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1.
IntroductionTheuseofchemicals,includingpesticides,hasbecomeanintegralandeconomicallyessentialpartofmodernagriculture.Pesticide?..  相似文献   

2.
IntroductionContaminationofediblevegetationbypersistent,ubiquitouschemicalssuchasPCBs,dioxins,pesticides,andherbicidesprovidesamajorexposureroutetohumans ,domesticanimalsandwildlife .Uptakeoftheseorganicchemicalsbyplant,andsubsequentdistributionintheplan…  相似文献   

3.
IntroductionAgrochemicalshavebeenactedaveryimportantroleinagriculturalproduction .Foravoidingdamageofcrops,manykindsofpesticidesareappliedforthereasonofinsect,diseasesandweedcontrolinChina .Scientistshavedonealotofworkonthefateandmetabolismofpesticides,…  相似文献   

4.
IntroductionInrecentyears,moreandmoreevidencesshowthatgreenhousegasesemissionshavebeguntoinfluenceglobalclimate.Greenhouseeffectisoneofthemostrigorouschallengesnowadaysweface.Sincebothcauseandimpactofclimatechangeareglobal,thewholeworldshouldtakeacti…  相似文献   

5.
IntroductionEutrophicationofwaterbodieshasbeenattendedmanyyearsbyscientistsandthepublic .Phosphorusinthewaterbodiesoriginatesfromtheatmosphere,agricultureanddomesticandindustrialwastewater;domesticandindustrialwastewaterbeingthelargestsource .Therefore ,…  相似文献   

6.
IntroductionGeostatisticshasprovenusefulforcharacterizingandmappingthespatialvariationofsoilproperties (Webster,1985;Trangmar,1985;Goovaerts ,1999) .Mostpreviousgeostatisticalstudiesfocusedonthedataofarelativelysmallspatialscale(Chien ,1997) .Theapplicationofgeostat…  相似文献   

7.
SoilwatercharacteristicsinmountainpoplarstandanditsbenefitstosoilandwaterconservationinloesshillyregionWuQinxiao;LiuXiangdong...  相似文献   

8.
IntroductionBothmethomylandthiodicarbareNmethylcarbmatepesticides.Methomyliseffectiveonawiderangeofinsectsasanovicide,larvicid...  相似文献   

9.
CharacteristicsforthehybridcelFoazobtainedfromtheprotoplastfusionbetwenyeastandphotosyntheticbacteriainsoybeanprocesingwastew...  相似文献   

10.
GeochemicalcharacteristicsofrareearthelementsinWuhansectionoftheYangtzeRiverWangLijun;ZhangShen;ZhangChaosheng(InstituteofGeo...  相似文献   

11.
CharacteristicsofphosphoruschemistryanditsgeographicaldistributionintheHaiheRivervalley,NorthChinaJiangGaoming;HuangYinxiao;L...  相似文献   

12.
1IntroductionSincefirstpaperpublishedin1958,computersimulationtechniqueforroomacousticshasdevelopedalot.Itplaysaveryimportant...  相似文献   

13.
Core concepts of landscape ecology   总被引:2,自引:0,他引:2  
1IntroductionLandscapeecologyisanewlyemergedtransdisiplinarysubject.Thismultidisciplinecharacteristicbringsbenefitstoitsdeve...  相似文献   

14.
1IntroductionMcHargssuitabilityevaluationapproachtoalanduseplanningknownas“ecologicalplanning”haspracticedinsomecountriesofE...  相似文献   

15.
污染防治的会计学AccountingforPollutionPrevention¥AlienL.WhiteAbstract:IfaccountingpracticesmisrepresentthetrueProntallilityofpreventi...  相似文献   

16.
IntroductionTheozoneholehasbecomeaseasonalphenomenoninsouthpolarsincethediscoveryofAntarcticozoneholein1985(Farman,1985).Theozoneho...  相似文献   

17.
Throughthestatisticsandtheanalysisoflandscapemap,changesoflandsuseregimeandlandscapestructureduring20yearswereinvestigatedin...  相似文献   

18.
重新定义财富RedefiningWealth¥HazelHendersonAbstract:Wemeasurewhatwetreasure.Sostatisticsarenevervalue-freebutfocusonwhatsocietiesde...  相似文献   

19.
Fromeconomicprosperitytoecologicalsustainability──AtheoreticalandpracticalconcernofsustainabledevelopmentinChinaWangRusong,Hu...  相似文献   

20.
CharacteristicsofchangeofhumicsubstanceinsoilindegradedgraslandsShengXuebinResearchCenterforEcoEnvironmentalSciences,Chinese...  相似文献   

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