重金属污染土壤植物修复研究进展

重金属污染土壤植物修复研究进展一、本文概述Overviewofthisarticle随着工业化和城市化的快速发展，重金属污染问题日益严重，尤其是重金属在土壤中的积累，不仅破坏了土壤生态，还威胁到人类健康和食品安全。因此，重金属污染土壤修复技术的研究与应用成为环境科学领域的热点课题。在众多修复技术中，植物修复因其环境友好、成本低廉、可持续性强等优点而备受关注。本文旨在综述近年来重金属污染土壤植物修复技术的研究进展，包括植物修复的原理、方法、优势及挑战，以期为重金属污染土壤的有效修复提供理论依据和技术支持。Withtherapiddevelopmentofindustrializationandurbanization,theproblemofheavymetalpollutionisbecomingincreasinglyserious,especiallytheaccumulationofheavymetalsinsoil,whichnotonlydamagessoilecology,butalsothreatenshumanhealthandfoodsafety.Therefore,theresearchandapplicationofheavymetalcontaminatedsoilremediationtechnologyhasbecomeahottopicinthefieldofenvironmentalscience.Amongnumerousremediationtechnologies,plantremediationhasattractedmuchattentionduetoitsadvantagessuchasenvironmentalfriendliness,lowcost,andstrongsustainability.Thisarticleaimstoreviewtheresearchprogressofphytoremediationtechnologyforheavymetalcontaminatedsoilinrecentyears,includingtheprinciples,methods,advantages,andchallengesofphytoremediation,inordertoprovidetheoreticalbasisandtechnicalsupportforeffectiveremediationofheavymetalcontaminatedsoil.二、植物修复技术的原理Theprincipleofplantrestorationtechnology植物修复技术是一种基于植物的生长代谢过程，将重金属离子从污染土壤中吸收、转化、固定或提取出来的环境修复方法。其原理主要包括以下几个方面：Plantremediationtechnologyisanenvironmentalremediationmethodbasedonthegrowthandmetabolismprocessofplants,whichabsorbs,transforms,fixesorextractsheavymetalionsfrompollutedsoil.Theprinciplemainlyincludesthefollowingaspects:植物吸收与转运：植物通过根部吸收土壤中的重金属离子，然后将其转运至地上部分。这一过程中，植物根系表面的离子交换、络合反应以及主动转运机制等都起到关键作用。一些特定植物种类，如超富集植物，具有更高的重金属吸收和转运能力。Plantabsorptionandtransport:Plantsabsorbheavymetalionsfromthesoilthroughtheirrootsandthentransportthemtotheabovegroundparts.Duringthisprocess,ionexchange,chelationreactions,andactivetransportmechanismsonthesurfaceofplantrootsplayacrucialrole.Somespecificplantspecies,suchashyperaccumulatingplants,havehigherabilitytoabsorbandtransportheavymetals.植物固定：植物通过根际分泌物改变土壤pH、氧化还原电位等理化性质，影响重金属的形态和生物有效性。同时，植物根系与土壤微生物的相互作用也能促进重金属的沉淀和固定，降低其在环境中的迁移性和生物可利用性。Plantfixation:PlantschangesoilpH,redoxpotential,andotherphysicochemicalpropertiesthroughrhizospheresecretions,affectingtheformandbioavailabilityofheavymetals.Meanwhile,theinteractionbetweenplantrootsandsoilmicroorganismscanalsopromotetheprecipitationandfixationofheavymetals,reducingtheirmigrationandbioavailabilityintheenvironment.植物提取：通过种植收获植物地上部分，将重金属从土壤中移除。这一方法适用于重金属含量较高的污染土壤，但需要连续种植多年才能达到显著的修复效果。Plantextraction:Byplantingandharvestingtheabovegroundpartsofplants,heavymetalsareremovedfromthesoil.Thismethodissuitableforpollutedsoilwithhighheavymetalcontent,butitrequirescontinuouscultivationformanyyearstoachievesignificantremediationeffects.植物挥发：某些重金属元素（如硒、汞等）在植物体内可被转化为挥发性化合物，通过植物叶片挥发到大气中，从而降低土壤中重金属的含量。Plantvolatilization:Certainheavymetalelements(suchasselenium,mercury,etc.)canbeconvertedintovolatilecompoundsintheplantbody,whichcanbevolatilizedintotheatmospherethroughplantleaves,therebyreducingthecontentofheavymetalsinthesoil.