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ID:48231875
大小:40.00 KB
页数:8页
时间:2020-01-18
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1、continent–alargelandmassenvironment–thesurroundingexternalconditionsmarginalland–landwhichisnotveryproductivereserve–landkeptandusedforaspecialpurposestation–asheepfarminAustraliasettlement–placewherepeoplelivewhichincludeshousesandotherbuildingsuninhabited–aplaceorregioninwhichnopeoplelive
2、onshorewind–windwhichblowsfromtheseatothelandevergreen–atermusedtodescribeaplantwhichkeepsmostofitsleavesalltheyear,thatis,itremainsgreenthroughouttheyearinteraction–therelationshipbetweentwoormorethingsusuallyresultinginchangestakingplacebadlands–landthatiserodedintodeepgullieswithlittleso
3、ilremainingandwithlittlevegetationfertility–degreeofrichnessofthesoillateritesoil–areddishsoilformedbyleachinginhumidtropicalclimate;oftennotsuitableforagricultureleaching–theremovalofsolublesaltsfromtheupperlayerofthesoilbywatermovingthoughthesoilbywatermovingthroughthesoilfromthesurfacele
4、veloftechnology–degreeoftechnicaldevelopmentlitter–leaves,twigsandbrancheswhichhavefallenfromplantsandwhichlieonthegroundsoilerosion–theremovalofthesoilbyrainwash,riverandwindsecondarygrowth–growthofmoreinferiorvegetationaftertheoriginalnaturalvegetationisremovedordestroyedsubsistencefarmin
5、g–atypeoffarminginwhichthecropsproducedaremainlyconsumedbythefarmerandhisfamilycommercialfarming–farmingwhichproducecropsorlivestockmainlyforsaletomarketsextensivefarming–farmingonlargefarms,usuallyhighlymechanizedandemployingveryfewfarmworkerswithrelativelylowyieldsperunitland,butwithhighy
6、ieldperworkermonoculture–growingofonedominantcropplantation–alargefarmorestateonwhichcashcropsuchascacao,coffee,rubber,cotton,tea,sugar-caneandbananasisgrownonalargescaledrought–acontinuousperiodofdryweatherxerophyte–aplantwithisabletowithstanddryconditionsartesianwell–aboringinanartesianba
7、sin,throughwhichwaterrisestothesurfacefromtheaquifer(therockstratumcontainingwater)grazing–feedingcattleorsheepongrowinggrassovergrazing–puttingtoomanyanimalsonthelandtograze,resultinginthevegetationcoverbeinggraduallydestroyedriftvalley–anarrowdeepvalle
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