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利用2011~(–2)012年野外标准地实测资料,结合第八次全国森林资源清查资料,研究了浙江省森林生态系统碳储量及其分布特征。结果表明:浙江省森林生态系统碳储量为602.73 Tg,其中乔木层、灌草层、凋落物层和土壤层碳储量分别为122.88 Tg、16.73 Tg、11.36 Tg和451.76 Tg,分别占生态系统碳储量的20.39%、2.78%、1.88%和74.95%;在各森林类型中,阔叶混交林碳储量为138.03 Tg,所占比例最大(22.90%);在森林各龄组中,幼、中龄林约占浙江省森林生态系统碳储量的70.66%,是碳储量的主要贡献者。浙江省森林生态系统平均碳密度为120.80 t·hm~(–2),乔木层、灌草层、凋落物层和土壤层碳密度分别为24.65 t·hm~(–2)、3.36 t·hm~(–2)、2.28 t·hm~(–2)和90.51 t·hm~(–2)。浙江省森林生态系统土壤层碳储量和生态系统碳储量呈极显著相关关系,说明土壤层碳储量对浙江省森林生态系统碳储量贡献较大。浙江省天然林乔木层碳密度整体表现为过熟林>成熟林>近熟林>中龄林>幼龄林,而人工林乔木层碳密度表现为过熟林>近熟林>成熟林>中龄林>幼龄林。浙江省幼、中龄林林分面积占比重较大,占全省森林面积的76.76%,若对现有森林进行更好的经营和管理,可以增加浙江省森林的碳固存能力。
Based on field data measured in 2011 ~ (-2) 012 and the eighth national inventory of forest resources, the carbon stocks and their distribution characteristics of forest ecosystems in Zhejiang Province were studied. The results showed that the carbon storage of forest ecosystem in Zhejiang Province was 602.73 Tg. The carbon storage of arbor, shrub layer, litterfall layer and soil layer were 122.88 Tg, 16.73 Tg, 11.36 Tg and 451.76 Tg respectively, Of the total forest, 20.39%, 2.78%, 1.88% and 74.95% respectively. Among the different forest types, the carbon storage of broad-leaved mixed forest was 138.03 Tg, accounting for the largest proportion (22.90% Accounting for about 70.66% of the forest ecosystem carbon storage in Zhejiang Province, which is the main contributor to carbon storage. The average carbon density of forest ecosystems in Zhejiang Province was 120.80 t · hm -2. The carbon densities of arbor, shrub layer, litterfall layer and soil layer were 24.65 t · hm -2 and 3.36 t · hm, respectively ~ (-2), 2.28 t · hm -2 and 90.51 t · hm -2. There was a significant correlation between soil carbon storage and ecosystem carbon storage in forest ecosystems in Zhejiang Province, indicating that carbon storage in soil layers contributed significantly to carbon storage in forest ecosystems in Zhejiang Province. The carbon density of arborous layer in natural forests in Zhejiang Province showed the over-mature forest> mature forest> near-mature forest> middle-aged forest> young forest, while the arborous layer carbon density of over- Middle-aged forest> young forest. Zhejiang Province has a large proportion of young and middle-aged forest stands, accounting for 76.76% of the total forest area in the province. Better management and management of existing forests can increase the carbon sequestration capacity of forests in Zhejiang Province.