植物修复技术以其环境友好、成本低廉、可持续性强等优点，在重金属污染土壤修复领域展现出广阔的应用前景。然而，该技术也面临一些挑战，如超富集植物的筛选与培育、重金属在植物体内的积累和转运机制、以及修复过程中可能产生的二次污染等。因此，未来研究应关注如何提高植物修复效率、减少环境风险，并推动该技术在实际应用中的规模化与标准化。Plantremediationtechnologyhasshownbroadapplicationprospectsinthefieldofheavymetalcontaminatedsoilremediationduetoitsadvantagesofenvironmentalfriendliness,lowcost,andstrongsustainability.However,thistechnologyalsofacessomechallenges,suchasscreeningandcultivationofhighlyenrichedplants,accumulationandtransportmechanismsofheavymetalsinplants,andpotentialsecondarypollutionduringremediationprocesses.Therefore,futureresearchshouldfocusonhowtoimproveplantremediationefficiency,reduceenvironmentalrisks,andpromotethescalingandstandardizationofthistechnologyinpracticalapplications.三、植物修复技术类型Typesofphytoremediationtechnologies植物修复技术，作为一种绿色、环保的修复方法，近年来在重金属污染土壤修复领域受到了广泛关注。该技术主要利用植物对重金属的吸收、转化和固定能力，达到降低或消除土壤中重金属污染的目的。根据植物修复机制的不同，可以将植物修复技术分为以下几种类型。Plantremediationtechnology,asagreenandenvironmentallyfriendlyremediationmethod,hasreceivedwidespreadattentioninthefieldofheavymetalcontaminatedsoilremediationinrecentyears.Thistechnologymainlyutilizestheabsorption,transformation,andfixationabilityofplantstoheavymetals,achievingthegoalofreducingoreliminatingheavymetalpollutioninsoil.Accordingtothedifferentmechanismsofplantremediation,plantremediationtechniquescanbedividedintothefollowingtypes.植物提取：植物提取是最直接的重金属去除方式。通过种植特定的超积累植物，如某些草本植物、灌木或树木，能够吸收并积累大量的重金属元素。随后，通过收割植物地上部分，将重金属从土壤中移除。这一过程关键在于寻找或培育具有强重金属耐受性和积累能力的植物品种。Plantextraction:Plantextractionisthemostdirectwaytoremoveheavymetals.Byplantingspecifichyperaccumulatingplants,suchascertainherbaceousplants,shrubs,ortrees,alargeamountofheavymetalelementscanbeabsorbedandaccumulated.Subsequently,heavymetalswereremovedfromthesoilbyharvestingtheabovegroundpartsoftheplants.Thekeytothisprocessliesinfindingorcultivatingplantvarietieswithstrongheavymetaltoleranceandaccumulationability.植物稳定：植物稳定技术主要利用植物的根系分泌物和根际微生物活动，改变土壤中的重金属形态，使其从生物可利用态转变为生物不可利用态。这样一来，虽然重金属总量并未减少，但其对环境和生物的毒害作用大大降低。这一方法适用于那些不易被植物吸收或移除的重金属，如铬和铅。Plantstability:Plantstabilitytechnologymainlyutilizestherootexudatesandrhizospheremicrobialactivityofplantstochangetheformofheavymetalsinsoil,transformingthemfrombioavailabletobioavailable.Inthisway,althoughthetotalamountofheavymetalshasnotdecreased,theirtoxiceffectsontheenvironmentandorganismsaregreatlyreduced.Thismethodisapplicabletoheavymetalsthatarenoteasilyabsorbedorremovedbyplants,suchaschromiumandlead.植物挥发：植物挥发是通过植物将土壤中的某些重金属转化为挥发性物质并释放到大气中的过程。这通常涉及重金属的甲基化或其他生物化学反应。尽管这种方法可以有效地将重金属从土壤中去除，但释放到大气中的挥发性物质可能对环境造成二次污染，因此其应用受到一定限制。Plantvolatilization:Plantvolatilizationistheprocessbywhichplantsconvertcertainheavymetalsinthesoilintovolatilesubstancesandreleasethemintotheatmosphere.Thisusuallyinvolvesmethylationorotherbiochemicalreactionsofheavymetals.Althoughthismethodcaneffectivelyremoveheavymetalsfromsoil,thevolatilesubstancesreleasedintotheatmospheremaycausesecondarypollutiontotheenvironment,soitsapplicationislimitedtosomeextent.