简介:Urbanforestryisunderstoodtobethemanagementoftreesandforestsinurbanareas.Ityieldsmanyenvironmentalandmaterialbenefits.InSabah,theenvironmentalservicesofurbanforestryaremoreimportantthanmaterialproducts.Thepotentialofpractisingurbanforestryinvariouszonesandunderdifferentlandownershipisevaluated.AsurbanisationhasoccurredrecentlyinSabah,urbanforestryhasonlybeenpractisedtoalimitedextent.Tourismisaneconomicsectorwhichhasgainedprominenceinrecentyearsandhashugegrowthpotential.Withthenumerousenvironmentalservicesprovidedbyurbanforestrytomakeurbanareasmoreinhabitable,theincreasingtourismactivitiesnecessitateintensificationofurbanforestryactivities.Themainurbancentrescontainmanytouristattractions,andarealsothegatewaystomanyotherecotouristdestinationslocatedthroughoutSabah.WithtourismhighonthedevelopmentagendainSabah,urbanforestryneedstobepromotedsothatbothlocalsandvisitorscanenjoythenumeroussocial,environmentalandeconomicbenefits.
简介:NiOOHnanosheet/graphenehydrogels(HNiOOH/GS),withmesoporousNiOOHnanosheetsuniformlydispersedwithinthehighlyin-terconnected3Dgraphenenetwork,areconstruct-edandstudiedforthefirsttimebyamixedsolvo-thermalandhydrothermalreaction.Theeffectofsol-ventcompositiononthemorphology,phase,anddispersibilityofnanocrystalandhydrogelstrengthis
简介:Thevulnerableeco-areaisoneoftheimportantresearchtargetsinthefieldofsustainabledevelopment.Itistherequirementofbuildingawell-offsocietyinanall-roundwaythatweshouldstudymoreonthevulnerableeco-areas,dealwiththerelationshipbetweenenvironmentalprotectionandeconomicdevelopment,speeduptheeconomicdevelopmentintheseareasandincreasethelivingstandardofthelocalpeople.Thispaperputsforwardthecountermeasuresofenvironment---economycoordination,onthebasisoftherecognitionofeco-environmentfeaturesandsocialeconomicconditionsinthevulnerableeco-areasofChina,inviewoftheprogressinsustainabledevelopmentstudiesofthevulnerableones,takingthetransitionalareasoffarmingandpasturinginnortheastChinaasanexampletostudytheregionalenvironmentvulnerability.
简介:Sustainabledevelopmentofrefineryisanimportantproblemthatrefiningindustryfacesinthe21stCentury.Thesituationandchallengesinfrontofrefiningindustryareanalyzedandillustratedbyexamplesinthispaper.Itisalsorecognizedthatlarge-scale,clean,light-orientedandintegratedrefineryisthemodeofdevelopmentinfuture,andalsoanimportantmeasureforthesustainabledevelopmentofpetroleumresource.
简介:Fromthe1980stothemid-1990s,Africa’seconomicdevelopmentstagnated.ItsgeopoliticalimportancediminishedremarkablyaftertheendoftheColdWar.Africawasonceastrategic'abandonedpawn'oftheWest.Forquitealongperiodoftime,'Africapessimism'wasverypopularininternationalsociety.Nevertheless,overthepastdecade,majorchangeshavetakenplaceinAfrica.Itseconomicdevelopmenthaschangedfroma'low-ebb'periodintoagrowthperiod.Itsinternationalstatushaschangedfrom'beingmarginalized'into'beingupgraded.''Africanfever'isontheriseacrosstheglobe.Judgingfromboththedomesticandinternationalsituations,Africahasenteredintoitsmostfavorablestrategicperiodofpeaceanddevelopmentsinceindependence,greatlyincreasingtheworld’sexpectationofAfrica’sfuture.However,restrictedbymanyfactors,bothdomesticandinternational,Africastillhasalongandtoughwaytogotomakeitsrejuvenationdreamcometrue.
