作　　者： ; ; ; ; ; ;

机构地区： 中国林业科学研究院森林生态环境与保护研究所

出　　处： 《林业科学》 2009年第5期49-53,共5页

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

领　　域： [农业科学] [生物学]