植物过滤：植物过滤主要用于处理受重金属污染的水体，尤其是径流和渗滤液。通过模拟自然湿地系统，利用植物和微生物的联合作用，去除或降低水体中的重金属含量。这一方法对于水体净化和防止重金属进一步污染土壤具有重要意义。Plantfiltration:Plantfiltrationismainlyusedtotreatwaterbodiescontaminatedwithheavymetals,especiallyrunoffandleachate.Bysimulatingnaturalwetlandsystemsandutilizingthecombinedeffectsofplantsandmicroorganisms,heavymetalcontentinwatercanberemovedorreduced.Thismethodisofgreatsignificanceforwaterpurificationandpreventingfurtherheavymetalpollutionofsoil.不同类型的植物修复技术在重金属污染土壤修复中各有其优缺点。实际应用时，需根据土壤污染程度、重金属种类、环境条件等因素综合考虑，选择最合适的植物修复策略。为提高修复效率和环境效益，还应注重植物品种的筛选和优化，以及与其他环境修复技术的集成使用。Differenttypesofplantremediationtechnologieshavetheirownadvantagesanddisadvantagesintheremediationofheavymetalcontaminatedsoil.Inpracticalapplication,itisnecessarytocomprehensivelyconsiderfactorssuchassoilpollutionlevel,heavymetaltypes,andenvironmentalconditionstoselectthemostsuitableplantremediationstrategy.Toimproverestorationefficiencyandenvironmentalbenefits,attentionshouldalsobepaidtothescreeningandoptimizationofplantvarieties,aswellastheintegrationandusewithotherenvironmentalrestorationtechnologies.四、影响植物修复效果的因素Factorsaffectingtheeffectivenessofplantremediation植物修复重金属污染土壤的效果受到多种因素的影响，包括土壤性质、重金属种类和浓度、植物种类以及环境因素等。Theeffectivenessofplantremediationofheavymetalcontaminatedsoilisinfluencedbyvariousfactors,includingsoilproperties,typesandconcentrationsofheavymetals,plantspecies,andenvironmentalfactors.土壤性质是决定植物修复效果的关键因素之一。土壤pH值、有机质含量、土壤类型等都会影响重金属的生物有效性。例如，土壤pH值的变化可以影响重金属的溶解度和植物对其的吸收能力。有机质含量高的土壤通常能够提供更多的络合位点，从而减少重金属的毒性。Soilpropertiesareoneofthekeyfactorsdeterminingtheeffectivenessofplantremediation.ThesoilpHvalue,organicmattercontent,andsoiltypeallaffectthebioavailabilityofheavymetals.Forexample,changesinsoilpHcanaffectthesolubilityofheavymetalsandtheabsorptioncapacityofplants.Soilswithhighorganicmattercontenttypicallyprovidemorecomplexsites,therebyreducingthetoxicityofheavymetals.重金属的种类和浓度也会影响植物修复的效果。不同的重金属在土壤中的迁移转化能力、生物有效性以及毒性等方面存在差异。例如，一些重金属如铜、锌在适量浓度下对植物生长有促进作用，但浓度过高时则会产生毒性。多种重金属共存时还可能发生相互作用，影响植物对它们的吸收和转运。Thetypesandconcentrationsofheavymetalscanalsoaffecttheeffectivenessofplantremediation.Therearedifferencesinthemigrationandtransformationability,bioavailability,andtoxicityofdifferentheavymetalsinsoil.Forexample,someheavymetalssuchascopperandzinchaveapromotingeffectonplantgrowthatappropriateconcentrations,butwhentheconcentrationistoohigh,theycanproducetoxicity.Whenmultipleheavymetalscoexist,interactionsmayalsooccur,affectingtheabsorptionandtransportofthembyplants.植物种类是另一个重要的影响因素。不同植物对重金属的耐受性、吸收和转运能力存在显著差异。一些植物如超富集植物能够在重金属污染土壤中生长良好，并大量吸收和积累重金属。因此，选择适合的植物种类是提高植物修复效果的关键。Plantspeciesareanotherimportantinfluencingfactor.Therearesignificantdifferencesinthetolerance,absorption,andtransportcapacityofheavymetalsamongdifferentplants.Someplants,suchashyperaccumulatingplants,cangrowwellinheavymetalpollutedsoilandabsorbandaccumulatealargeamountofheavymetals.Therefore,selectingsuitableplantspeciesisthekeytoimprovingtheeffectivenessofplantremediation.