中国东部地区典型森林类型土壤有机碳储量分析  

Soil Organic Carbon Storage in Typical Forestland in East China

作　　者：张城[1] 王绍强[1] 于贵瑞[1] 何洪林[1] 张文娟[1] 王伯伦[2] 陈庆美[1] 吴志峰[3] 

机构地区：[1]中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室,北京100101 [2]沈阳农业大学农学院,沈阳110161 [3]广东省生态环境与土壤研究所,广州510650

出　　处：《资源科学》2006年第2期97-103,共7页Resources Science

基　　金：国家重点基础研究发展规划项目"中国陆地生态系统碳循环及其驱动机制研究"(编号:2002CB412501);中国科学院地理科学与资源研究所主干科学计划"中国陆地生态系统土壤有机碳估算"(编号:CXIOG-E02-02-02)

摘　　要：森林土壤有机碳(SOC)是土壤有机碳库的重要组成部分,在土壤有机碳库研究中有着重要作用。本文对中国东部地区7个典型森林的土壤样区碳储量进行了野外调查与对比研究,分析了6种土壤类型和28种植被类型的SOC储量及其随深度的变化。结果表明,调查区域内SOC储量的分布范围在4.01kg^30.12kg/m3之间,在各土壤类型中,长白山棕黑毡土的有机碳储量最高,SOC储量为24.41kg/m3,千烟洲红壤的有机碳储量最低,SOC储量为6.47kg±1.01kg/m3;在各植被类型中,鸡公山的黄山松林SOC储量最高,SOC储量为30.12kg±22.76kg/m3。千烟洲常绿阔叶林土壤的有机碳储量最低,SOC储量为4.01kg±3.56kg/m3,部分地区SOC储量还有一定的增长潜力。年均温与SOC储量呈负相关,但7个典型森林类型土壤碳储量的分布,在由北向南的方向上没有明显的特征。初步分析认为,土地利用类型是影响本研究所调查地区SOC储量分布的主要因子。7个典型森林类型土壤碳储量随土层深度的下降而降低,其中自然林土壤碳储量降低幅度相对较大,人工林土壤碳储量降低的幅度相对较小。人工林土壤剖面上层SOC储量相对较低,导致了人工林土壤整体有机碳储量比较低。The forest soil organic carbon is one of the important parts of the whole soil organic carbon pool. Study on the forest soil organic carbon plays an important role in the research of the soil organic carbon pool. In this paper, soil organic carbon storage of 7 typical forestland in east China are investigated and comparative studies are also organized. The differences of the soil organic carbon storage among 6 different soil types and among 28 plant types and the variation of the soil organic carbon storage with the depth of soil profile are analyzed. The Results showed that the soil organic carbon storage ranged from 4.01 to 30. 12 kg/m^3 in different study regions. The maximum values of the soil organic carbon storage in all soil types is 24.41 kg/m^3 which appeared with brown blank fehy soil type at Changbai Mountain; and the minimum is 6.47± 1. 01 kg/m^3 which appeared with red soil type at Qianyanzhou. Furthermore, the maximum and the minimum values of the soil organic carbon storage in all plant types are respecively 30.12 ± 22.76 kg/ m^3 and 4.01 ± 3.56 kg/m^3 which appeared at Jigong Mountain and Qianyanzhou, and the dominant vegetation in two regions is Pinus taiwanensis and Schima argemtea. Some investigated areas still have much room for soil to store more organic carbons, as the age of the forest plantation is less than 20 years. Correlation analysis was conducted between the soil organic carbon storage and some climate factors of sampled locations. The results showed that there is a weak negative correlation between the soil organic carbon storage and the annual mean temperature with a correlation coefficient of - 0. 317 （ n = 64） and a weak positive correlation between the soil organic carbon storage and the mean annual precipitation with a correlation coefficient of 0. 112 （n = 64）. The soil organic carbon storage is not changed regularly from north to south when the temperature and precipitation increase. Comparing with the nature forest, the soil organic carbon storages in 3 forest pl

关 键 词：中国东部 典型森林 土壤有机碳 储量 

分 类 号：S714[农业科学—林学]