简介:从纯carrageenans获得的Oligo-carrageenans(OC)从海洋的红水藻提取了由在烟草植物和桉树类树提高光合作用和基础新陈代谢刺激生长。另外,OC刺激第二等的新陈代谢,增加涉及对病原体的防卫的代谢物的水平。在这个工作,我们在高度的增加以后分析了OCkappa的效果,在涉及碳,氮和硫吸收的基础新陈代谢酶的活动,ribulose1,5biphosphatecarboxylase/oxygenase(rubisco),glutamate脱氢酶(GDH)和O-acetylserinethiol-lyase(OASTL),并且在支持生长的荷尔蒙,植物生长素吲哚醋酸(IAA)和在松(Pinusradiata)的赤霉素GA3,的水平,树在1和5的集中与OC对待kappa?mg?mL在1点与OCkappa对待的松?mg?mL1在高度显示出类似的增加,但是显示一更高比在5点与OCkappa对待的那些在IAA和GA3的全部的叶绿素,rubisco的活动,GDH和OASTL和水平增加了?mg?mL1。因此,OCkappa刺激生长和基础新陈代谢并且在松树上增加支持生长的荷尔蒙的水平,主要在1点?mg?mL1。
简介:FROMWOMEN'SMOUNTAINPRODUCTIONBRIGADESTOWOMEN'STREEFARMS¥ByXieJingxiangYouxicountyissituatedinamountainous,poorlyforestedregio...
简介:WOMEN’SPARTICIPATIONINSOCIALFORESTRYByLuoRonghuaiLuoshuiisavillageinNinglangCountyinYunnanProvince.MostofoftheMosuonationalit...
简介:Inrecentyears,thequantityandqualityofglobalforestresourcesaredecliningcontinually.Contrarily,thebothinChinaareincreasing,whichisdeeplyrelatedtothesustainableforestmanagementandeco-systemmanagementinChina.Withthetrendthatworldcommunityknowsmoreabouttheimportantroleofforest,moreandmorefunctionsofforestarerecognized.TheimpactandfunctionsofChina'sforestrydeservemoreconcern.Basedonsomeexperiencesinthefieldofforestryresearch,theauthors...
简介:Forestshavemultiplebenefitsandfunctions,includingmitigationofclimatechange.Theimpactsofforestsontheglobalcarboncycleincludeforestsascarbonsinks,wood-basedproductsascarbonsinks,bio-energy,andproductionanduseofnon-timberproducts.Inthepastdecades,forestcoverofChinahasincreasedfrom8.6%to18.21%bylarge-scaleafforestationandconversionofcroplandintoforests.Forestbiomasscarbon(C)stockincreasedfrom4.3PgC(1PgC=1015gC)intheearly1980sto5...
简介:Asanemergingindustry,China'swoodfloorindustrydatesbacktotheearly1980s.Despitealatestart,ithasdevelopedrapidlyduringthelast20years.ThepastdecadeshavewitnessedgreatchangesinChina'swoodfloorindustry.Withhighquality,manyproducts"madeinChina"areavailablewidelyabroadnowadays.Currentglobaleconomicshocks,however,affectChina'sdomesticrealestatesector;hencethefallingdomesticsalesofwoodfloor.Thepaperaimstoidentifythecurrentsituationoffloorindustry...
简介:Urbangreening,urbanforestryandurbangreenstructureplanningalllookatacityasaunitandintendtoimprovethestatusofgreenspaceinthecity.Eventhoughtheyarenewterms,theirconceptshaveevolvedoveraratherlongperiod.Thispaperpresentsahistoricalreviewofwesternconceptsforurbangreeningsincethe1850s.Thefirstaimistoestablishanoverviewofhowtheurbangreeningconcepthasdevelopedandwhattherelationshipsarebetweenthehistoricalconceptsandurbangreening,urbanforestryandurbangreenstructureplanningtoday.Thesecondarypurposeistounderstandsomekeyissuesforurbangreeningthroughtheexaminationofhistoricalprecedents.Basedonaliteraturereview,thepaperpresentsseveralhistoricalconceptsforurbangreening-rampartareaplanning,parksystem,greenbelts,greenwedgesandgreenways.Thenewconceptofurbangreenstructureisalsointroduced.Eachconceptisdefined.Thesocialbackgroundandtheinfluenceoncitydevelopmentaredescribed.Thereviewshowsthattheconceptofurbangreeninghasalonghistory,parallelwiththedevelopmentofthecityplanningconcepts.Thescopeofurbangreeninghasbecomelargeroverthepastyears.Thefunctionsofurbangreenspacehavechangedfromsingle-purposetomulti-purpose.Thestudyindicatesthathistoricalconceptsmaystillgiveinspirationintoday'surbangreeningprocess.
