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陈俊华, 刘威君, 蒋川东, 等. 川中丘陵区人工柏木林生物量模型及碳计量参数[J]. 四川林业科技, 2023, 44(6): 32−39. DOI: 10.12172/202308100001
引用本文: 陈俊华, 刘威君, 蒋川东, 等. 川中丘陵区人工柏木林生物量模型及碳计量参数[J]. 四川林业科技, 2023, 44(6): 32−39. DOI: 10.12172/202308100001
CHEN J H, LIU W J, JIANG C D, et al. Study on biomass model and carbon metrology parameters of artificial cypress forest in hilly areas of central Sichuan[J]. Journal of Sichuan Forestry Science and Technology, 2023, 44(6): 32−39. DOI: 10.12172/202308100001
Citation: CHEN J H, LIU W J, JIANG C D, et al. Study on biomass model and carbon metrology parameters of artificial cypress forest in hilly areas of central Sichuan[J]. Journal of Sichuan Forestry Science and Technology, 2023, 44(6): 32−39. DOI: 10.12172/202308100001

川中丘陵区人工柏木林生物量模型及碳计量参数

Study on Biomass Model and Carbon Metrology Parameters of Artificial Cypress Forest in Hilly Areas of Central Sichuan

  • 摘要: 人工柏木林(Cupressus funebris)是川中丘陵区主要的森林类型。确定其含碳率和生物量模型,对精确估算人工柏木林生态系统中的植被碳储量,进一步研究该生态系统的碳循环及碳汇大小提供基础数据。通过金堂县、盐亭县野外样地样品采集与室内分析测试获得柏木整株及各器官的含碳率、生物量(共计采集样株56株),建立生物量模型。结果表明:(1)柏木各器官生物量按大小排列为干(46.45%)>根(22.87%)>枝(15.80%)>叶(8.56%)>皮(6.33%)。地上部分生物量占总生物量的比为77.13%,地下部分占22.87%。(2)柏木单株总平均含碳系数为0.4903±0.0197。各器官含碳系数按大小排列为枝>干>叶>皮>根。干的含碳系数与根、皮之间差异显著(P<0.05),根的含碳系数仅与皮之间差异不显著(P>0.05),皮的含碳系数仅与根之间差异不显著(P>0.05),枝和叶的含碳系数仅与干之间差异不显著(P>0.05)。(3)不同地方柏木各器官含碳系数略有差别,变化幅度为0.44~0.57,金堂县柏木整株和各器官的含碳系数均明显高于盐亭县的。(4)无论是一元还是二元,柏木各器官以及整株拟合效果最好的均为指数模型和幂函数,R2范围为0.815~0.939。且全株、地上部分、干拟合效果明显优于皮、枝、叶。(5)研究结果可为进一步校正 IPCC 法中碳计量参数,准确估算森林碳储量提供基础数据。

     

    Abstract: Artificial cypress forest (Cupressus funebris) is the main forest type in the hilly areas of central Sichuan. Determine its carbon content and biomass model, and provide basic data for accurately estimating vegetation carbon storage in artificial cypress forest ecosystems, and further studying the carbon cycle and carbon sink size of the ecosystem. In this article, the carbon content and biomass of the entire plant and various organs of cypress were obtained through field sample collection and indoor analysis testing in Jintang County and Yanting County (a total of 56 sample plants were collected), and the biomass model was established. The results showed that: (1) The biomass of each organ of cypress was arranged in the order: stem (46.45%)>root (22.87%)>branch (15.80%)>leaf (8.56%)>bark (6.33%). The aboveground biomass accounted for 77.13% of the total biomass, while the belowground biomass accounted for 22.87%. (2) The total average carbon content coefficient of a single cypress tree was 0.4903 ± 0.0197. The carbon content coefficient of each organ was arranged in the order: branch>stem>leaf>bark>root. The carbon content coefficient of the stem was significantly different from that of the root and bark (P<0.05), while that of the root was not significantly different from that of the bark (P>0.05), that of the bark was only not significantly different from that of the root (P>0.05), and that of the branches and leaves was not significantly different from that of the stem (P>0.05). (3) There were slight differences in the carbon content coefficients of various organs of cypress in different places, ranging from 0.44 to 0.57. The carbon content coefficients of the entire plant and organs of cypress in Jintang County were significantly higher than those in Yanting County. (4) Whether it was univariate or binary, the best fitting effects for various organs and the entire plant of cypress were exponential models and power functions, with R2 ranging from 0.815 to 0.939. And the fitting effect of the whole plant, aboveground parts, and trunk was significantly better than that of the bark, branches, and leaves.(5) This study can provide basic data for further correction of carbon metrology parameters in IPCC method and accurately estimation of forest carbon storage.

     

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