简介：Thispaperdiscussesproblemsinbio-pulping,putsforwardtheresolutiontotheseproblems,andpointsouttheadvantagesofbio-pulpingandfuturedevelopmentpotential.

简介：TheprojectofSichuanCommunityForestry,fundedbytheFordFoundationandassistedandguidedbyRECOFTC,isaseriesofactivitiesofresearch,practiceandpromotionofthebestmanagementandoperationalmodesimplementedintheareaoftheprojectofYangtzeriverprotectiveforest.Since1992,Sichuancommunityforestryhascarriedoutsomepilo

简介：n2000,theauthorscollectedagreatquantityofrelevantdatabyinvestigatingmorethan50naturereserves.BasedontheanalysisofdevelopmentandmanagementsituationoftheprotectedareasinChina,themainproblemswereputforward,suchas,nounifiedmanagementforincomeandmanagingactivities,lackofspecialguidelineandeffectivesupervision,lackofincomeandinvestment,investingfinancialdifferenceindifferentprovinces.Alltheseproblemscausedthelackoffundsforconstruction,aswellasthedamageofresourcesandenvironment.Furthermoretheconservingactivitieshavetotransmittotheprofitsinmanyprotectedareas.Combinedwiththeseproblems,theprimarysolutionprogrammersalsowereputforward.

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简介：CollectiveforesttenurereformisnowcarriedoutthroughoutChinawiththeaimtoclarifytheproperty,increaseforestfarmers'incomeandmotivatethedevelopmentofforestry.Butthecollectiveforesttenurereforminnaturereservescomestoadilemma.Thecurrentimplementedlawsandregulationsprovidethatforestsandtreesinnaturereservesshallbeunderstrictprotection,whiletheforestfarmershopetoimprovetheirlivelihoodinthereform.Thepaperdiscussedtheproblemsencounteredinthec...

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简介：TheshortfalloftimberresourceinChinaconstantlykeepsabout150millionm3,whichmainlyreliesonimporttofillinthegap.However,Russia,thekeytimbersupplystateofChina,hasencouragedthedevelopmentofitsnationalintensivetimberprocessingandthereforetheRussianFarEastRegionstartedtograduallyrestrictlogexport.Tothisend,thispaperanalyzesthesituationofforestindustryandtimberproductioninRussianFarEastanddiscussesthecurrentstatusandexistingproblemsintimbertradebetweenRussianFarEastandChina.Attheend,thepaperpresentspolicyrecommendationforfuturetimbertradebetweenRussianFarEastandChinaandviewstheirforestrycooperationprospect.

简介：Afieldexperiment,involvinglimeN(calciumcyanamide,CaCN2)fertilizationasacontrolmeasure,wasconductedtostudyenvironmentalproblemsinducedbylong-termheavyNapplicationinJapaneseteafields.Long-termteacultivationcausedserioussoilacidification.Seventy-sevenpercentofthe70teafieldsinvestigatedhadsoilpHvaluesbelow4.0,and9%below3.0,withthelowestvalueof2.7.Moreover,excessNapplicationinteafieldsputathreattoplantgrowth,inducedseriousnitratecontaminationtolocalwater,andcausedhighnitrousoxideloss.ComparedwiththeconventionalhighNapplicationtreatment(1100kgNha-1)withoutlimeN,thelowNapplication(400kgNha-1)withcalciumcyanamideeffectivelystoppedsoilacidificationaswellasachievedthesameorslightlyhigherlevelsinteayieldandintotalNandaminoacidcontentsofteashoots.Theapplicationofcalciumcyanamidecouldbeasuitablefertilizationforthepreventionofenvironmentalproblemsinteacultivation.

简介：Thepaperanalyzedthebasiccharacteristicsoffast-growingandhigh-yieldplantation,classifiedandidentifiedtheecologicalproblemsinitsdevelopment,andfinallyproposedthebasicprinciplesandcorrespondingtechnicalmeasuresforfast-growingandhigh-yieldplantationecosystemmanagementbasedontheseproblems.