四川林业科技2025，Vol.46Issue(5)：1-10,10.DOI:10.12172/202506030003
川中丘陵区人工柏木林不同立地生物量碳计量模型
Biomass and carbon measurement model of artificial cypress forests in different site types in hilly areas of central Sichuan
摘要
Abstract
The Methodology for Greenhouse Gas Voluntary Emission Reduction Project:Afforestation Carbon Sequestration(CCER-14-001-V01)points out that since the IPCC carbon measurement parameters mostly come from Europe and America,they are prone to cause uncertainties in regional carbon measurement.Therefore,local standards are preferentially adopted for standing tree biomass models.In this study,the middle-aged artificial cypress forest in Jintang County,a hilly area in central Sichuan,was selected as the research object.According to the landform,soil layer thickness and slope position,three site types were selected(thick soil layer Ⅰ in the upper slope,thick soil layer Ⅱ in the middle slope,barren soil layer Ⅲ in the lower slope),and 105 sample trees were collected to determine the carbon content and biomass of each organ,and to construct biomass model and related parameters(BCEF,WD,RSR).The results showed that:(1)The carbon content of cypress leaves was the highest and that of roots was the lowest.Among different sites,there was no significant difference in carbon content of branches,leaves and roots(P＞0.05),while there were significant differences in the trunk between Ⅰ and Ⅱ,and in the bark between Ⅱ and Ⅰ as well as Ⅲ(P＜0.05).The average carbon content coefficient of the whole tree was 0.4869,which was slightly higher than 0.4847 in GB/T 43648-2024.The carbon content coefficients of the aboveground part,trunk,bark of type Ⅲ and root of each site were lower than the national standard,while those of branches and leaves were higher than the national standard.(2)In the unary/binary biomass model,the optimal biomass model for each organ of cypress were mostly power functions,and a few were quadratic polynomials or exponential functions.Except for some organs of type Ⅲ,the binary model with W=a.((DBH)b.Hc)had the best fitting effect.(3)The measured BCEF,WD and RSR were all higher than the IPCC default values.The BCEF values of types Ⅰ,Ⅱ,Ⅲ and the whole were 18.02％,23.40％,31.04％and 24.03％higher than the IPCC default values respectively;WD was 35.15％,37.87％,39.75％and 37.87％higher;RSR was 35.00％,17.73％,23.64％and 25.00％higher.This study could provide reference for improving the carbon measurement parameter system of the IPCC and the national standard and improving the accounting accuracy of regional forest carbon stocks.关键词
川中丘陵区/人工柏木林/生物量模型/碳计量参数/立地类型Key words
hilly area in central Sichuan/artificial cypress forests/biomass model/carbon measurement parameter/site type引用本文复制引用
李永骏,宋强,王仙芝,何潇,蒋川东,刘一丁,陈俊华,赵银兵..川中丘陵区人工柏木林不同立地生物量碳计量模型[J].四川林业科技,2025,46(5):1-10,10.基金项目
四川省林草科技创新团队(2025LCTD0302) （2025LCTD0302）
四川省自然科学基金面上项目(2024NSFSC0113) （2024NSFSC0113）
