CAJ | 학술논문

以南亚热带中幼龄针阔混交林为研究对象，通过典型样地调查法，对森林生态系统各个层次进行取样调查，采用12个样地实测数据和已有生物量模型相结合的方法计算乔木层生物量，灌木层、草本层和凋落物层采用全部收获法测得其生物量，对土壤层的调查采用剖面法加土钻法，代表性样品碳含量的测定采用重铬酸钾-水合加热法。在此基础上，分析了中幼龄针阔混交林碳储量及其分配格局。结果表明，主要造林树种树根、树杆、树枝和树叶碳含量均值分别为45.07%、46.73%、46.30%和47.72%。植物碳含量表现为乔木>灌木>草本。乔木碳储量占植被总碳储量比例介于63.38%~94.08%之间，灌木碳储量所占比例介于3.55%~12.67%之间，而草本碳储量仅介于为1.28%~23.95%之间，不同林龄段乔木和灌木碳储量均值随林龄的增加呈上升趋势，而草本碳储量呈下降趋势。土壤碳储量介于106.73~136.61 t·hm-2之间，土壤碳储量随林龄的增加呈现出先降低后升高的趋势。针阔混交林总碳储量介于134.79~162.60 t·hm-2之间，分配格局表现为土壤层>植被层>凋落物层。土壤层碳储量所占总碳储量比例范围为78.34%~94.45%，植被层所占比例介于4.84%~20.16%之间，凋落物层仅介于0.71%~1.50%之间，中幼龄针阔混交林碳储量主要以土壤固碳为主。研究结果为树种选择、人工林生态系统固碳潜力以及人工碳汇林的经营管理等研究提供科学参考。
이남아열대중유령침활혼교림위연구대상，통과전형양지조사법，대삼림생태계통각개층차진행취양조사，채용12개양지실측수거화이유생물량모형상결합적방법계산교목층생물량，관목층、초본층화조락물층채용전부수획법측득기생물량，대토양층적조사채용부면법가토찬법，대표성양품탄함량적측정채용중락산갑-수합가열법。재차기출상，분석료중유령침활혼교림탄저량급기분배격국。결과표명，주요조림수충수근、수간、수지화수협탄함량균치분별위45.07%、46.73%、46.30%화47.72%。식물탄함량표현위교목>관목>초본。교목탄저량점식피총탄저량비례개우63.38%~94.08%지간，관목탄저량소점비례개우3.55%~12.67%지간，이초본탄저량부개우위1.28%~23.95%지간，불동림령단교목화관목탄저량균치수림령적증가정상승추세，이초본탄저량정하강추세。토양탄저량개우106.73~136.61 t·hm-2지간，토양탄저량수림령적증가정현출선강저후승고적추세。침활혼교림총탄저량개우134.79~162.60 t·hm-2지간，분배격국표현위토양층>식피층>조락물층。토양층탄저량소점총탄저량비례범위위78.34%~94.45%，식피층소점비례개우4.84%~20.16%지간，조락물층부개우0.71%~1.50%지간，중유령침활혼교림탄저량주요이토양고탄위주。연구결과위수충선택、인공림생태계통고탄잠력이급인공탄회림적경영관리등연구제공과학삼고。
To evaluate the carbon storages and their allocations in young-and-middle aged conifer-broadleaf mixed forests in southern subtropical region of China. 12 plots belonging to different forest ages were selected and plant biomass and soil carbon content were measured. The biomass of tree layer was calculated through analyzing the 12 sampling sites and the existing biomass models by typical plot investigation, while the biomasses of shrub, herb and litter layers were calculated using the full harvest method. The soil layer was investigated using soil profile method in combination with soil drilling method. Carbon content of representative samples was measured using potassium dichromate-external heating method. The average carbon concentration of root, stem, branch and leaf were 45.07%, 46.73%, 46.30% and 47.72%, respectively. The average carbon concentration of plant followed the order: tree> shrub>herb. Carbon storage of tree accounted for 63.38%~94.08% of the plant, carbon storage in shrub accounted for 3.55%~12.67%, while carbon storage in herb accounted for 1.28%~23.95%. The average carbon storage of tree and shrub increased with increasing forest age, on the contrary, average carbon storage of herb decreased with forest age. Carbon storage in soil layer ranged from 106.73 to 136.61 t·hm-2, and that of soil first decreased and then increased with increasing forest age. The total carbon storage of conifer-broadleaf mixed forests with different forest ages ranged from 134.79 to 162.60 t·hm-2, and carbon storage and their allocation were in the order of soil layer>vegetation layer>litter layer. Carbon storage of soil, vegetation and litter layers accounted for 78.34%~94.45%, 4.84%~20.16%, and 0.71%~1.50% of total carbon storage of conifer-broadleaf mixed forests, respectively. Soil layer was the dominant bank in young-and-middle aged conifer-broadleaf mixed forest. The study provided insight into the tree species selection, carbon sequestration potential in planted forests and the management of forest carbon sinks plantations.