【英文标准名称】:StandardGuideforSelectionofMethodsforEstimatingSoilLossbyErosion
【原文标准名称】:由于腐蚀引起的土壤损耗的评价方法的选择的标准指南
【标准号】:ASTMD6629-2001(2007)
【标准状态】:现行
【国别】:
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.22
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:agriculture;environment;erosion;sedimentyield;soil
【摘要】:Avarietyofmethodsexistforthismeasurement.Eachmethodhasitsspecificapplicability,limitations,andlevelsofcomplexity.Theusersofthisguideshouldusethedescriptionsofthevariousmethodstochoosetheprocedure,whichmostcloselymeetstheirneeds.Mostofthesemethodsarenotintendedtopredictsedimentyield(6).Thesemethodsareusedtoestimatethesoilloss(inmassofsoil/unitarea/unittime)fromrainfallandsnowmeltforsite-specificfactorsduetorillandinterrillerosion.Thesemethodscannotbeusedtoestimatesoillossfromephemeralgullyorchannelerosion.Theestimatesresultingfromthemethodsinthisguidedonotconstituteadesignforcontroloferosion.However,theoutputsofthesemethodsmaybeimportantinputintosuchadesign.1.1Thisguidedescribesmethodsusedforestimatingsoillossesduetorillandinterrillerosion.Allknownmethodsforwatererosionwithasedimentyieldcomponentarelisted.Thisguideprovidescompletereferencecitationsforthevariousmethodscurrentlyusedtoestimatesoillossbyrillandinterrillerosion.Thereferencedmethodscontaintherationaleanddetailedproceduresfordeterminingrillandinterrillsoilloss.Foreachmethodlisted,specificapplicability,limitations,andlevelofcomplexityarebrieflyoutlinedintermsoftherelativespatialscale,landuse,hydrology,erosion,timescale,inputrequirements,andoutput.1.2Thereferencedmethodsweredevelopedforspecificusesandmaynotbeapplicableinallcases.Forexample,someofthevaluesderivedbythesemethodsestimatetheamountofsoilmovementonafieldwithoutre-depositionwhileothersaccountforre-depositionandestimateoff-fieldsedimentyield.Mostofthesemethodsarenotintendedtopredictsedimentyield.1.3Metric(SI)UnitsSomeofthemethodsinthisguidearewritteninthepreferredEnglishunits.Adiscussionoftheconversionofthefinalanswertometricunitsisincludedinparagraph.1.4Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisguidecannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgement.Notallaspectsofthisguidemaybeapplicableinallcircumstances.Thisguideisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisguidebeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Theword"Standard"inthetitleofthisguidehasbeenapprovedthroughtheASTMconsensusprocess.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.
【中国标准分类号】:P04
【国际标准分类号】:13_080_01
【页数】:5P.;A4
【正文语种】: