黄土高原生态经济区划研究

(,100101)[];;;[],,,,,4,()()()()42[]S157[]A[]1000-0941(2006)12-0011-031,,,,,,,,,,,,,,;,,;,,,,,,,,,,,,,,,,1958,,,,,,,,,,,,,,22.1,,,,50,,,;50,50,,3:2050,,;207080,,,;,;90,,3:;11SWCC200612;3,,;3,,,,,,,,;,,:;;,,,,;,2.2,,,3:(1),,,,,,,,2080,,,,,,,,,,;,,,,,,50,,,,,,,;,,,,,(2),,,,,,,,,,,,,,,,,(3),,,2.3,,,,,34,()()21SWCC200612()()(1)1(mm)()5501.512134505501.51.89103004501.82.2893002.2910,,,3,,,,11000000(),4,42,22()()12345678910()123456789101112()1234567891011()123456789[](1939-),,,,[]2006-08-06()31:SOILANDWATERCONSERVATIONINCHINANo.12(297)2006AbstractsStudyonEco2EconomyZoningoftheLoessPlateauJINGKe(InstituteofGeographicalSciencesandNaturalResources,CAS,Beijing100101,China)(11)TheecologicalenvironmentoftheLoessPlateauexistsobviousregionaldifferences.Howtodeveloptheeco2economyofagriculture,for2estryandanimalhusbandrythatadaptstotheenvironmentinthelightofthecharacteristicsofnaturalecologicalenvironmentoftheregionisthepurposeofeco2economiczoning.Theprinciplesofeco2economiczoningarezonality,non2zonalityandsocioeconomic.Itplanstodivideeco2economiczoneoftheLoessPlateauintotwo2gradesub2zonesofgradeI:eco2economicareaandgradeII:eco2economiczoneaccordingtodifferentconditions.Accordingtothecharacteristicsofsimilarityanddifferenceofregionalecologicalenvironment,itdividestheLoessPlat2eauinto4gradeIeco2economicareas,i.e.semi2humiddeciduousbroadleaftreesofwarmtemperatezone(I);semi2humidandsemi2aridforeststeppeofwarmtemperatezone(II);semi2aridsteppeoftemperatezone(III)and;aridsteppeanddesertsteppeoftemperatezone(IV).EachgradeIareaisalsodividedinto42gradeIIeco2economiczonesaccordingtothedifferenceofgeomorphology.KeyWords:eco2economicarea;eco2economiczone;zoningprinciple;theLoessPlateauCharacteristicsofEcologicalSystemandTargetIdentificationofEcologicalProtectionoftheYellowRiverHUANGJin2hui1,SHIXiao2xin2,ZHANGQiang3,etal.(1.WaterResourcesProtectionBureauoftheYellowRiverBasin,Zhengzhou,Henan450004,China;2.GeneralDesignandPlanningInstituteofWaterResourcesandHydropower,MWR,Beijing100011,China;3.YellowRiverEngineeringConsultingCo.,Ltd.,Zhengzhou,Henan450003,China)(14)ItdividestheYellowRiverbasinintoecologicalzonesaccordingtotheecologicalandenvironmentalstatusofthebasinandexpoundsthecharacteristicsofeachzone.Itdecidestheprotectiveobjectivesfordifferentecologicalreserveareabasedonthestudyofchannelwetlandsandsurveyandanalysisoftop2gradespecies(fishes)oftheYellowRiver:fromthepointofthebasin,themainecologicalprotectiveobjec2tivesoftheupperstreamarevegetationandforestforconservationofwatersupply;soilandwaterconservationisthemaininthemiddlerea2chesforvegetationprotectionandrehabilitationand;thelowerreachestakestypesofwetlandsprotectionandwetlandsareamaintenanceasthemain,protectingbiodiversityandimportantbirdsresources.ThemainimportantprotectedspeciesofwaterecosystemoftheYellowRivershouldbevaluableeconomicfishes,suchassauryandcarpandthemainprotectedecologicalzonesincludethewetlandsinreservoirarea,estuaryandchannelandwaterareaforsightandrecreation.KeyWords:ecosystem;ecologicalzoning;protectivetarget;wetland;waterresources;theYellowRiverCommentaryonSoilWaterErosionDistributionForecastingModelStudyZHANGYu2ying1,2,LIZhan2bin2(1.XianUniversityofTechnology,Xian,Shaanxi710048,China;2.ZhengzhouUniversity,Zhengzhou,Henan450002,China)(28)Alongwiththethoroughstudyonformationprocessofwatererosionofsoilanditssimulation,erosionforecastingmodelhasbeendevel2opedfromempiricalmodelandphysicalprocessmodeltodisaggregationmodel.Thepaperintroducessometypicalwatererosiondisaggrega2tionmodelsinforeigncountries,evaluatesthepresentstatusofstudyonwatererosiondisaggregationmodelconductedinChinaandpointsouttheexistingproblemsinmodelstudy;thenecessaryworkshouldbedevelopedandscientificissuestobesolvedinestablishingsoilerosionforecastingmodelinChina.KeyWords:soilerosion;watererosion;forecastingmodel;disaggregationmodelInfluenceofPAMtoCapabilityofAnti2WindErosionofSoilLIUDong,RENShu2mei,YANGPei2ling(ChinaAgricultureUniversity,Beijing100083,China)(33)ItsimulatesthewinderosionofsoilsamplerstreatedbydifferentPAMwiththeactionsofnon2sand2drivingwindandsand2drivingwindundertheconditionsofdifferentslopesanddifferentwindspeedofsurface.ItlearnsfromthestudythatwhentheamountofapplicationofPAMis0.2g/m2and6g/m2respectively,itcanwithstand18m/snon2sand2drivingwindandsand2drivingwindandnowinderosionhap2pens;whentheamountofapplicationis0.1g/m2,thewinderosionrateofnon2sand2drivingwindcanbereducedby90%98%,whentheamountofapplicationis4g/m2andsurfaceslopesmallerthan10,itcancontrol18m/ssand2drivingwindandnowinderosionhappensand;whentheamountofapplicationis2g/m2,thewinderosionrateofsand2drivingwindcanbereducedby23%99%.KeyWords:PAM;non2sand2drivingwind;sand2drivingwind;winderosionrate