共查询到20条相似文献,搜索用时 15 毫秒
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开拓中的绿色化学──用葡萄糖代替苯生产化学品GreenChemistryatWorkProductsCanBeMadefromGlucoseInsteadofBenzene¥JohnFrostAbstract:BenzeneisPrimarilyob... 相似文献
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保护全球共同的财富──大气TheAtmosphere:GlobalCommonstoProtect¥G.O.P.OBASIAbstract:Inthisarticle,theauthordescribestherisksfromclimatecham... 相似文献
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全球环境问题及其对策技术的开发──日本正在研究的11项课题GlobalEnvironmentalIssueandCountermeasures──ElevenTopicsBeingStudiedbyJapan¥KenzoFujisueAbstract... 相似文献
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日本的公害──我们的惨痛教训PollutionInJapan-BitterLessonsforUstoLearn¥(StudyGroupforGlobalEnvironmentandEconomics)Abstract:Thispaperpresen... 相似文献
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非洲沿海的传统渔民还能生存下去吗?WillTraditionalAfricanCoastalFishermenSurvive?¥WazirOkeraAbstract:TheAfricancoastalfishermen'sliferemainedsi... 相似文献
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1IntroductionLandscapeecologyisaninterdisciplinarysubjectcharacterizedwithspace.Itdealswiththeinteractionbetweenspatialstruct... 相似文献
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Chinese life cycle impact assessment factors 总被引:5,自引:0,他引:5
IntroductionLifecycleassessment(LCA)isanenvironmentalmanagementtoolthatisusedtoexamineandevaluatetheenvironmentalimpactsassociatedwiththeexistenceofproducts(Jensen,1998;Weidema,1997;Wenzel,1997).ThefocusofLCAisontheentirelifecycleoftheproduct,i.e.fromtheextracti… 相似文献
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IntroductionMostsoilpollutionsituationsinvolveseveralpollutantsactingsimultaneously .Thepracticalassessmentoftheoveralltoxicityhasthereforeremainedamajorproblem .AmongthenegativeeffectsofexplorationandproductionactivitiesinoilproducingcommunitiesinNige… 相似文献
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森林生态系统吸碳量高于预期量CarbonSequestrationinForestEcosystemsHigherthanExpected¥J.A.VerweijAbstract:Inthecarboncycle,forestsfunctionasa... 相似文献
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Climate controls on dust storm occurrence in Maowusu Desert, Inner Mongolia, north China 总被引:1,自引:0,他引:1
IntroductionDuststorms,whichremovelargequantitiesoftopsoil,playamainroleintheevolutionoflandscapesinaridandsemi aridlands.Occurrenceofduststormdependsonanumberofenvironmentalfactors,includingsedimentavailability ,soilerodibilityandwinderosivity .Inrecent… 相似文献
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IntroductionTopredictspeciesrichnessandhowitisexpectedtochangewithenvironmentalconditionsrequiresanunderstandingofthetravelcost,strategyandtheenvironmentstress.Brownetal.(Brown ,1 994)hypothesizedthatbodysizerepresentsatrade offbetweenmoreefficientenergyha… 相似文献
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Combined effects of two sulfonylurea herbicides on soil microbial biomass and N-mineralization 总被引:1,自引:0,他引:1
IntroductionAgrochemicalshavebeenactedaveryimportantroleinagriculturalproduction .Foravoidingdamageofcrops,manykindsofpesticidesareappliedforthereasonofinsect,diseasesandweedcontrolinChina .Scientistshavedonealotofworkonthefateandmetabolismofpesticides,… 相似文献
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IntroductionEnvironmentalcontaminantsmayhavetoxiceffectsonmanydifferentorganismsandaffectbiologicalprocessesatcellular,population ,communityandecosystemlevelsoforganization .Mostrecenthazardevaluationprogramsrecommendalgaetoxicitytestsforevaluationsofc… 相似文献
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IntroductionThedeclineinoutputofsoilresourcesinrecentyearshasarousedgreaterinterestfromseveralcircles,includingenvironmentalists,policymakers,soilscientists ,andfarmers,suggestingtheneedforcontinuousevaluationofthepotentialenduranceofcurrentagricultural… 相似文献
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1 IntroductionThispaperreportsstudiesofthemercurycontentsaswellastheirdistributionincoalsfrom 12maincoalminesintheNortheastofChinaandtheeastofInnerMongolia .Thecoal burningproductsaredividedintothreeparts:bottomash ,flyashindustcollectorandthepartescaping… 相似文献
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AcidificationandchangeofphysicochemicalpropertiesofMt.Hengsoilsinlast34yearsDaiZhaohua;LiuYunxia;WangXingJun;ZhaoDianwu(Resea... 相似文献
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“可持续性”定义的困难 总被引:2,自引:0,他引:2
“可持续性”定义的困难TheDifficultyinDefiningSustainability¥MichaelA.TomanAbstract:forecologistssustainabilityconnotespresevastionofthes... 相似文献