简介:Chinaisacountrywithavastterritoryandalargepopulationbutlimitedforestresources,whichismainlydistributedintheeconomicallylessdevelopedregions.Therefore,itisparticularlyimportanttoaddresstheissuetoestablishforesteco-compensationmechanismtoovercometheproblemsofinequitybetweenthepeopleandpromotethepublicincentiveforforestmanagementandconservation.Thedefinitionofeco-compensationisdeeplydiscussedbasedontheliteraturereviewofnationalandinternationalinitiatives.Accordingtosummaryandanalysisoftheempiricalworkofforestecocompensationatinternationallevel,somesignificantinspirationsaredrawonthispaper.Basedonthem,thispaperfocusesontheforesteco-compensationmechanismofChina.Firstly,integratingwiththeactualsituationofChina,thepaperputsforwardthepolicyframeworkofeco-compensation.Theinstitutionalframeworkofeco-compensationshouldbeestablishedamongthemulti-departmentswithdifferenttemporalandspatialscales.Secondly,thetypesandrangesofforesteco-compensationarefurtherstudied,thatisthreelevelsofforesteco-compensationsuchasmicro-level,macro-levelaswellasmedia-level,andthenthestandardsofeco-com-pensationareprimarilyestimated,whichincludethethreefactors,namelydirectexpenseofplantation,opportunitycostforforestsprotectionandbenefitsofforestecosystemservices.Finally,therecommendationiscreatedintermsofaboveresearchconclusions,whichisprovidethevitalimportantreferencesforgovernmentpolicymakingintheforesteco-compensationdomain.
简介:Thedevelopmentofstate-ownedforestareaplaysaveryimportantroleinthedevelopmentofChineseforestindustry,andevenintheconstructionofnationaleconomy.AsthebackboneofChineseforestrydevelopment,itcontributestoChineseeconomicdevelopment,ecologicalenvironmentprotectionandsocialprogress.Howtobalanceallstakeholders’interestandbehaviorsremainsasoneofthefocusesinthestudyofsustainabledevelopmentofforestareas.Onthisbasis,researcheswerecarriedoutanddescribedinthepaper.Firstly,thepapergoesthroughtheconceptandscopeofstate-ownedforestareainChina;Secondly,itdefinesthestakeholdersofstate-ownedforestarea,anddiscussesovertheproblemsinstakeholders’behaviorsfromtheaspectofresponsibility,rightsandinterests;andFinally,itdesignsthestakeholders’behaviorsonthebasisofexistingproblemsandprovidesconstructivesuggestionsondeeperreformofstate-ownedforestareas.
简介:TheMicangshanForestParkislocatedinthenortheastedgeoftheSichuanBasin.Thewildanimalsandplantsresourcesarerichandtheecosystemisintegrity.Therearewell-preservedareasofnativebiologicalcommunities.Itsstripandtheregiondecidedthatontheonehandbiologicaldiversityisrich;ontheotherhand,thereisitsuniqueecologicalfragility.Onceitisdestroyed,itwouldbeverydifficulttorestore.Inordertoprotecttheecologicalenvironmentofwildanimalandplanthabitatsandwildanimalandplantresources,thispaperusesquadratsurveyproceduretocarryontheinvestigation.IntheMicangshanForestPark'stypicallandsectortheauthorestablishesthesampleareaof20m×20mtoinvestthetreelayerofplantspeciesandbuildsfive2m×2mthesmallquadratsalongthetypeplace'sdiagonallinemachinerytoinvestbushlevelandthefieldlayerfloristiccomponent.AgainaccordingtotheMicangshanForestPark'sterrain,thevegetationandthedifferencehumanityinterferencecondition,theautorbuildsthedifferentquantitiesseparatelythelinetransecttoinvesttheanimaltype.ThisarticlethroughtoeasternSichuanProvincenorththeMicangshanforestparkbiodiversityresourcesinvestigation,hasanalyzedthebiodiversityprotectionworkpresentsituationandtheexistencequestion,andputforwardtheproposaltothenextprotectionwork.
简介:Atpresentabout60%ofecosystemhasbeendamagedanddegradedseverely,resultinginenormousecologicallossglobally.Theessentialcauseistheirrationalutilizationofecosystembyhumankind,soitisthekeytochangingimproperenvironmentalperformanceofhumankindsoastopreventecosystemfrombeingdamaged.Thequantitativevaluationonthelossofecologicaldamageisaneffectivetooltoguidehumanecoenvironmentalperformance.Inthispaper,theconceptsrelatedtothevaluationonecologicaldamagecostareintroduced;uncertaintiesthatmightariseinthevaluationonthelossofecologicaldamagesuchasareacoverageofvaluation,ecologicaldamagequantity,bordersofecologicaldamagecostanddatasupportareanalyzed;andthevaluationapproachesforthelossofecologicaldamagearealsodiscussed.Asacasestudy,theeconomiclossesofecologicaldamageofforestin2005inChinaarevaluated.
简介:Thepaperassessestheeconomicimpactsofthenaturalforestprotectionprogram(NFPP)ontheeconomyofYunnanProvince,China,intermsofgrossoutput,valueadded,employment,andhouseholdincome.Aninput-outputmodelisdevelopedtoestimateNFPP'seconomicimpactsbymeansofbackwardlinkagesintheforestrysectorandloggingandhaulagesector.ItisfoundthattheNFPPhaspositiveimpactsongrossoutput,valueaddedandhouseholdincomeintheinitialyear,buthassignificantlynegativeimpactsontheregionaleconomyinthefollowingyearsastheinvestmentdecreases.
