摘要
通过野外调查和室内分析,对秦岭松栎混交林碳密度的空间分布特征进行了研究。结果表明:(1)松栎混交林生态系统碳密度为(231.79±8.46)t·hm-2,其中植被层、土壤层、凋落物层碳密度分别为(111.72±6.55)、(110.74±6.72)、(9.33±0.75)t·hm-2,分别占整个松栎混交林生态系统碳密度的48.20%、47.77%、4.03%。(2)乔木层碳密度为(97.54±5.67)t·hm-2,占植被层碳密度的87.31%,占整个生态系统碳密度的42.08%;乔木层碳密度中,树干所占比例最大,为47.32%。(3)松栎混交林乔木层年净生产力为(5.55±0.54)t·hm-2·a-1,年净固碳量为(3.04±0.32)t·hm-2·a-1,年净吸收CO2量为(11.14±0.75)t·hm-2·a-1。
Plot investigation combined with biomass measurement was conducted to test the spatial distribution of carbon density in an pine-oak mixed forest in the Qinling Mountain .The total carbon density ( TCD ) in the pine-oak mixed forest is (231.79±8.46)t· hm^-2, (111.72±6.55)t· hm^-2 in the vegetation, (110.74±6.72)t· hm^-2 in soil layer and (9.33± 0.75)t· hm^-2 in litter layer accounting for 48.20%, 47.77% and 4.03% of the TCD in the whole ecosystem, respec-tively.Carbon stock of trees is (97.54±5.67)t· hm^-2 accounting for 87.31%of the vegetation and 42.08%of the whole ecosystem.The stem accumulates 47.32%of the tree TCD in tree layer.The annual net primary productivity in pine-oak mixed forest ecosystem is (5.55±0.54)t· hm^-2· a^-1, annual carbon stock is (3.04±0.32)t· hm^-2· a^-1, and the CO2 uptake is (11.14±0.75)t· hm^-2· a^-1.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2014年第1期47-50,共4页
Journal of Northeast Forestry University
基金
国家林业公益性行业科研专项(201004036)
关键词
碳密度
空间分布
松栎混交林
秦岭
Carbon density
Spatial distribution
Pine-oak mixed forest
Qinling Mountain