专业英语资料.docx
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专业英语资料
ENGLISHFORLANDRESOURCEMANAGE
目录
Chapter1 TheNatureandPrinciplesofLandEvaluation3
1.2TheAimsofLandEvalution3
1.3LandEvaluationandLandUsePlanning3
1.4Principles3
1.5LevelsofIntensityandApproach3
1.5.1LevesofIntensity3
1.5.2Two-StageandParallelApproachtoLandEvaluation3
1.6TheNatureofTheFramework3
Chapter1TheNatureandPrinciplesofLandEvaluation4
1.1General4
1.2TheAimsofLandEvalution5
1.3LandEvaluationandLandUsePlanning6
1.4Principles7
1.5LevelsofIntensityandApproach9
1.5.1LevesofIntensity9
1.5.2Two-StageandParallelApproachtoLandEvaluation10
1.6TheNatureofTheFramework11
Chapter2BasicConcepts14
2.1General14
2.2Land14
2.3LandUse14
2.3.1MajorKingsofLandUseandLandLandUtilizationTypes15
2.3.2MultipleandCompoundLandUse16
2.4LandCharacteristics,LandQualitivesandDiagnosticCriteria17
2.4.1Examples20
2.4.2TheScarcityValueofLand21
2.5RequirementsandLimitations21
2.6LandImprovements22
2.7LandSuitabilityandLandCapability23
Chapter3LandSuitabilityClassifications25
3.1General25
3.2StructureofTheSuitabilityClassification25
3.2.1LandSuitabilityOrders25
3.2.2landsuitability26
3.2.3LandSuitabilitySubclasses28
3.2.4LandSuitabilityUnits29
3.2.5ConditionalSuitability29
3.2.6Summary30
3.3TheRangeofClassifications30
3.3.1QualitativeandQuanlitativeClassifications31
3.3.2ClassificationsofCurrentandPotentialSuitability31
3.4TheResultsofLandSuitabilityEvaluation32
Chapter4LandEvaluationProcedures36
4.1General36
4.2InitialConsultations37
4.2.1Objectives38
4.2.2 TheContextofTheStudyArea39
4.2.3DataandAssumptionsUnderlyingTheEvaluation40
4.2.4PlanningTheEvaluation42
4.3KingdsofLandUseandTheirRequirementsandLimitations44
4.3.1DescriptionofLandUse44
4.3.2IdentificationofRequirementofTheUseandLimitations45
4.4DescriptionofLandMappingUnitsandLandQualitives45
4.5 ComparisonofLandUsewithLand46
4.5.1MatchingofLandUsewithLand46
4.5.2DiagnosticProcedures48
4.5.3EstimationofBenefitsandInputs49
4.5.4AssenmentofEnvironmentalImpact51
4.6EconomicandSocialAanalysis52
4.7LandSuitabilityClassification54
4.7.1TheFieldCheck54
4.8SynopsisofProcedures54
4.9PresentationofResults55
NewWordsandExpressions57
Chapter1 TheNatureandPrinciplesofLandEvaluation
1.1General
1.2TheAimsofLandEvalution
1.3LandEvaluationandLandUsePlanning
1.4Principles
1.5LevelsofIntensityandApproach
1.5.1LevesofIntensity
1.5.2Two-StageandParallelApproachtoLandEvaluation
1.6TheNatureofTheFramework
Chapter1TheNatureandPrinciplesofLandEvaluation
1.1General
Decisionsonlandusehavealwaysbeenpartoftheevolutionofhumansociety.Inthepast,landusechangesoftencameaboutbygradualevolution,astheresultofmanyseparatedecisionstakenbyindividuals.Inthemorecrowdedandcomplexworldofthepresenttheyarefrequentlybroughtaboutbytheprocessoflanduseplanning.Suchplanningtakesplaceinallpartsoftheworld,includingbothdevelopinganddevelopedcountries.Itmaybeconcernedwithputtingenvironmentalresourcestonewkindsofproductiveuse.Theneedforlanduseplanningisfrequentlybroughtabout,however,bychangingneedsandpressures,involvingcompetingusesforthesameland.
Thefunctionoflanduseplanningistoguidedecisionsonlanduseinsuchawaythattheresourcesoftheenvironmentareputtothemostbeneficialuseforman,whistatthesametimeconservingthoseresourcesforthefuturethisplanningmustbebasedonanunderstandingbothofthenaturalenvironmentandofthekindsoflanduseenvisaged.Therehavebeenmanyexamplesofdamagetonaturalresourcesandofunsuccessfullanduseenterprisesthroughfailuretotakeaccountofthemutualrelationshipsbetweenlandandtheusestowhichitisput.Itisafunctionoflandevaluationtobringaboutsuchunderstandingandtopresentplannerswithcomparisonsofthemostpromisingkindsoflanduse.
Landevaluationisconcernedwiththeassessmentoflandperformancewhenusedforspecifiedpurpose.itinvolvestheexecutionandinterpretationofbasicsurveysofclimate,soilsvegetationandotheraspectsoflandintermsoftherequirementsofalternativeformsoflanduse.Tobeofvalueinplanning,therangeoflandusesconsideredhastobelimitedtothosewhicharerelevantwithinthephysical,economicandsocialcontextoftheareaconsidered,andthecomparisonsmustincorporateeconomicconsiderations.