简介:Thefarmlandtoforestprojecthasasignificantpromotingroleonecologicalcivilization;thefollow-upindustrydevelopmentisthekeytoconsolidatingachievementsofthefarmlandtoforestproject.Usingthesurveydataoffarmlandfarmers,thisarticleanalyzesthestatusanddevelopmentofthefollowupindustryinGuizhouprovince.Theresultsshowthatthefollow-upindustrydevelopmentqualityislow,thefollow-upindustrydevelopmentwillingnessisweak,thefollow-upindustrydevelopmentabilityispoor,andthefollow-upindustrysustaineddevelopmentisinsufficient.Furtheranalysisindicatesthatthefollow-upindustrydevelopmentlackoffunds,technicalandsystemofpolicysupport.Policyimplicationsarediscussedfocusingonimprovingpolicysystem,thefollow-upindustrydevelopmentstrategy,thefollow-upindustrydevelopmentplanning,anddevelopmentwiththecombinationofdevelopmentstrategyofGuizhouprovince.
简介:Tobuildtheartificialforestecosystemisthemajoreco-economicdevelopmentmodelinthewatershedofMiyunReservoir.Itisveryimportanttoevaluatethebenefitsofthoseecosystems.Emergytheoriesareveryhelpfulforustoestablishascience-basedassessmentframework.EmergyevaluationoftheartificialforestecosystemsinthewatershedofMiyunReservoirisusedtoassestherelativevaluesofseveralecologicalfunctions(sometimescalledecosystemservices)andmainecosystemstorages(sometimescallednaturalcapital).Themaindrivingenergies,internalprocessesandstoragesareevaluated.Themainfunctions,includingtranspiration,GPPandinfiltration,areevaluated,whichare609em$/ha/yr,6,245em$/ha/yrand340em$/ha/yrrespectively.Thetotalvaluesofmajorenvironmentalservicesare4,683em$/ha/yrintheartificialforestecosystem.Themainstoragesofnaturalcapitalincludinglivebiomass,soilmoisture,organicmatter,undergroundwaterandlandformareestimated,whichare112,028em$/ha,9em$/ha,40,718em$/ha,34em$/haand6,400,514em$/harespectively.Thelargestvalueislandform,whichaccountsfor97.7%ofthesecalculatedtotalemdollarvalues.Theconceptofreplacementvalueisexploredusingtheemergyvaluesofbothecosystemservicesandnaturalcapital.Thetotalcalculatedreplacementvaluesare302,160em$/ha.
简介:Non-timberforestproducts(NTFPs)canplayakeyroleinsustainableruraldevelopmentduetotheirabilitytosupportrurallivelihoodswhilecontributingtoenvironmentalobjectives,includingbiodiversityconservation.However,systematicunderstandingoftheirroleandpotentialinconservationanddevelopmentremainsweak.Studieshavepointedtoimportantknowledgegapsthatmayleadtoseriousexploitationandunsustainableuseofthenaturalresource'NTFP'inChina,suchas(1)lackofbasicknowledgeongermplasmandnon-existingorincom-pleteinventory,(2)noin-depthandlong-termmonitoringandinstitutionalarrangementstoascertainsustainableextractionlevels,(3)insufficientmarkettransparencyforcommunities,(4)incompleteknowledgeofNTFPdomesti-cationanditseffectsonproductqualityandpriceandtheconservationofwildsources,and(5)noexistingresearchonthefulllengthofthecommoditychainformajornon-timberforestproductsandthevariousactorsinthechain.ThispaperpresentsinitiativestowardbalancingpovertyreductionandbiodiversityconservationgoalsinChina'sremotemountainregionsthroughthesustainablemanagementofNTFPs.Thepotentialandchallengesoforganic,ecologicalandFairtradecertificationschemesinthecontextofsmallholderfarmersarediscussedinmoredetail.
简介:一、引言现金是一种流动性最强的资产,又是一种盈利性最差的资产.现金不足,影响生产经营,现金过多,会使企业盈利水平下降.企业应保持多少现金才合适呢?这便是最佳现金持有量的确定问题.存货模型是确定最佳现金持有量的常用方法,但存货模型是基于以下假设:①分析期内的现金支付持续、规则且确定;②分析期内所有的现金收入都可准确预测;③分析期内的有价证券投资收益率不变;④现金与证券组合之间的转换在任何时候都可以进行,而且转换费用固定.很明显,这些严格的假设条件在企业实际经营活动中是不可能完全实现的.例如付款金额与时间往往很不确定,或者现金回收很不确定.因此,现金的需求量往往是随机波动的,故存货模型的实用性不大.本文在存货模型的基础上,提出具有一定实用价值的确定最佳现金持有量的一个随机模型.
简介:摘要:随机规划理论是将含有随机变量的优化问题建模,通过随机性数据处理使事件机会在随机环境下达到最优的实用理论,社会经济的持续发展为随机规划理论的最优投资组合选择领域应用提供了发展空间。基于此,本文对随机规划视域下的多期投资组合理论基础进行分析,并深入研究多期投资组合的随机规划策略,为投资者提供数据模型参考。
简介:摘 要:随着经济的发展和金融市场的不断扩大,住房抵押贷款保险作为一种重要的金融产品,在保障借款人利益、降低银行风险等方面发挥着重要作用。然而,随机利率模型对住房抵押贷款保险的定价产生了深远影响。传统的定价方法主要基于历史数据和经验判断,而在随机利率模型下,定价策略将更加注重对未来利率变动的预测和分析。这将使得保险公司在制定价格时更加充分地考虑市场风险和借款人的还款能力,为借款人和保险公司带来更为公平和有效的保障。为此本文将随机利率模型概述与应用情况出发,阐述了住房抵押贷款保险定价原理,接着分析了随机利率模型下住房抵押贷款保险的定价方法,并根据举例分析。