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简介：ＡｎＡｍｐｌｅａｎｄＶｉｇｏｒｏｕｓＦｏｒｅｓｔｒｙａｎｄＮａｔｕｒｅＰｒｏｔｅｃｔｉｏｎＣｏｍｍｕｎｉｔｙＡｒｅａ￥ＢｙＷｅｎＹｕａｎｇｕａｎｇ；ＬｉａｎｇＨｏｎｇｗｅｎＭａｓｈａｎＣｏｕｎｔｙ，ｓｉｔｕａｔｅｄｉｎｔｈｅＧｕａｎｇｘｉＺｈｕａｎｇ...

简介：<正>Human’sancestorwasoriginallyamemberofthetenthousandthingsofcreation.Inalonghistoryafterenteringintocivilization.humanstillmaintainedharmonyandequilibriumwithnature.However,thehighlydevelopedmoderntechnologyandeconomysenthuman

简介：ThesustainedgrowthofChineseeconomyinthenewcenturyisasilverlininginthecontinuouslydepressedglobaleconomy.Meanwhile,therapiddevelopmentofChineseeconomyisstillconfrontedwithconstraintsfromdeterioratingenvironmentandruralpovertyissues.Ithasbecomeasignificantpolicyoptioninmaintaininghighspeed,efficiencyandsounddevelopmentofChineseeconomytorehabilitateforestresources,improveecologicalconditions,increasefarmers'incomeandgetonasustainableroadfeaturingcoordinateddevelopmentofpopulation,resourcesandenvironment.TheGrainforGreenProgram,asaCDMactivityofChinesestyle,launchedontrialin1999andimplementedin2002acrossthecountry,isthebiggestlandusetransition,watershedmanagementandpovertyalleviationprograminvolvingthelargestpopulationinChinesehistoryandacrosstheglobe.Itcovers25provinces/regions/citiesandgetsover1600counties,15millionhouseholdsand60millionfarmerswereinvolved.HencetheGrainforTreepolicyhasasignificantbearingonecologicalprotectionandfarmers'povertyalleviationinthesoilandwatererosion-proneregion.Areviewandassessmentofthebackground,essentials,effects,problemsandtrendoftheGrainforTreepolicyisofgreatsignificanceforbothChinaandtheotherdevelopingcountriesintheworldintheireffortstocombatthedeterioratingenvironmentandalleviatepoverty.

简介：TosolvetheproblemintheabsenceofpermeabilityalgorithminChina’sforestryindustrystandard"TechnicalSpecificationforOasisShelterBeltConstruction(LY/T1682—2006)",bydefiningandcalculatingtheforeststructuralparameters-porosityβ,stumpagesurfaceporosityS",stumpagevolumeporosityV’,abovegroundsurfaceareadensityC,abovegroundbulkdensityW,therelationsamongthesestructuralparametersandtheirrelationswithwindpermeabilitycoefficientα,shelterbeltwidthDandmeandiameterofbranchdwerecalculated,whichisexpressedas:W=V’/D=dC/4=dS’/4D=-πdlnβ/4D=-0.1πZdlnα/D.Itisproofedthatthemainstructuralparametershavehomogeneityanddifferentstructuralparametersareofinheritanceandconsistencyonthenature,thereisnoexclusivityinthestrictsense,andisconvertibleundercertainconditions,whichisconvenientforevaluatingthewind-resistanceeffectofshelterbelt.AsetofcomputationalformulasforwindeffectevaluationoffarmlandshelterbeltindryandsandyareainnorthernChinaisderived.

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简介：TheexcessiveexploitationandharvestingofforestresourcesduetoChina’seconomicconstructiondemandshavemadeitsforestresourcefallingintostructuralcrisis.Overthelastthreedecades,theareaofChina’snaturalforestsdecreasedby11millionha.Theareaofmaturedforestshasdecreasedfrom12millionhainearly50sto5.6millionhaatp

简介：碳水池在全球气候变化，和森林生态系统的复杂现象以内组成一个重要元素是重要的全球碳水池。生来的福雷斯特保护节目(NFPP)是在在在1998的在这个国家的灾难的泛滥以后被建立的中国的一个生态的节目。NFPP的目标是限制生态的环境的恶化，加强产地的保护和恢复增加生物多样性，并且恢复在森林区域支持持续开发的自然森林。这研究在NFPP的开始以后在东北中国的一个forested区域在碳隐遁看了变化。节目把瓷器自然森林划分成三classescommercial，noneconomicforeststhat的二种类型服从于规定木材收获，造林，和重新造林的变化层次的管理政体。在从1998～2015的18年的时期期间，碳隐遁的全部的数量以0.04的平均的年度率增加了?MT?C。在导致了的NFPP的实现禁止了或限制了记载以后，这个趋势反映森林管理惯例的转变，许可的收获的更紧密的规定为特定的区域铺平。在记录这个趋势，为象在在未来的另外的国家的NFPP那样的林地节目的更多的有效实现的指南也被建议。