环境因素如温度、光照、水分等也会影响植物修复的效果。这些环境因素不仅影响植物的生长和发育，还会影响植物对重金属的吸收、转运和积累过程。例如，高温和干旱条件下植物的生长受到一定限制，可能会影响其对重金属的吸收和转运能力。Environmentalfactorssuchastemperature,light,andmoisturecanalsoaffecttheeffectivenessofplantremediation.Theseenvironmentalfactorsnotonlyaffectthegrowthanddevelopmentofplants,butalsoaffecttheabsorption,transportation,andaccumulationofheavymetalsbyplants.Forexample,underhightemperatureanddroughtconditions,thegrowthofplantsisrestrictedtosomeextent,whichmayaffecttheirabilitytoabsorbandtransportheavymetals.影响植物修复重金属污染土壤效果的因素众多，需要综合考虑土壤性质、重金属种类和浓度、植物种类以及环境因素等多个方面的因素。为了提高植物修复的效果，需要深入研究这些因素的作用机制，并筛选出适合当地土壤和重金属污染状况的植物种类。还需要采取适当的农业管理措施，如调节土壤pH值、增加有机质含量等，以改善土壤环境，提高植物修复的效果。Therearemanyfactorsthataffecttheeffectivenessofplantremediationofheavymetalcontaminatedsoil,anditisnecessarytocomprehensivelyconsidermultiplefactorssuchassoilproperties,typesandconcentrationsofheavymetals,plantspecies,andenvironmentalfactors.Inordertoimprovetheeffectivenessofplantremediation,itisnecessarytoconductin-depthresearchonthemechanismsofthesefactorsandscreenoutplantspeciesthataresuitableforlocalsoilandheavymetalpollutionconditions.Appropriateagriculturalmanagementmeasuresneedtobetaken,suchasadjustingsoilpHandincreasingorganicmattercontent,toimprovethesoilenvironmentandenhancetheeffectivenessofplantremediation.五、植物修复技术的研究进展Researchprogressinplantremediationtechnology植物修复技术，作为一种环境友好的重金属污染土壤修复方法，近年来得到了广泛的关注和研究。植物通过吸收、挥发、根际过滤和稳定化等方式，能够有效降低土壤中重金属的含量，从而减轻其对生态环境和人体健康的危害。Plantremediationtechnology,asanenvironmentallyfriendlymethodforremediationofheavymetalcontaminatedsoil,hasreceivedwidespreadattentionandresearchinrecentyears.Plantscaneffectivelyreducethecontentofheavymetalsinsoilthroughabsorption,volatilization,rhizospherefiltration,andstabilization,therebyreducingtheirharmtotheecologicalenvironmentandhumanhealth.在植物修复技术的研究进展方面，首先表现在植物种类的筛选上。研究者们通过大量的实验和观察，筛选出了一些对重金属具有较强耐受和富集能力的植物种类，如超富集植物（Hyperaccumulator）。这些植物能够在重金属污染的土壤中正常生长，并且将重金属元素吸收并储存在体内，从而降低土壤中的重金属含量。Intermsofresearchprogressinplantremediationtechnology,thefirstmanifestationisintheselectionofplantspecies.Researchershavescreenedoutsomeplantspecieswithstrongtoleranceandenrichmentabilitytoheavymetalsthroughextensiveexperimentsandobservations,suchashyperaccumulators.Theseplantscangrownormallyinheavymetalpollutedsoilandabsorbandstoreheavymetalelementsinthebody,therebyreducingtheheavymetalcontentinthesoil.植物修复技术的研究还体现在对植物吸收重金属机理的深入探究上。研究者们通过分子生物学、生理生态学等手段，揭示了植物吸收、转运和储存重金属的分子机制和生理过程，为植物修复技术的优化和应用提供了理论依据。Theresearchonplantremediationtechnologyisalsoreflectedinthein-depthexplorationofthemechanismofplantabsorptionofheavymetals.Researchershaverevealedthemolecularmechanismsandphysiologicalprocessesbywhichplantsabsorb,transport,andstoreheavymetalsthroughmolecularbiology,physiologicalecology,andothermeans,providingatheoreticalbasisfortheoptimizationandapplicationofplantremediationtechnology.为了提高植物修复的效率，研究者们还开展了多种植物修复技术的集成和优化研究。例如，将植物修复技术与微生物修复技术相结合，利用微生物的代谢活动促进植物对重金属的吸收和转化；或者通过基因工程技术改良植物，使其具有更强的重金属耐受和富集能力。