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Global Distribution of Soil Organic Carbon, Based on the Harmonized World Soil Database – Part 1: Masses and Frequency Distribution of Soc Stocks for the Tropics, Permafrost Regions, Wetlands, and the World : Volume 1, Issue 1 (03/09/2014)

By Köchy, M.

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Book Id: WPLBN0004022309
Format Type: PDF Article :
File Size: Pages 36
Reproduction Date: 2015

Title: Global Distribution of Soil Organic Carbon, Based on the Harmonized World Soil Database – Part 1: Masses and Frequency Distribution of Soc Stocks for the Tropics, Permafrost Regions, Wetlands, and the World : Volume 1, Issue 1 (03/09/2014)  
Author: Köchy, M.
Volume: Vol. 1, Issue 1
Language: English
Subject: Science, Soil, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Freibauer, A., Hiederer, R., & Köchy, M. (2014). Global Distribution of Soil Organic Carbon, Based on the Harmonized World Soil Database – Part 1: Masses and Frequency Distribution of Soc Stocks for the Tropics, Permafrost Regions, Wetlands, and the World : Volume 1, Issue 1 (03/09/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Thünen Institute of Market Analysis, Braunschweig, Germany. The global soil organic carbon (SOC) mass is relevant for the carbon cycle budget. We review current estimates of soil organic carbon stocks (mass/area) and mass (stock × area) in wetlands, permafrost and tropical regions and the world in the upper 1 m of soil. The Harmonized World Soil Database (HWSD) v.1.2 provides one of the most recent and coherent global data sets of SOC, giving a total mass of 2476 Pg. Correcting the HWSD's bulk density of organic soils, especially Histosols, results in a mass of 1062 Pg. The uncertainty of bulk density of Histosols alone introduces a range of −56 to +180 Pg for the estimate of global SOC in the top 1 m, larger than estimates of global soil respiration. We report the spatial distribution of SOC stocks per 0.5 arc minutes, the areal masses of SOC and the quantiles of SOC stocks by continents, wetland types, and permafrost types. Depending on the definition of wetland, wetland soils contain between 82 and 158 Pg SOC. Incorporating more detailed estimates for permafrost from the Northern Circumpolar Soil Carbon Data Base (496 Pg SOC) and tropical peatland carbon, global soils contain 1324 Pg SOC in the upper 1 m including 421 Pg in tropical soils, whereof 40 Pg occur in tropical wetlands. Global SOC amounts to just under 3000 Pg when estimates for deeper soil layers are included. Variability in estimates is due to variation in definitions of soil units, differences in soil property databases, scarcity of information about soil carbon at depths > 1 m in peatlands, and variation in definitions of peatland.

Summary
Global distribution of soil organic carbon, based on the Harmonized World Soil Database – Part 1: Masses and frequency distribution of SOC stocks for the tropics, permafrost regions, wetlands, and the world

Excerpt
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