The Northern Circumpolar Soil Carbon Database: spatially distributed datasets of soil coverage and soil carbon storage in the northern permafrost regions
The Northern Circumpolar Soil Carbon Database: spatially distributed datasets of soil coverage and soil carbon storage in the northern permafrost regions
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DOI：
10.5194/essd-5-3-2013
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发表时间：
2013-01-01
影响因子：
11.4
通讯作者：
Swanson, D. K.
中科院分区：
文献类型：
--
作者：
Hugelius, G.;Tarnocai, C.;Swanson, D. K.
高纬度陆地生态系统是全球碳循环的关键组成部分。全球土壤有机碳（SOC）的估计，但是，不包括更新的估计SOC存储在受冻土影响的土壤或代表的独特成壤过程，影响这些土壤。北方环极土壤碳数据库（NCSCD）的建立是为了量化环极多年冻土区（18.7 x 10（6）km（2））的SOC储量。NCSCD是一个基于GIS的数字数据库，由协调的区域土壤分类图汇编而成，其中土壤阶覆盖数据与北方永久冻土区的土壤数据（n = 1778）相关联，以计算SOC含量和质量。此外，还生成了不同空间分辨率的新网格数据集，以便利使用NCSCD（用于地理信息系统的标准光栅格式和数字模型应用程序通用的网络通用数据格式文件）的研究应用。本文介绍了NCSCD空间框架的编制，土壤采样和土壤分析程序，用于获得土壤有机碳含量从北美和欧亚大陆的pedons和格式的数字文件，可在网上。讨论了NCSCD在空间分析中的应用前景和局限性。
High-latitude terrestrial ecosystems are key components in the global carbon (C) cycle. Estimates of global soil organic carbon (SOC), however, do not include updated estimates of SOC storage in permafrost-affected soils or representation of the unique pedogenic processes that affect these soils. The Northern Circumpolar Soil Carbon Database (NCSCD) was developed to quantify the SOC stocks in the circumpolar permafrost region (18.7 x 10(6) km(2)). The NCSCD is a polygon-based digital database compiled from harmonized regional soil classification maps in which data on soil order coverage have been linked to pedon data (n = 1778) from the northern permafrost regions to calculate SOC content and mass. In addition, new gridded datasets at different spatial resolutions have been generated to facilitate research applications using the NCSCD (standard raster formats for use in geographic information systems and Network Common Data Form files common for applications in numerical models). This paper describes the compilation of the NCSCD spatial framework, the soil sampling and soil analytical procedures used to derive SOC content in pedons from North America and Eurasia and the formatting of the digital files that are available online. The potential applications and limitations of the NCSCD in spatial analyses are also discussed.