大岗山自然保护区典型亚热带常绿阔叶林固碳能力调查  

Investigation on Carbon Sequestration Capacity of Typical Subtropical Evergreen Broad-leaved Forests in Dagangshan Nature Reserve

作　　者：张秋根[1] 夏威 丁园[1] 李剑[1] ZHANG Qiu-gen;XIA Wei;DING Yuan;LI Jian(School of Environment and Chemistry Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学环境与化学工程学院,南昌330063

出　　处：《南昌航空大学学报（自然科学版）》2022年第1期93-99,共7页Journal of Nanchang Hangkong University(Natural Sciences)

基　　金：江西省重点研发计划项目(20181ACG70021)。

摘　　要：为了解江西省大岗山自然保护区森林生态系统吸收CO_(2)对减缓温室效应的贡献,本文设置9块样地(每块20 m×20 m)实地调查2015年和2020年该保护区甜槠栲、木荷、青冈栎3种亚热带常绿阔叶林的生物量、土壤容重,测试分析其植被和土壤有机碳含量,计算植被碳密度与碳储量、土壤碳密度与碳储量,据此分析2015年和2020年江西省大岗山自然保护区典型亚热带常绿阔叶林的固碳能力变化。调查结果表明:植被平均碳密度从2015年的89.95 t/hm^(2)增加到2020年的105.29 t/hm^(2),增长了17.05%,其中乔木层碳密度从2015年的85.97 t/hm^(2)变为2020年的104.02 t/hm^(2),而灌木层、草本层、凋落物层2020年的碳密度均比2015年有所下降;土壤平均碳密度均随土层深度的增加而减少,但2020年的土壤平均碳密度低于2015年。森林平均碳储量从2015年的12113.92 kg下降到为2020年的11319.84 kg,其中植被平均碳储量从2015年的3598.00 kg增加到2020年的4211.60 kg,增加17.05%;而土壤碳储量则从2015年的8515.92 kg下降为2020年的7108.24 kg,下降16.53%;2020年土壤总碳储量(7108.24 kg)为植被总碳储量(4211.60 kg)的1.69倍,而2015年则为2.37倍。In order to learn the contribution of forest ecosystems of Dagangshan National Nature Reserve in Jiangxi Province in reducing the greenhouse effect,nine plots(each 20 m×20 m)were sampled to investigate the biomass and soil bulk density of three typical subtropical evergreen broad-leaved forests including Castanopsis eyrei,Schima superba,Cyclobalanopsis glauca in 2015 and 2020.The carbon density and carbon storage of vegetation and soil were calculated according to the organic carbon content of vegetation and soil.The changes in carbon sequestration capacity of three typical subtropical evergreen broad-leaved forests in 2015 and 2020 were analyzed.The results showed that the average carbon density of the forest vegetation layer had increased from 89.95 t/hm^(2)in 2015 to 105.29 t/hm^(2)in 2020,of which the arbor layer had increased from 85.97 t/hm^(2)in 2015 to 104.02 t/hm^(2)in 2020,while the shrub layer,herbaceous layer and litter layer was lower in 2020 than in 2015.The average carbon density in soil both decreased with the increasing soil depth,but it’s higher in 2015 than in 2020.The forest average carbon storage in the sampled plots decreased from 12113.92 kg in 2015 to 11319.84 kg in 2020 with a decrease of 6.56%,of which 3598.00 kg stored in vegetation in 2015 and 4211.60 kg in 2020,while the average soil carbon storage decreased from 8515.92 kg in 2015 to 7108.24 kg in 2020 with a decrease of 16.53%.The total soil carbon storage in 2020 was 1.69 times that of vegetation(4211.60 kg),while it was 2.37 times in 2015.

关 键 词：大岗山自然保护区 亚热带常绿阔叶林 有机碳含量 碳储量 碳密度 植被 土壤 

分 类 号：Q948[生物学—植物学]