关中盆地地下水资源评价与解析

25520079AgriculturalResearchintheAridAreasVol.25No.5Sept.2007:2006-06-13;:2007-03-11:(G1999043606);(40472131):(1978),,,,,段磊1,王文科1,王雁林1,2,杨泽元1(1.,710054;2.,710082):陕西关中盆地是西部经济最活跃的地区,而水资源不足成为经济进一步发展的制约因素以地质和水文地质条件为依据,从影响地下水形成的诸因素出发,对关中地下水资源进行评价和解析结果表明:受自然因素和人类活动的影响,区内天然资源量和可采资源量发生了变化,其中天然资源量和可采资源量分别减少了5.39108m3/a和4.53108m3/a渭河以北地区地下水资源形成中,降水补给和灌溉补给占主导地位,二者占83.9%;渭河以南地区,降水补给和河水渗漏补给是地下水资源形成的主要因素,二者占94.2%在此基础上,提出了水资源合理开发利用的对策和措施,以期实现水资源的永续利用和生态环境良性循环:地下水资源;解析;评价;关中盆地:S273.4:A:1000-7601(2007)05-0172-05,,,,,2080,,,,,,,1,,,,400km,30~80km,1.90104km2,,--(1)[1],;,,,,,,,,,1.;2.;3.;4.;5.;6.;7.;8.1.Weihealluvialplains;2.Thefirstloessplatform;3.Thesecondloessplatform;4.Theslopeplaininpiedmont;5.Mountainregion;6.Marshland;7.Dune;8.River1Fig.1GeomorphologicmapinGuanzhongBasin,,,[2][3],;,8(1),,,0.1~0.3,0.3~0.4,,,,,2080,,,[4]22.1,,;,,,[5],,:Q-Q=HFt(1)Q=Q+Q+Q+Q+Q+Q+Q(2)Q=Q+Q+Q+Q(3)(1)~(3),Q;Q;Q;Q;Q;Q;Q;Q;Q;Q;Q;Q;Q;;H;t;F,(1978~2003),,(1956~2003),,,(1)~(3),1998,1998:38.5108m3/a,32.6108m3/a,5.42108m3/a(1)1,1998,,31.18108m3/a(2),(31.45108m3/a)2.2,,,,;,,,,26.30108m3/a,()6.74108m3/a,33.04108m3/a(2)2.32080,36.57108m3/a,37.57108m3/a,5.39108m3/a,4.53108m3/a80,,,,2.42,,,,,1735:.,1998..,2002.,,(6.74108m3/a),84.34%,,,1Table1GroundwaterbudgetinGuanzhongbasinZoningcomputationRechargearea(km2)Recharge(108m3/a)Drainage(108m3/a)Deviation(108m3/a)1998Amplitudestoragein1998(108m3/a)Fengxiang-Liquanloessplatform4166.64.892.772.121.77Baoji-Xianyanglowterrace785.43.962.741.221.30Baoji-Huxianlowterrace1659.69.016.822.192.11Baoji-Zhouzhiloessplatform475.21.261.070.180.13Sanyuan-Heyangloessplatform3642.62.742.230.510.51Jingyang-Dalilowterrace3999.87.177.38-0.21-0.12Xian-Huayinlowterrace1701.66.215.980.230.03Changan-Tongguanloessplatform2609.43.273.60-0.33-0.29Sum19040.238.5032.605.905.422Table2GroundwaterresourcesquantityinGuanzhongbasinZoningcomputationNaturalresourcesNaturalresources(108m3/a)Modulus104m3/(km2a)RecoverableresourcesRecoverableresources(108m3/a)Modulus104m3/(km2a)(%)PercentageFengxiang-Liquanloessplatform4.7911.523.698.8777.00Baoji-Xianyanglowterrace1.9424.725.6271.60289.66Baoji-Huxianlowterrace7.7346.567.8747.43101.88Baoji-Zhouzhiloessplatform1.2225.790.8217.3867.38Sanyuan-Heyangloessplatform2.697.382.145.8679.50Jingyang-Dalilowterrace6.0015.004.5911.4776.50Xian-Huayinlowterrace3.6921.675.9334.83160.75Changan-Tongguanloessplatform3.1211.962.389.1176.11Sum31.1816.3833.0417.35105.97174253,,,,3Table3ConstituentratioofgroundwaterinstudyareaZoningRecharge(%)RainfallinfluentRiverleakageIrrigationinfluentPondleakageSiderunoffGuanzhongbasin64.820.46.86.11.9SouthofWeiheriver55.638.64.01.80NorthofWeiheriver74.21.89.710.53.83:(1),,98.1%,,,(2)38.6%,,,,,,,,,,300~500m,0.2~0.4,0.8~1.0,15.6108m3/a[6],50%,,,,(3),74.2%;,20.2%,,,,,,[7],,(4),,,4,,,,80,5.39108m3/a4.53108m3/a,,,,,,,:[1],,,.