Page 182 - 《水资源与水工程学报》2024年第6期
P. 182
!35 "!6 # & ' ( ) & * + , - Vol.35No.6
2024 $ 12 % JournalofWaterResources&WaterEngineering Dec.,2024
DOI:10.11705/j.issn.1672-643X.2024.06.18
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HIJKL:Q948;TV213.4 MNOPQ:A MRSL:1672643X(2024)06017808
ApplicabilityofSalixpsammophilarevegetationtoMuUsSandy
Landbasedoninsituexperimentalobservations
3,4
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ZHAOMing ,WANGQiangmin ,WANGShuxuan 3,4
(1.SchoolofLandEngineering,Chang’anUniversity,Xi’an710064,China;2.ShaanxiKeyLaboratoryofLandReclamationEngineering,
Xi’an710064,China;3.Xi’anResearchInstituteofChinaCoalTechnology&EngineeringGroupCorp.,Xi’an710077,China;
4.KeyLaboratoryofCoalMineWaterHazardPreventionandControlTechnologyinShaanxiProvince,Xi’an710077,China)
Abstract:Largescalevegetationrestorationmeasureshavesignificantlychangedthesurfacematerialand
watercyclecharacteristicsofhydrologicalecosystemsinaridregions,andtheincreasedwaterconsumption
duetorevegetationposesamajorchallengetothesustainableutilizationofwaterresources.Salixpsam
mophila,asatypicaldominantplantinMuUsSandyLand,wasselectedastherevegetaionmaterial.Insi
tumonitoringexperimentsofsingleplantinbarelandand Salixpsammophilalandwascarriedouttoinvesti
gatethewaterconsumptioncharacteristicsandsoilwaterbalanceofSalixpsammophiladuringthreeconsecu
tivecompletegrowthcyclesfrom2016to2018.TheresultsshowthatSalixpsammophilahaddifferentroot
wateruptakestrategiesatdifferentstandagesinresponsetorainfall,soilwaterandgroundwater.Annual
Salixpsammophilamainlyusedsoilwater,whereasbiennialandtriennialSalixpsammophilamainlylivedon
groundwater ,butduetothestagnationanddeclineofgrowthoftriennialSalixpsammophila,itsconsump
tionofgroundwaterwaslessthanthatofbiennialSalixpsammophila.Atthesametime,Salixpsammophila
wascapableofregulatingpartofthewatersourcetothesurfacesoilwaterreplenishedbyprecipitationinthe
rainyseason.In SalixpsammophilaLand,evapotranspirationwas1.7~2.3timesofrainfall,thereforerain
fallinfiltrationcouldnotoffsetthesoilwaterdeficitcausedbyvegetationconsumption ,whichmightinduce
theriskofgroundwaterdepletion.Ourresultscanprovideadirectreferenceforpolicymakingofsustainable
ecologicalrestorationinaridandsemiaridregions.
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