简介：NowadaysSongshanNationalNatureReserveattractsarapidlyincreasingnumberoftourists.However,thedevelopmentofatouristeconomyandthefurtherexploitationofthenaturallandscapethreatentheecologyandmanagementofthereserve.Therefore,definingtherelationshipbetweenecologicaltourismandecologicalprotectioncanprovideaframeworkforthemanagementandexploitationofthereserve.Basedontheanalysisofcurrentsituationandquestionsofthereserve,thispaperprobesintothere...

简介：ＡｔｔｅｎｄｉｎｇｔｏｔｈｅＮｅｅｄｓｏｆＬｏｃａｌＰｅｏｐｌｅｉｎＮａｔｕｒｅＲｅｓｅｒｖｅｓ－ＡｎＩｍｐｏｒｔａｎｔＭｅａｓｕｒｅｉｎｔｈｅＥｓｔａｂｌｉｓｈｍｅｎｔａｎｄＰｒｏｔｅｃｔｉｏｎｏｆＮａｔｕｒｅＲｅｓｅｒｖｅｓTXＡｔｔｅｎｄｉｎｇｔ...

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简介：ThevolatilesreleasebehaviorofpoplarpowderhasbeenstudiedbyTD-GC/MSonlinetechniqueatdifferenttemperatures.Theresultsshowthattheproportionofmainharmfulcomponentswashigherthanthatofbeneficialinthevolatilesofpoplarpowderat40℃and90℃,theharmfulcomponentswas1.7timeshigherthanbeneficialcomponents.Theproportionsofmainbeneficialandharmfulcomponentswereequivalentat60℃,whilethemainbeneficialcomponentswas5.42timeshigherthanthatofharmful.Takingpoplarwoodpowderassubstratetopreparewoodpowder-basedcompositesbyhigh-pressureno-gelmoldingcompactionbetweenthetemperatureofligninsofteningpointandwoodmaterialscarbonization(about150-180℃)canpresentasatisfactoryenvironmentalfriendliness.

简介：干旱忍耐层次和抗氧化剂保护机制为阿萨姆的21个传统的米饭变化被评估，印度，与SahbhagiDhan一起(干旱容忍)并且IR64(干旱敏感)作为控制。干旱与聚乙烯乙二醇6000在水耕法的文化被强加(PEG6000)那开始与不同集中被标准化。所有米饭变化在干旱应力下面在生长特征显示出明显的减少(开始在15%点，为7，d在Yoshida为7d由20%PEG6000列在后面中等)。根据标准评估分数(SES)，八个米饭变化看高干旱忍耐哪个为进一步生物化学的分析向前被带。把生理的参数基于不同morpho-，SN03(吹袭亚德里亚海沿岸的季节性东北冷风)，SN04(ProsadBhog)，SN05(可拉树Joha)，SN06(Helash吹袭亚德里亚海沿岸的季节性东北冷风)，SN08(SalihoiBao)，SN12(可拉树Amona)，SN20(Ronga吹袭亚德里亚海沿岸的季节性东北冷风)和SN21(Sok-Bonglong)作为答应干旱容忍的变化被识别。非酶的抗氧化剂活动viz，谷胱甘肽，ascorbate和酶的抗氧化剂活动象superoxidedismutase(草皮)那样，过氧化氢酶(猫)，guaiacolperoxidase(GPX)，ascorbateperoxidase(APX)，在所有选择变化的射击和根的谷胱甘肽reductase(GR)作为与控制相比揭示了保护机制的重要水平。在包括在干旱应力下面的草皮，GPX，猫，GR和APX的全面抗氧化剂酶的活动的改进在水应力下面在改编过程反映他们的角色。

简介：Climatechangehasposedagreatriskandtreatstoglobalenvironment.Toaddresstheproblem,internationalcommunityresortstocarbonemissionreduction,andmanycountrieshaveimplementedafforestationandreforestationprojectunderCleanDevelopmentMechanism.Chinastartedtheresearchandhasdoneagreatloadofworksonforestcarbontradeasearlyastheyearof2002tocontributetothecarbonemissionreduction.ThispaperintroducestheimplementationofforestcarbontradeinHeyuanCity,Guan...