简介:Modernforestryfocusingonecologicaldimensionneedssomenewindicatorsdifferentfromthosedesignedforthetraditionalforestry.Onthebasisoftheevaluationindicatorsfortraditionalforestry,suchasforestcoverage,totalstandingstockvolumeandforestvolumeperunitarea,thepapercameupwithanewindicatorcalled"forestthickness"(FT).FTreferstothethicknesswhichcanbegotifusingtotalstockvolumeofforestandtreestocoverthetotallandinagivenarea,anditischargedb...
简介:ThesteelslagatBaosteelmainlycomesfrombasicoxygenfurnaces(BOF),electricarcfurnaces(EAF),continuouscastingandhotmetalpretreatment.TheoutputofthesteelslagatBaosteelwas4.43Mtin2010.Thesteelslagwasutilizedbothwithinthecompanyandacrossthesociety,andtheutilizationratewithinthecompanyachievedwas16%.Thisstudydescribesthecurrentstatusandexistingproblemsinthosetechnologiesoftreatingandusingsteelslag,intheaspectsofprimarytreatment,secondarytreatmentandadvancedtreatment,anditpointsoutthedevelopment'sdirection.
简介:Thereproducingalumina-magnesia-carbonbrickswerepreparedwiththedumpedbricksasstartingmaterials.Thebulkdensity,apparentporosity,crushingstrength,modolusofruptureandslagresistanceofthespecimenwereanalyzed.Theresultsshowthattheusedrefractoriescanbereusedandrecycledbytherightmethod.Thereproducingalumina-magnesia-carbonbrickswithbetterabilitieswereprepared.
简介:Inthisstudy,28,691genomesequencesand16,566expressedsequencetags(ESTs)ofEucalyptuswerederivedfromtheGenBankdatabase.Atotalof2292SSRlociweresoughtoutfrom1785effectivesequences.ThroughanalysesofSSRlociinformation,theSSRmotiflengthwasnegativelycorrelatedwiththeabundanceoftheSSRs.IntheESTsequencesofEucalyptus,tripletrepeatmotifswerethemostabundant,anddinucleotiderepeatsmotifshadthehighestfrequencies.Subsequently,395pairsofprimersweredesignedbasedontheSSRloci.UsingoptimizedSSR-PCRconditions,340pairsofprimersweresuccessfullyscreened,withasuccessrateof86.1%.Byconstructionofamaximumlikelihoodphylogenetictreeofsixeucalyptspecies,representedbyfivespeciesofthegenusEucalyptusandoneofthegenusCorymbia,thegeneticrelationshipsofEucalyptusurophyllaandE.camaldulensissuggestedbythistreewasfoundtodifferfromthatsuggestedbytraditionalmorphologicaltaxonomy.TheresultsprovideinsightsforevaluatinggeneticdiversityofEucalyptusandanalysisofEucalyptusphylogeneticsusingSSRmarkers.
简介:WiththeimplementationofNaturalForestsProtectionProgram,woodresourcebaseinChinaisshiftingfromnaturallygrownforeststoplantationforests.Thispaperreviews:1)TheevolutionofChinesedecade-longreforestationprogramanditscontributiontosustainablewoodsupplyanddevelopment,and2)impactsof"China'sNaturalForestProtectionProgramand"Fast-GrowingandHigh-YieldPlantationPrograminChina"onChina'swoodsupplyandsustainability.Inaddition,thispaperhighlightsChi...
简介:Inthispaper,IwillbrieflyanalyzetheroleofmassmediainthedevelopmentofTibettourism.ThroughsomeexamplesandsometheoreticalanalysiswewillmainlydiscusstheproblemsandtheprospectsofTibettourismmedia.IsincerelyhopethisthesiswillprovidesomegoodsuggestionsandviewstothedevelopingofTibettourism.