浙江省森林生态系统碳储量及其分布特征  

Carbon storage and its distribution of forest ecosystems in Zhejiang Province, China

作　　者：李银[1,2] 陈国科[1] 林敦梅[3] 陈彬[4] 高雷明[1] 简兴[5] 杨波[6] 徐武兵[1,2] 苏宏新[1] 赖江山[1] 王希华[7] 杨海波[7] 马克平[1] 

机构地区：[1]中国科学院植物研究所植被与环境变化国家重点实验室,北京100093 [2]中国科学院大学,北京100049 [3]重庆大学三峡库区生态环境教育部重点实验室,重庆400044 [4]上海辰山植物园,上海200062 [5]安徽科技学院城建与环境学院,安徽蚌埠233300 [6]景德镇学院,江西景德镇333000 [7]华东师范大学生态与环境科学学院,上海200062

出　　处：《植物生态学报》2016年第4期354-363,共10页Chinese Journal of Plant Ecology

基　　金：中国科学院战略性先导科技专项(XDA-05050204)

摘　　要：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。Aims The concentration of CO2 and other greenhouse gases in the atmosphere has considerably increased over last century and is set to rise further. Forest ecosystems play a key role in reducing CO2 concentration in the atmosphere and mitigating global climate change. Our objective is to understand carbon storage and its distribution in forest ecosystems in Zhejiang Province, China.Methods By using the 8th forest resource inventory data and 2011-2012 field investigation data, we estimated carbon storage, density and its distribution in forest ecosystems of Zhejiang Province. Important findings The carbon storage of forest ecosystems in Zhejiang Province was 602.73 Tg, of which 122.88 Tg in tree layer, 16.73 Tg in shrub-herb layer, 11.36 Tg in litter layer and 451.76 Tg in soil layer accounting for 20.39%, 2.78%, 1.88% and 74.95% of the total carbon storage, respectively. The carbon storage of mixed broadleaved forests was 138.03 Tg which ranked the largest（22.90%） among all forest types. The young and middle aged forests which accounted for 70.66% of the total carbon storage were the main body of carbon storage in Zhejiang Province. The carbon density of forest ecosystems in Zhejiang Province was 120.80 t·hm^-2 and that in tree layer, shrub-herb layer, litter layer and soil layer were 24.65 t·hm^-2, 3.36 t·hm^-2, 2.28 t·hm^-2 and 90.51 t·hm^-2, respectively. The significant relationship between soil organic carbon storage and forest ecosystem carbon storageindicated that soil carbon played an important role in shaping forest ecosystem carbon density. Carbon density of tree layer increased with age in natural forests, but decreased in the order over-mature 〉near-mature 〉mature〉 middle-aged 〉young forest in plantations. The proportions of young and middle aged forests were larger than any other age classes. Thereby, the carbon storage of forest ecosystems in Zhejiang Province could be increased through a proper forest management.

关 键 词：森林生态系统 碳储量 碳密度 空间分布 浙江省 

分 类 号：S718.55[农业科学—林学]