不同杉阔混交林生态系统碳储量及其分配特征OA
Characteristics of carbon storage and its allocation in different Cunninghamia lanceolata and broad-leaved mixed forest ecosystems
为探究杉木与不同阔叶树种混交林的林分生产力和生态系统碳储量差异,筛选兼顾生长和固碳增汇的混交模式,以 10 年生杉木×赤皮青冈混交林、杉木×闽楠混交林以及杉木纯林作为研究对象,通过对不同林分类型生态系统各组分生物量和含碳率的测定,比较不同林分类型的生长及其生态系统碳储量的差异.结果表明:不同林分类型生态系统总碳储量表现出显著差异(P<0.05),与杉木纯林相比,杉木×赤皮青冈和杉木×闽楠混交林的总碳储量分别提高了 30.28%和 19.21%.在不同林分类型生态系统中,土壤层碳储量最高,而后依次是乔木层、灌木层、草本层,凋落物层的碳储量最低(除杉木纯林外).不同林分类型乔木层碳储量存在显著差异(P<0.05),与杉木纯林相比,杉木×赤皮青冈和杉木×闽楠混交林的乔木层碳储量分别提高了 21.78%和 10.40%,不同林分类型乔木层各器官碳储量大小排序为干>根>枝>叶>皮.不同林分类型灌木层碳储量存在显著差异(P<0.05),杉木×赤皮青冈和杉木×闽楠混交林灌木层碳储量比杉木纯林分别提高了 77.42%和 35.48%.杉木×赤皮青冈和杉木×闽楠混交林在 0～20 cm和 20～40 cm土层的碳储量显著高于杉木纯林(P<0.05),但两种混交林之间的差异未达显著水平(P>0.05).综上,杉木与赤皮青冈的混交模式在促进林分生长和增强碳汇方面表现优异,是林业生产中值得推广的兼顾生长和固碳增汇的经营模式.
This study compared the stand productivity and ecosystem carbon storage between different Cunninghamia lanceolata and broad-leaved mixed forests,aiming to select a mixed forest model with balanced growth and carbon sink.The biomass and carbon content in each component of 10-year-old C.lanceolata×Cyclobalanopsis gilva mixed forest,C.lanceolata×Phoebe bournei mixed forest,and C.lanceolata pure forest were measured to compare the growth and ecosystem carbon storage of different stand types.The results showed that the total carbon storage varied among different stand types(P<0.05).Compared with that of the C.lanceolata pure forest,the total carbon storage of C.lanceolata×C.gilva and C.lanceolata×P.bournei mixed forests increased by 30.28%and 19.21%,respectively.In the ecosystems with different stand types,the soil layer had the highest carbon storage,followed by the tree layer,shrub layer,and herb layer,and the litter layer had the lowest carbon storage(except the C.lanceolata pure forest).The carbon storage in the tree layer had differences(P<0.05)among different stand types.Compared with that of the C.lanceolata pure forest,the carbon storage in the tree layer of C.lanceolata×C.gilva and C.lanceolata×P.bournei mixed forests enhanced by 21.78%and 10.40%,respectively,and the carbon storage in different organs was in the order of stem>root>branch>leaf>bark.The carbon storage in the shrub layer varied among different stand types(P<0.05).The carbon storage in the shrub layer of C.lanceolata×C.gilva and C.lanceolata×P.bournei mixed forests increased by 77.42%and 35.48%,respectively,compared with that of the C.lanceolata pure forest.The carbon storage in the 0-20 cm and 0-40 cm soil layers of C.lanceolata×C.gilva and C.lanceolata×P.bournei mixed forests was higher than that of the C.lanceolata pure forest(P<0.05),while the difference between the two mixed forests was not significant(P>0.05).To sum up,the C.lanceolata×C.gilva mixed forest model has excellent performance in promoting stand growth and enhancing carbon sink,and it is worth popularizing in forestry production.
KONG Shuaifeng;WU Xiaojian;HUANG Yonglai;LI Ming;WU Pengfei;MA Xiangqing
College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China||Chinese Fir Engineering Research Center of National Forestry and Grassland Administration,Fuzhou,Fujian 350002,ChinaCollege of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China||Chinese Fir Engineering Research Center of National Forestry and Grassland Administration,Fuzhou,Fujian 350002,ChinaJian'ou Forestry Bureau,Jian'ou,Fujian 353100,ChinaCollege of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China||Chinese Fir Engineering Research Center of National Forestry and Grassland Administration,Fuzhou,Fujian 350002,ChinaCollege of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China||Chinese Fir Engineering Research Center of National Forestry and Grassland Administration,Fuzhou,Fujian 350002,ChinaCollege of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China||Chinese Fir Engineering Research Center of National Forestry and Grassland Administration,Fuzhou,Fujian 350002,China
农业科技
杉木赤皮青冈闽楠混交林生物量碳储量分配特征
Cunninghamia lanceolataCyclobalanopsis gilvaPhoebe bourneimixed forestbiomasscarbon storageallocation characteristics
《森林与环境学报》 2026 (1)
1-8,8
南平市林业局项目"南平市林业局林业碳汇巩固提升经营模式和关键技术研究"(KH230401A)"十四五"国家重点研发项目"杉木大径级无节良才培育技术"(2021YFD2201302).
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