学国家重点实验室
Affiliation	1.University of Florida,IFAS,Indian River Research and Education Center,2199 South Rock Road,Fort Pierce,FL34945,USA 2.Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China
Recommended Citation GB/T 7714	Yuangen；Yang；Zhenli；He；Yanbo；Wang；Jinghua Fan；Zhanbei Liang；PeterJ.Stoffella. Dissolved organic matter in relation to nutrients (N and P) and heavy metals in surface runoff water as affected by temporal variation and land uses - A case study from Indian River Area, south Florid[J]. Agricultural Water Management,2013,118:38-49.
APA	Yuangen；Yang；Zhenli；He；Yanbo；Wang；Jinghua Fan；Zhanbei Liang；PeterJ.Stoffella.(2013).Dissolved organic matter in relation to nutrients (N and P) and heavy metals in surface runoff water as affected by temporal variation and land uses - A case study from Indian River Area, south Florid.Agricultural Water Management,118,38-49.
MLA	Yuangen；Yang；Zhenli；He；Yanbo；Wang；Jinghua Fan；Zhanbei Liang；PeterJ.Stoffella."Dissolved organic matter in relation to nutrients (N and P) and heavy metals in surface runoff water as affected by temporal variation and land uses - A case study from Indian River Area, south Florid".Agricultural Water Management 118(2013):38-49.

Files in This Item:
File Name/Size	DocType	Version	Access	License
Dissolved organic ma（689KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Application Full Text

File name:	Dissolved organic matter in relation to nutrients (N and P) and heavy metals in surface runoff water as affected by temporal variation and land uses - A case study from Indian River Area, south Florid.pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

环境地球化学国家重点实验室知识库