摘要
科学量化华山松林固碳释氧功能对区域森林生态补偿决策具有重要参考意义。以不同龄组(中龄林、近熟林、成熟林和过熟林)华山松人工林为研究对象,通过野外标准地调查,结合不同龄组华山松乔木层器官含碳率进行碳密度估算,并以成熟林或过熟林的平均碳密度为基准水平对固碳释氧能力进行分析。结果表明:华山松中龄林以第Ⅰ和第Ⅱ径级小树为主,具有较好的生长潜力,成熟林和过熟林中径级分布以大径级木为主,高度级分布更为均匀,群落结构更稳定;4个龄组生物量和碳密度均呈现成熟林>过熟林>近熟林>中龄林的结构,分别为244.6和108.1 t/hm^(2)、202.4和89.5 t/hm^(2)、170.5和83.8 t/hm^(2)、87.3和41.6 t/hm^(2),各器官生物量与碳密度呈现干>枝>根>叶的状态;当华山松中龄林、近熟林、成熟林和过熟林的林分密度达到3200、2000、1200、600株/hm^(2)时,碳密度达到最大值;华山松中龄林、近熟林、成熟林和过熟林同化大气中CO 2和释放出O 2价值量分别是183161.6和111007.0元/hm^(2),368579.2和223381.4元/hm^(2)、475581.8和288231.4元/hm^(2)、393739.6和238630.1元/hm^(2)。研究结果为科学度量乌蒙山区华山松人工林碳密度提供依据,为区域合理经营管理提供参考。建议重点保护和经营华山松中龄林和近熟林,合理开发利用成熟林和过熟林。
Carbon sequestration and oxygen release capacity of Pinus armandii forest can be expected to accurately quantified for the decision-making on the ecological compensation of regional forest.This study took the P.armandii plantation in different age groups(middle-aged,nearly mature,mature,and over-mature forest)as the research object.The carbon density was estimated to combine with the carbon content of tree layer organs in different age groups.The average carbon density of mature forest or over-mature forest was used as the benchmark level to analyze the carbon sequestration and oxygen release capacity.The results showed that the middle-aged forest of P.armandii was composed of the small trees of diameter classⅠandⅡ,indicating the excellent growth potential.The diameter class distribution of mature forest and over-mature forest was composed of the large diameter class trees,whereas,the height class distribution was more uniform with the stable community structure.The biomass and carbon density of the four age groups were ranked in the descending order of the mature forest>over-mature forest>near mature forest>middle-aged forest,which were 244.6 t·hm^(-2) and 108.1 t·hm^(-2),202.4 t·hm^(-2) and 89.5 t·hm^(-2),170.5 t·hm^(-2) and 83.8 t·hm^(-2),87.4 t·hm^(-2) and 41.6 t·hm^(-2),respectively.The biomass and carbon density of all organs were ranked in the order of the stem>branch>root>leaf.Furthermore,the maximum carbon density reached,when the stand densities of middle-aged forest,near mature forest,mature forest and over-mature forest reached 3200,2000,1200,and 600 trees·hm^(-2).The atmospheric CO 2 and O 2 released by the middle-aged forest,near mature forest,mature forest,and over-mature forest of P.armandii were 183161.6 Yuan·hm^(-2) and 111007.0 Yuan·hm^(-2),368579.2 Yuan·hm^(-2) and 223381.4 Yuan·hm^(-2),475581.8 Yuan·hm^(-2) and 288231.4 Yuan·hm^(-2),as well as 393739.6 and 238630.1 Yuan·hm^(-2),respectively.The findings can provide a strong reference to measure the carbon density of P.arma
作者
曹欣媛
袁丛军
王浩东
陈梦
李君一
单绍朋
姜克
张家才
CAO Xin-yuan;YUAN Cong-jun;WANG Hao-dong;CHEN Meng;LI Jun-yi;SHAN Shao-peng;JIANG Ke;ZHANG Jia-cai(School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044;College of forestry,Guizhou University,Guiyang,Guizhou 550025;Guizhou Academy of Forestry,Guiyang,Guizhou 550005;Bijie Forestry Bureau of Guizhou Province,Bijie,Guizhou 551700;Hezhang County Forestry Bureau,Hezhang,Guizhou 553200)
出处
《贵州林业科技》
2023年第1期32-38,31,共8页
Guizhou Forestry Science and Technology
基金
贵州天然林保护专项
贵州省科技条件与服务能力建设项目(黔科合服企[2020]4010)
贵州省林业局2013年度林业重大问题调研课题《贵州森林生态系统碳汇监测与碳汇产品价值实现路径研究》。
关键词
华山松
碳密度
密度效应
龄组
生物量
Pinus armandii
carbon density
density effect
age group
biomass of organs