这些集成和优化技术的研发，为植物修复技术在实际应用中的推广提供了有力支持。Inordertoimprovetheefficiencyofplantremediation,researchershavealsoconductedintegratedandoptimizedresearchonvariousplantremediationtechnologies.Forexample,combiningplantremediationtechnologywithmicrobialremediationtechnology,utilizingmicrobialmetabolicactivitiestopromoteplantabsorptionandtransformationofheavymetals;Alternatively,geneticengineeringtechniquescanbeusedtoimproveplantstoenhancetheirabilitytotolerateandaccumulateheavymetals.Thedevelopmentoftheseintegratedandoptimizedtechnologiesprovidesstrongsupportforthepromotionofplantremediationtechnologyinpracticalapplications.然而，尽管植物修复技术在重金属污染土壤修复方面取得了显著的进展，但仍存在一些问题和挑战。例如，植物修复过程通常较为缓慢，需要较长的时间才能达到理想的修复效果；不同植物对重金属的耐受和富集能力差异较大，需要根据具体的污染情况和修复目标选择合适的植物种类。因此，未来的研究应进一步关注如何提高植物修复技术的效率和稳定性，以及如何在实际应用中更好地解决这些技术和环境问题。However,althoughplantremediationtechnologyhasmadesignificantprogressintheremediationofheavymetalcontaminatedsoil,therearestillsomeproblemsandchallenges.Forexample,theprocessofplantrestorationisusuallyslowandtakesalongtimetoachievethedesiredrestorationeffect;Therearesignificantdifferencesinthetoleranceandenrichmentabilityofdifferentplantstoheavymetals,anditisnecessarytochooseappropriateplantspeciesbasedonspecificpollutionsituationsandremediationgoals.Therefore,futureresearchshouldfurtherfocusonhowtoimprovetheefficiencyandstabilityofphytoremediationtechniques,aswellashowtobetteraddressthesetechnicalandenvironmentalissuesinpracticalapplications.植物修复技术在重金属污染土壤修复方面具有良好的应用前景和广阔的研究空间。随着科学技术的不断进步和环境保护需求的日益增强，相信植物修复技术将在未来的重金属污染土壤修复中发挥更加重要的作用。Plantremediationtechnologyhasgoodapplicationprospectsandbroadresearchspaceintheremediationofheavymetalcontaminatedsoil.Withthecontinuousprogressofscienceandtechnologyandtheincreasingdemandforenvironmentalprotection,itisbelievedthatplantremediationtechnologywillplayamoreimportantroleintheremediationofheavymetalcontaminatedsoilinthefuture.六、植物修复技术的应用前景与挑战Theapplicationprospectsandchallengesofphytoremediationtechnology植物修复技术作为一种绿色、环保的土壤重金属污染修复手段，在近年来受到了广泛的关注和研究。其利用植物对重金属的吸收、转化和固定能力，不仅可以有效地降低土壤中重金属的含量，还能够在一定程度上改善土壤生态环境，具有广阔的应用前景。Plantremediationtechnology,asagreenandenvironmentallyfriendlymethodforsoilheavymetalpollutionremediation,hasreceivedwidespreadattentionandresearchinrecentyears.Itutilizestheabsorption,transformation,andfixationabilityofplantstoheavymetals,whichcannotonlyeffectivelyreducethecontentofheavymetalsinsoil,butalsoimprovethesoilecologicalenvironmenttoacertainextent,andhasbroadapplicationprospects.生态修复与农业利用：植物修复技术有助于恢复受污染土地的生态功能，提高土地利用率。在重金属污染程度较轻的地区，经过植物修复后的土地可以重新用于农业种植，提高农产品的产量和质量。Ecologicalrestorationandagriculturalutilization:Plantrestorationtechnologyhelpstorestoretheecologicalfunctionofpollutedlandandimprovelandutilizationefficiency.Inareaswithlessheavymetalpollution,landthathasundergonephytoremediationcanbereusedforagriculturalcultivation,improvingtheyieldandqualityofagriculturalproducts.景观设计与生态旅游：结合植物修复技术，可以在重金属污染区域打造具有生态特色的景观，吸引游客，发展生态旅游，促进地区经济发展。