简介:Man-madeforest,whichistheforestecosystemofrehabilitationandreconstruction,playsasignificantroleintheprovisionofforestproductsandimprovementtheecologicalenvironment.Inthispaper,weestablishedtheAR(5)modeltopredictChina'sforestareafrom2009to2015.Thisstudyshowstheslowgrowthofthenationalplantationareatrendwithsomefluctuations,buttheoverallgrowthrateisnotlarge.WeproposedthatononehandChinashouldcontinuetoincreasetheplantationarea,ont...
简介:TheforestproductstradefromothercountriestoChinaispredominantlyandtremendouslyincreasingandmanydealers,officialsandscholarsareconvincedthatthistrendwillcontinue.Thispapercovers5topics:(1)AnalysisonChina'sforestresources;(2)AnalysisonthesupplyanddemandfactorsofforestproductsinChina;(3)TheimporttradeofrecentmainforestproductsinChina;(4)ThemarketcharacteristicsofforestproductsinChina;(5)ThedevelopmenttrendsofforestproductsinChina.
简介:ThepaperanalyzedthecurrentstatusofforeigntradeofforestindustryinChinaandthenationalandinternationalmarketchanges.Basedontheanalysis,theorientationandtransformationofforeigntradepolicyforChina'sforestindustrywerediscussed.
简介:GREENMESSENGER──WOMEN’SMOUNTAINPRODUCTIONBRIGADEINYOUXIVILLAGEByprojectteam“WomenandSocialForestry”Womeninmountainousareaswar...
简介:Climatechangeisagreatconcernofvariouscountries,thepublicandsciencecommunity,andforestplaysanimportantroleinmitigatingclimatechange.ThepapermadeacomprehensiveanalysisregardingthepolicyselectionsofChinatopromoteforestryresponsetotheglobalclimatechange,andelaboratedtheconcreteactionsandachievementsinthisregard.Policyselectionsinclude:1)Reinforcetreeplantingandafforestation,increasetheforestedareaandenhancethecapacityofcarbonsequestration...
简介:Leafshapesarenotonlytheusefulindicatorsinplanttaxonomy,butalsotheimportantfactorsaffectingenergyandmaterialexchangeinleaves.Inthispaper,wecollectedandscannedtheleavesofNitrariatangutoruminDengkouofInnerMongoliaAutonomousRegion(themeanannualprecipitation145mm)andMinqinofGansuProvince(themeanannualprecipitation115mm)andN.sphaerocarpainDunhuang,andthenanalyzedleafshapeparameterswithImage-ProPlus6.0imageprocessingsoftwareandleafδ13CvaluesintheisotopelaboratoryoftheChineseAcademyofForestry.Theresultshowedthat:1)asleafareaincreasedwithincreasingwateravailabilitytheincreasesintheleaflengthandwidthwereasynchronously;2)withthesameleafwidth,the1eavesofN.tangutorumandN.sphaerocarpaweresignificantlylongerinhighwateravailableconditions;and3)althoughthereweresignificantlydifferencesinwateravailabilitybetweenDengkouandMinqin,aswellasbetweenthebottomandmiddleofthealluvialfanneartheEastLakeinDunhuang,theleafδ13CvaluesofN.tangutorumorN.sphaerocarpaweresimilarindifferentwaterconditions(P>0.05).Ourresultssuggestedthattheratioofleafperimetertoareawouldbeanimportantfactorwhichlinkedleafshapetoplantwaterphysiology.Duringgrowingprocedureofleafarea,leaflengthincreasewaspriortoitswidthtoalleviatethereductioninratioofperimetertoareaandmaintainwateruseefficiencyoftheplant.
简介:VILLAGEFORESTRYSTATIONSPERFORMANIMPORTANTROLEINCHINA’SSOCIALFORESTRYDEVELOPMENTByZhuTue;WangLiping;ShiWenkaiTheRelationshipBe...
简介:Themarketmechanismforforestecosystemservicehasalreadybecomecommonknowledgeamongcountriesintheinternationalmovementtoaddressglobalclimatechange.Inthispaper,internationalexperiencesofforestecosystemmarketsuchasbetterunderstandingofconcept,publicparticipation,soundtradingrulesandmeasurementstandardsareanalyzed,anditsimplicationforChinaisalsosummarized.Finally,theprospectsofforestecosystemservicemarketinChinaarediscussed.Thepurposeofthispaperi...
简介:火的相互作用骑车,植物硬币的繁殖特征能决定一处风景的植被分发模式。在加拿大的北方的区域,火在小冰川期前骑车(c。1850年代)以后从30-130年和25-234年直到解决时期(c。1930年代)什么时候更长发射周期,响应气候变迁和人的干扰发生了。分析显示火周期与生长期(4月10月)被相关从1961-1990正常的温度和降水离开,由区域变化。假设野火将在过去的世纪,用气候变迁情形CGCM1的一个评价,CGCM2和HadCM2期间对类似于方式的温暖的未来作出回应显示周期将在西方泰加森林盾转移到80-140年的一个范围的火,为北方的盾和东方泰加森林防护的东方的超过700年,和为在2050的北方的平原的300-400年。