[M].:,2007.[2],,.[J].,2005,25(1):1522.[3],.[M].:,2002.[4],,,.[M].:,2002.[5],,,.[M].:,2005.[6],,,.[J].,2002,(4):510.[7],,,.[J].,2001,16(6):499509.(英文摘要下转第181页)1755:InvestigationofrhizobiumresourcesofleguminousplantsandtheirecologicaldistributioninNingxiaYANGWen-quan,GUOJun-kang,FENGChun-sheng,WEIGe-hong*(CollegeofLifeSciences,NorthwestA&FUniversity,Yangling,Shaanxi712100,China)Abstract:AninvestigationwasmadeonthenoduleandnitrogenfixationresourcesofwildandcultivatedleguminousplantsinNingxiaand748nodulesamplesthatbelongedto24generaand47specieswerecollected.Theresultsshowed:1)OxytropisxinglongshanicaC.W.ChangandAstragalusefoliolatusHand.-Mazz.werethenewly-discoveredonescapableofsettingnodules.2)Themostnoduleswereyelloworbrown,sphericalorclaviform,andgrownonlateralroots.3)Thewaterandfertilityofsoilandthegrowthstagewereimportantfactorsthataffectedthenodulation.4)Accordingtothegrowthcharacter,distributionandutilization,therh-izobiumofleguminousplantsinNingxiaisdistributedinaridity,mountainousgrasslandandplantationarea.Keywords:Ningxia;leguminousplants;rhizobiumresources;ecologicaldistribution(上接第175页)EvaluationandanalysisofgroundwaterresourcesinGuanzhongbasinDUANLei1,WANGWen-ke1,WANGYan-lin1,2,YANGZe-yuan1(1.SchoolofEnvironmentalScienceandEngineering,ChanganUniversity,Xian,Shaanxi710054,China;2.EnvironmentalDepartment,ShaanxiBureauofLandandResources,Xian,Shaanxi710082,China)Abstract:GuanzhongbasinisthemosteconomicallyprosperousregioninWestChina,butthefurthergrowthofitseconomyisconstrainedbecauseoftheshortageofwaterresources.Basedongeologicalandhydro-geologicalconditions,thepaperevaluatesandanalysesgroundwaterresourcesfromthepointoffactorsthataffecttheformationofgroundwater.Theresultsshowthatnaturalresourcesofgroundwater(5.39108m3/a)andavailablewithdrawalofgroundwater(4.53108m3/a)havedecreasedgreatlyundernaturalfactorsandhumanactivities.NorthtotheWeiheRiver,themainfactorsaffecttheformationofgroundwaterareprecipitateinfi-ltrationandirrigationleakagewhichamountfor83.9percentoftotalrecharge.However,southtotheWeiheRiver,94.2percentoftotalrechargecomesfromprecipitatewaterandriverleakagewhicharechieffactorsoftheformationofgroundwater.Onthebasisofresearchmentionedabove,thepaperputsfor