Landscapedesignandecotourism:Combiningplantrestorationtechnologycancreateecologicallydistinctivelandscapesinheavymetalpollutedareas,attracttourists,developecotourism,andpromoteregionaleconomicdevelopment.资源化与能源化利用：部分重金属在植物体内具有一定的积累能力，可以通过收获植物体来实现重金属的资源化利用。同时，植物残体还可以作为生物质能源进行利用，实现能源的可持续利用。Resourceandenergyutilization:Someheavymetalshaveacertainaccumulationabilityintheplantbody,andcanbeutilizedasresourcesbyharvestingtheplantbody.Meanwhile,plantresiduescanalsobeutilizedasbiomassenergytoachievesustainableenergyutilization.修复周期长：植物修复技术通常需要较长的时间才能达到显著的修复效果，这对于急需修复的土地来说是一个巨大的挑战。Longrestorationcycle:Plantrestorationtechnologyusuallytakesalongtimetoachievesignificantrestorationeffects,whichisahugechallengeforurgentlyneededlandrestoration.植物种类选择：不同植物对重金属的吸收和转化能力差异较大，如何选择高效、适应性强的植物种类是植物修复技术面临的重要问题。Plantspeciesselection:Differentplantshavesignificantdifferencesintheirabilitytoabsorbandtransformheavymetals.Choosingefficientandadaptableplantspeciesisanimportantissuefacingplantremediationtechnology.重金属在食物链中的积累：部分重金属在植物体内具有一定的积累能力，可能通过食物链进入人体，对人类健康造成潜在威胁。因此，在植物修复过程中需要加强对重金属在食物链中迁移转化规律的研究。Accumulationofheavymetalsinthefoodchain:Someheavymetalshaveacertainaccumulationabilityinplantsandmayenterthehumanbodythroughthefoodchain,posingapotentialthreattohumanhealth.Therefore,itisnecessarytostrengthentheresearchonthemigrationandtransformationofheavymetalsinthefoodchainduringtheprocessofplantremediation.复合污染问题：在实际应用中，土壤往往同时受到多种重金属的复合污染。如何同时去除多种重金属，避免它们之间的相互作用对植物修复效果产生负面影响，是植物修复技术需要解决的关键问题。Compositepollutionproblem:Inpracticalapplications,soilisoftensimultaneouslycontaminatedbymultipleheavymetals.Howtosimultaneouslyremovemultipleheavymetalsandavoidthenegativeimpactoftheirinteractionsontheeffectivenessofplantremediationisakeyissuethatneedstobeaddressedinplantremediationtechnology.植物修复技术在重金属污染土壤修复中具有广阔的应用前景，但同时也面临着诸多挑战。未来需要进一步加强对植物修复技术的研究和创新，提高修复效率和质量，为重金属污染土壤的治理和生态环境的改善做出更大的贡献。Plantremediationtechnologyhasbroadapplicationprospectsintheremediationofheavymetalcontaminatedsoil,butitalsofacesmanychallenges.Inthefuture,itisnecessarytofurtherstrengthenresearchandinnovationinplantremediationtechnology,improveremediationefficiencyandquality,andmakegreatercontributionstothetreatmentofheavymetalcontaminatedsoilandtheimprovementoftheecologicalenvironment.七、结论Conclusion随着工业化和城市化的快速发展，重金属污染已成为全球范围内土壤污染的主要来源之一。重金属污染土壤不仅对生态环境构成严重威胁，而且通过食物链对人类健康产生潜在风险。因此，寻找高效、环保的土壤重金属污染修复技术显得尤为迫切。植物修复作为一种绿色、可持续的修复技术，近年来在重金属污染土壤修复领域取得了显著的研究成果。Withtherapiddevelopmentofindustrializationandurbanization,heavymetalpollutionhasbecomeoneofthemainsourcesofsoilpollutiononaglobalscale.Heavymetalpollutionofsoilnotonlyposesaseriousthreattotheecologicalenvironment,butalsoposespotentialriskstohumanhealththroughthefoodchain.Therefore,itisparticularlyurgenttofindefficientandenvironmentallyfriendlysoilheavymetalpollutionremediationtechnologies.Plantremediation,asagreenandsustainableremediationtechnology,hasachievedsignificantresearchresultsinthefieldofheavymetalcontaminatedsoilrem