摘要
基于福建龙岩地区多目标区域地球化学调查所获得大量高精度和高密度有机碳数据,通过单位土壤碳储量计算方法,分别采用母质类型、地貌类型、生态系统、土地利用类型及土壤类型5种方式,按照0～1.4m,0～1.0m和0～0.2m等3种不同深度来初步探讨福建龙岩地区土壤有机碳储量特征及其影响因素。结果表明,不同类型土壤区的有机碳储量分布存在不均匀性,平均碳密度均存在较大差异,这可能不仅与成土母质、土壤理化性状(如土壤结构、质地、化学成分、土温等)、系统差异(如历史演变、稳定性等)等内在因素有关,还有可能与气候环境条件、海拔高度、水土流失程度、土壤微生物活动强度、植被状况(如植被类型、植被发育等)以及人类活动影响等外在因素有关。得出福建龙岩地区不同深度的有机碳储量:0～0.2m为89254953.05t,0～1.0m为283746254.26t和0～1.4m为347294329.32t;不同深度的平均碳密度:0～0.2m为3980.33t/km^2,0～1.0m为12653.69 t/km^2和0～1.4m为15487.62 t/km^2,高于全国典型地区平均水平,显示出福建龙岩地区具较高的碳储量、较强的碳储能力和良好的碳富集环境。
In this paper,the soil organic carbon reserves were calculated by the calculation techniques of USCA（ Unit Soil Carbon Amount） on the basis of soil carbon data with high accuracy and density provided by the multi-purpose geochemical survey in Longyan area of Fujian Province,using a scheme of grid sampling and analyses from double layers（ surface and deep layer） ,and spatial distribution characteristics of organic carbon reserves in depth intervals 0 - 1.4m,0 ~ 1.0m and 0 ~0.2m and their impacting factors were analyzed in terms of soil parent material type, landform type, ecosystem, land use and soil type. It is clear that distribution of soil organic carbon reserves are nonuniform and their average soil organic carbon densities are diversity in Longyan area. They are not only mainly affected by immanent factors of the soil parent material,the soil physical and chemical properties（ such as texture, chemical ingredients and soil temperature）, evolution and stability of the system etc, but also external factors of climate condition, elevation, status of soil and water loss, kinetic intensity of microbe in the soil, vegetation status （ such as type and growth of vegetation） ,human activity and so on in Longyan area of Fujian Province. soil organic carbon reserves and their average soil organic carbon densities in depth intervals are listed in the following： 89254953.05t and 3980.33t/km2 in depth interval 0- 0. 2m; 283746254.26t and 12653.69t/km2 in depth interval 0- 1.0m; 347294329.32t and 15487.62t/km2 in depth interval 0- 1.4m in Longyan area, Fujian Province, all of them are higher than soil organic carbon reserves and average soil organic carbon densities which arc in typical regions of China. The results show that there are with high soil carbon reserves, strong carbon storage ability and good environment of enriched carbon in Longyan area,Fujian Province.
出处
《第四纪研究》
CAS
CSCD
北大核心
2012年第2期337-345,共9页
Quaternary Sciences
基金
福建省龙岩地区1:25万多目标区域地球化学调查项目(批准号:基[2008]GZTR01-05)资助
关键词
有机碳
土壤碳储量
特征研究
影响因素
福建龙岩
soil organic carbon reserves, study of characteristics,impacting factors, Longyan area of FujianProvince
作者简介
王文俊男29岁工程师／硕士地球化学专业E—mail：junww2006@sina．com
