简介:AccordingtothecultivatingpracticeofLarixolgensispulpplantation,IRR(Internalrevenuerate)andNPV(Netpresentvalue)weretakenastwoeconomicindicestostudytheeffectofcultivationmeasurementsoneconomicbenefitofLarixolgensispulpforest.Theresultsshowedthattheeconomicbenefitofthistypeofforestiscloselyrelatedtorotationandsiteclass.Highereconomicbenefitcouldbeobtainedwhentherotationisshorterandsiteclassishigher.Theplantingdensityalsohadanobviousinfluenceoneconomicbenefit.Onthebaseofassuringsurvivalrateandconservingrate,thelessthefeeusedinsoilpreparationandyounggrowthtendingis,thehighertheeconomicbenefitis.Theinfluenceofdeterminedsixcultivationmeas-uresoneconomicbenefitinsequencewastherotation-siteclass-density-managementfeelevel-younggrowthtendingin-tensity-soilpreparationmethods.
简介:Thisstudyprovidesbasisinformationforestimatingthefeasibilityoftheenvironmentalandecologicalforestryconstructionprojectinthearea.ThroughthesurveyinMiyunwatershed,theeconomicalbenefitsofcarbonsequestrationinfivetypicalforesttypeshavebeenstudiedbycalculatingthebiomassfromthetimberaccumulationdataandconvertingtothemoneyvalue.Theresultsshowthat:inthedurationof100years,atadiscountrateof5%,and197RMByuan/tasthepriceofthecarbonsequestration,thepresentvalue(PV)ofthecarbonsequestrationindifferentforestsare:6900-9300yuan/hainChinesepineforest,6100-8200yuan/hainoakforest,4500-6100yuan/hainotherbroadleafforests,2300-3200yuan/hainshrubsand1300-1800yuan/haincypressforest.Theannualmeaneconomicbenefitofcarbonsequestrationis770-1040yuan/ha.Thepineforesthasthehighestcarbonsequestrationbenefit,followedbyoakforest,otherbroadleafforest,shrubs,andcypressforest.Ifthelandissuitableforallforests,pineforestandoakforestshouldbeplantedinordertosequestratemorecarbon.
简介:Theforestecosystemgoodsandservicesandthenaturalcapitalstocksthatproducethemmakegreatcontributiontonationaleconomyandhumanwelfarebothdirectlyandindirectly.ThispaperevaluatestheeconomicvalueofnaturalcapitalstockandtheannualoutputflowofforestecosystemgoodsandservicestakingQingdaoCityanditseightdistrictsascasestudy.Theresultsofthevaluationstudyshowed,thatthestockvalueofforestnaturalcapitalofQingdaowasRMB13.46billionattheendof2007...