Spatial upscaling using thematic maps: An analysis of uncertainties in permafrost soil carbon estimates
نویسندگان
چکیده
منابع مشابه
Permafrost – Physical Aspects, Carbon Cycling, Databases and Uncertainties
Abstract Permafrost is defi ned as ground that remains below 0°C for at least 2 consecutive years. About 24% of the northern hemisphere land area is underlain by permafrost. The thawing of permafrost has the potential to infl uence the climate system through the release of carbon (C) from northern high latitude terrestrial ecosystems, but there is substantial uncertainty about the sensitivity o...
متن کاملHigh-resolution mapping and spatial variability of soil organic carbon storage in permafrost environments
Large amounts of carbon are stored in soils of the northern circumpolar permafrost region. Highresolution mapping of this soil organic carbon (SOC) is important to better understand and predict local to global scale carbon dynamics. In this thesis, studies from five different areas across the permafrost region indicate a pattern of generally higher SOC storage in Arctic tundra soils compared to...
متن کاملEmpirical estimates to reduce modeling uncertainties of soil organic carbon in permafrost regions: a review of recent progress and remaining challenges
The vast amount of organic carbon (OC) stored in soils of the northern circumpolar permafrost region is a potentially vulnerable component of the global carbon cycle. However, estimates of the quantity, decomposability, and combustibility of OC contained in permafrost-region soils remain highly uncertain, thereby limiting our ability to predict the release of greenhouse gases due to permafrost ...
متن کاملUsing Information about Spatial Variability to Improve Estimates of Total Soil Carbon
Changes in soil C as a result of changes in management are relatively slow, and several years of experimentation are needed before differences in management practices can be detected using traditional statistical procedures such as randomized complete block design (RCBD). Using spatial analyses (SA) that take into account spatial variability between plots has a potential for faster and more eff...
متن کاملSoil organic carbon pools in the northern circumpolar permafrost region
[1] The Northern Circumpolar Soil Carbon Database was developed in order to determine carbon pools in soils of the northern circumpolar permafrost region. The area of all soils in the northern permafrost region is approximately 18,782 10 km, or approximately 16% of the global soil area. In the northern permafrost region, organic soils (peatlands) and cryoturbated permafrost-affected mineral soi...
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ژورنال
عنوان ژورنال: Global Biogeochemical Cycles
سال: 2012
ISSN: 0886-6236
DOI: 10.1029/2011gb004154