1.2TheAimsofLandEvalution
Landevaluationmaybeconcernedwithpresentlandperformance.Frequently,howeveritinvolveschangeanditseffects;withchangeintheuseoflandandinsomecaseschangeinthelanditself.Evaluationtakesintoconsiderationtheeconomicsofproposedenterprisesthesocialconsequencesforthepeopleoftheareaandthecountryconcerned,andtheconsequences,beneficialoradverse,fortheenvironment.Thuslandevaluatonshouldanswerthefollowingquestions:
-howisthelandcurrentlymanaged,andwhatwilllhappenifpresentpracticesremainunchanged?
-whatimprovementsinmanagementpractices,withinthepresentuse,arepossible?
-whatotherusesoflandarephysicallypossibleandeconomicallyandsociallyrelevant?
-whichoftheseusesofferpossibilitiesofsustainedproductionorotherbenefits?
-whatadverseeffects,physical,economicorsocial,areassociatedwitheachuse?
-whatrecurrentinputsarenecessarytobringaboutthedesiredproductionandminimizetheadverseeffects?
-whatarethebenefitsofeachformofuse?
Iftheintroductionofanewinvolvessignificantchangeinthelanditself,asforexampleinirrigationschemes,thenthefollowingadditionalquestionsshouldbeanswered:
-whatchangesintheconditionofthelandarefeasibleandnecessary,andhowcantheybebroughtabout?
-whatnon-recurrentinputsarenecessarytoimplementthesechanges?
Theevaluationprocessdoesnotinitselfdeterminethelandusechangesthataretobecarriedout,butprovidesdateonthebasisofwhichsuchdecisionscanbetaken.Tobeeffectiveinthisrole,theoutputfromanevaluationnormallygivesinformationontwoormorepotentialformsofuseforeachareaofland,includingtheconsequences,beneficialandadverse,ofeach.
1.3LandEvaluationandLandUsePlanning
Landvaluationisonlypartoftheprocessesoflanduseplanning,itspreciserolevariesindifferentcircumstances.inthepresentcontextitissufficienttorepresentthelanduseplanningprocessbythefollowinggeneralizedsequenceofactivitiesanddecisions:
i.Recognitionofaneedforchange;
ii.Identificationofaims;
iii.Formulationofproposals,involvingalternativeformsoflanduse,andrecognitionoftheirmainrequirements;
iv.Recognitionanddelineationofthedifferenttypesoflandpresentinthearea;
v.Comparisonandevaluationofeachtypeoflandforthedifferentuses;
vi.Selectionofapreferreduseforeachtypeofland
vii.Projectdesign,orotherdetailedanalysisofaselectedsetofalternativesfor.Distinctpartsofthearea;this,incertaincases,maytaketheformofafeasibilitystudydecisiontoimplement;
ix.Implementation;
x.Monitoringoftheoperation.
Landevaluationplaysamajorpartinstagesiii,ivandvoftheabovesequence,andcontributesinformationtothesubsequentactivities.Thuslandevaluationisprecededbytherecognitionoftheneedforsomechangeintheusetowhichlandisput;Thismaybethedevelopmentofnewproductiveuses,suchasagriculturaldevelopmentschemesonforestryplantations,ortheprovisionofservices,suchasthedesignationofanationalparkorrecreationalarea.Recognitionofthisneedisfollowedbyidentificationoftheaimsoftheproposedchangeandformulationofgeneralandspecificproposals.Theevaluationprocessitselfincludesdescriptionofarangeofpromisingkindsofuse,andtheassessmentandcomparisonofthesewithrespecttoeachtypeoflandidentifiedinthearea.Thisleadstorecommendationsinvolvingoneorasmallnumberofpreferredkindsofuse.Theserecommendationscanthenbeusedinmakingdecisionsonthepreferredkindsoflanduseforeachdistinctpartofthearea.Laterstageswillusuallyinvolvefurtherdetailedanalysisofthepreferreduses,followed,ifthedecisiontogoaheadismade,bytheimplementationofthedevelopmentprojectorotherformofchange,andmonitoringoftheresultingsystems.
1.4Principles(重点)
Certainprinciplesarefundamentaltotheapproachandmethodsemployedinlandevaluation.thesebasicprinciplesareasfollows:
i.Landsuitabilityisassessedandclassifiedwithrespecttospecifiedkindsofuse
Thisprincipleembodiesrecognitionofthefactthatdifferentkindsoflandusehavedifferentrequirements.Asanexample,analluvialfloodplainwithimpededdrainagemightbehighlysuitableforricecultivationbutnotsuitableformanyformsofagricultureorforforestry.
Theconceptoflandsuitabilityisonlymeaningfulintermsofspecifickindsoflanduse,eachwiththeirownrequirements,e.g.soilmoisture,rootingdepthetc.thequalitiesofeachtypeofland,suchasmoisture,availabilityorliabilitytoflooding,arecomparedwiththerequirementsofeachuse.Thusthelanditselfandthelanduseareequallyfundamentaltolandsuitabilityevaluation.
ii.Evaluationrequiresacomparisonofthebenefitsobtainedandtheinputsneededondifferenttypesofland
Landinitself,withoutinputs,rarelyifeverpossessesproductivepotential;eventh