重庆铁山坪马尾松林生态系统碳贮量及其分配特征  

Carbon Storage and Distribution of Pinus massoniana Forest Ecosystem in Tieshanping of Chongqing

作　　者：张治军[1] 张小全[1] 王彦辉[1] 罗云建[2] 李志勇[3] 曹磊[4] 

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所,北京100091 [2]中国科学院生态环境研究中心,北京100085 [3]河南科技大学农学院,洛阳471003 [4]承德市环境保护局,承德067000

出　　处：《林业科学》2009年第5期49-53,共5页Scientia Silvae Sinicae

基　　金：国家林业局天然林保护工程科技支撑项目课题“天然林保护工程区森林灾害预防技术(TBKJ2003-04)”;国家科技支撑计划课题“都市重要水源区水源涵养林构建技术试验示范”;中挪合作项目“中国酸沉降综合影响观测研究”;国家林业局森林生态环境重点实验室资助

摘　　要：分析重庆铁山坪46年(42～51年)生马尾松次生林的生物量、碳贮量及其空间分布特征。结果表明:马尾松林生物量为142.06t·hm-2,乔木层(89.91%)>灌木层(5.61%)>枯枝落叶层(2.98%)>草本层(1.50%);马尾松林生态系统的总有机碳贮量为197.78t·hm-2,乔木层为76.06t·hm-2(38.45%),灌木层为3.55t·hm-2(1.79%),草本层为0.88t·hm-2(0.44%),现存凋落物层为2.34t·hm-2(1.17%),土壤层为114.96t·hm-2(58.13%);马尾松各器官的碳贮量与其生物量成正比,树干的碳贮量最高,占乔木层碳贮量的75.06%;马尾松林年净生物量增长量为9.01t·hm-2a-1,年净固碳量为4.49t·hm-2a-1,折合成CO2为16.46t·hm-2a-1。The biomass, carbon storage and spatial distribution of 46-old-years （42-old-years to 51-old-years） Pinus rnassoniana nature secondary forest were studied in Tieshanping of ChongQing. The results showed that the total biomass is 142.06 t·hm^-2, the distributing sequence of the biomass of the forest ecosystem is： arbor layer（89.91% ） 〉 shrub layer（5.61% ） 〉 Standing litters（2.98%） 〉 〉 herb（1.50%）. The total organic carbon storage in forest ecosystem amounted to 197.78 t C·hm^-2, of which trees layer stored 76.06 t C·hm^-2 and accounted for 38.45%, shrub layer stored 3.55 t C·hm^-2 and accounted for 1.79 %, herb layer stored 0.88 t C·hm^-2 and accounted to 0.44 %, standing litters mass layer stored 2.34 t C ·hm^-2 and accounted to 1.17%, and soil stored 114.96 t C·hm^-2 and accounted to 58.13%. The carbon storage in different organs was positively related to the biomass of corresponding organs. Stem accumulated the highest biomass, which also stored the highest carbon storage and comprised 75.06 % of carbon storage in arbor layer. The annual net productivity of Pinus Massoniana trees was 9.01 t·hm^-2^a-1, and annual carbon storage was up to 4.49 t C·hm^-2^a-1, amounted CO2 to 16.46 t CO2 ·hm^-2^a-1.

关 键 词：碳贮量 碳分配 固碳能力 马尾松次生林 重庆铁山坪 

分 类 号：S718.55[农业科学—林学] Q948[生物学—植物学]