CAJ | 학술논문

运用生态经济学原理,对广西主要人工林类型在一个完整轮伐期内的固碳成本现值动态变化及其敏感性进行系统分析和比较,并分析不同贴现率对各人工林类型固碳成本的影响,同时结合木材收益分析主要人工林类型固碳成本与净收益,并且将净收益与不考虑木材收益时的固碳成本进行比较.结果表明:主要人工林固碳成本现值均随林龄的增加而降低;各人工林类型在轮伐期末的固碳成本现值以木荷+枫香、杉木、桉树较大,其中,木荷+枫香每吨碳171.8～283.4元,杉木178.3～271.7元,桉树211.0～225.9元;马尾松、柳杉+水杉、木麻黄+檫树较小,其中,马尾松每吨碳133.3～218.9元,柳杉+水杉133.0～205.7元,木麻黄+檫树122.0～159.1元;栎类+青冈最小,每吨碳仅48.9～100.4元;以杉木为例的各项成本的年际波动明显影响所核算的固碳成本;采用较低贴现率与较高贴现率所计算出的各树种轮伐期末固碳成本现值相差较大,贴现率对木荷+枫香轮伐期末固碳成本影响较大,对桉树影响较小;在评价碳汇造林项目实施的可行性方面,固碳成本-净收益分析是非常必要的.
운용생태경제학원리,대엄서주요인공림류형재일개완정륜벌기내적고탄성본현치동태변화급기민감성진행계통분석화비교,병분석불동첩현솔대각인공림류형고탄성본적영향,동시결합목재수익분석주요인공림류형고탄성본여정수익,병차장정수익여불고필목재수익시적고탄성본진행비교.결과표명:주요인공림고탄성본현치균수림령적증가이강저;각인공림류형재륜벌기말적고탄성본현치이목하+풍향、삼목、안수교대,기중,목하+풍향매둔탄171.8～283.4원,삼목178.3～271.7원,안수211.0～225.9원;마미송、류삼+수삼、목마황+찰수교소,기중,마미송매둔탄133.3～218.9원,류삼+수삼133.0～205.7원,목마황+찰수122.0～159.1원;력류+청강최소,매둔탄부48.9～100.4원;이삼목위례적각항성본적년제파동명현영향소핵산적고탄성본;채용교저첩현솔여교고첩현솔소계산출적각수충륜벌기말고탄성본현치상차교대,첩현솔대목하+풍향륜벌기말고탄성본영향교대,대안수영향교소;재평개탄회조림항목실시적가행성방면,고탄성본-정수익분석시비상필요적.
Dynamic changes and sensitivity of present value for carbon-sequestrated cost were systematically analyzed and compared in a complete rotation from main plantation types in Cuangxi with ecological economic principles. This study also analyzed impact of different discount rates on carbon-sequestrated cost of various plantation types, calculated the carbon cost-net income of main species plantations with timber benefits, and compared the net income with cost of plantation without timber benefits. The results showed that the present values of carbon-sequestrated cost were decreased with increasing ages of main plantations. Schima superba + Liquidambar formosana, Cunninghamia lanceolata and Eucalyptus spp. had higher present value for carbon cost than others at the end of rotation. It cost (￥) 171.8 ～ 283. 4 per ton C for Schima superba + Liquidambar formosana, (￥) 178. 3～271.7 for Cunninghamia lanceolata, (￥)211.0～225. 9 for Eucalyptus spp., (￥)133.3～218.9 for Pinus massoniana, (￥)133.0～205.7 for Cryptomeria fortunei + Metasequoia glyptostoboides, (￥) 122. 0～159. 1 for Casuarina equisetifolia + Sassafras tzumu, and (￥)48. 9～100.4 for Quercus. sp. + Cyclobalanopsis glauca. Annual fluctuations of input costs affected the counted carbon cost in the case of Cunninghamia lanceolata. The calculated present values of cost were obviously different by using a lower discount rate from a higher discount rate at the end of rotation, and the discount rate impacted obviously Schima superba + Liquidambar formosana,however not obviously Eucalyptus spp. at the end of rotation. It was necessary to analyze carbon cost-net income in evaluating the feasibility of carbon project implementation from afforestation.