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Title: Soil respiration across a permafrost transition zone: spatial structure and environmental correlates

Journal Article · · Biogeosciences (Online)
 [1];  [1]; ORCiD logo [2]; ORCiD logo [1];  [3];  [4]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Biological Sciences Division
  2. Pacific Northwest National Lab. (PNNL), College Park, MD (United States). Joint Global Change Research Inst.
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Atmospheric Science and Global Change Div. (ASGC)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)

Soil respiration is a key ecosystem function whereby shifts in respiration rates can shift systems from carbon sinks to sources. Soil respiration in permafrost-associated systems is particularly important given climate change driven permafrost thaw that leads to significant uncertainty in resulting ecosystem carbon dynamics. Here we characterize the spatial structure and environmental drivers of soil respiration across a permafrost transition zone. We find that soil respiration is characterized by a non-linear threshold that occurs at active-layer depths greater than 140 cm. We also find that within each season, tree basal area is a dominant driver of soil respiration regardless of spatial scale, but only in spatial domains with significant spatial variability in basal area. Our analyses further show that spatial variation (the coefficient of variation) and mean-variance power-law scaling of soil respiration in our boreal system are consistent with previous work in other ecosystems (e.g., tropical forests) and in population ecology, respectively. Comparing our results to those in other ecosystems suggests that temporally stable features such as tree-stand structure are often primary drivers of spatial variation in soil respiration. If so, this provides an opportunity to better estimate the magnitude and spatial variation in soil respiration through remote sensing. Finally, combining such an approach with broader knowledge of thresholding behavior – here related to active layer depth – would provide empirical constraints on models aimed at predicting ecosystem responses to ongoing permafrost thaw.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1398215
Report Number(s):
PNNL-SA-122396
Journal Information:
Biogeosciences (Online), Vol. 14, Issue 18; ISSN 1726-4189
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (51)

Patchiness of River?Groundwater Interactions within Two Floodplain Landscapes and Diversity of Aquatic Invertebrate Communities journal December 2003
Climate change and the permafrost carbon feedback journal April 2015
Effect of forest structure on the spatial variation in soil respiration in a Bornean tropical rainforest journal October 2009
Soil moisture induced changes on fine-scale spatial pattern of soil respiration in a semi-arid sandy grassland journal January 2014
Soil CO 2 efflux measurements in a mixed forest: impact of chamber disturbances, spatial variability and seasonal evolution: SOIL CO 2 EFFLUX IN A MIXED FOREST journal December 2000
Geostatistics with the Matern semivariogram model: A library of computer programs for inference, kriging and simulation journal September 2008
Carbon dioxide efflux from the floor of a boreal aspen forest. I. Relationship to environmental variables and estimates of C respired journal May 1998
The Matérn function as a general model for soil variograms journal October 2005
Geostatistical characterisation of soil moisture patterns in the Tarrawarra catchment journal February 1998
Temporal and spatial variation of soil CO2 efflux in a Canadian boreal forest journal January 2000
Spatial variability of soil respiration in a larch plantation: estimation of the number of sampling points required journal March 2003
Estimating regression models with unknown break-points journal January 2003
Separation of root and heterotrophic respiration within soil respiration by trenching, root biomass regression, and root excising methods in a cool-temperate deciduous forest in Japan journal December 2012
Retrieval of forest structural parameters using LiDAR remote sensing journal May 2010
Spatial variation of soil respiration is linked to the forest structure and soil parameters in an old-growth mixed broadleaved-Korean pine forest in northeastern China journal November 2015
Soil Anaerobiosis, Microorganisms, and Root Function journal September 1980
Expert assessment of vulnerability of permafrost carbon to climate change journal March 2013
Patchiness of River–Groundwater Interactions within Two Floodplain Landscapes and Diversity of Aquatic Invertebrate Communities journal November 2003
Soil and root respiration in mature Alaskan black spruce forests that vary in soil organic matter decomposition rates journal January 2005
Soil water content and temperature as independent or confounded factors controlling soil respiration in a temperate mixed hardwood forest journal February 1998
Long-term CO2 production following permafrost thaw journal July 2013
Spatial and temporal variations in soil respiration in relation to stand structure and soil parameters in an unmanaged beech forest journal November 2005
Seasonal and topographic patterns of forest floor CO2 efflux from an upland oak forest journal July 1993
Principles of geostatistics journal December 1963
On the Temperature Dependence of Soil Respiration journal June 1994
The effects of an induced short-term drought period on the spatial variations in soil respiration measured around emergent trees in a typical bornean tropical forest, Malaysia journal October 2014
Soil CO2 efflux in a tropical forest in the central Amazon journal May 2004
Real-time automatic interpolation of ambient gamma dose rates from the Dutch radioactivity monitoring network journal August 2009
Spatial heterogeneity of soil respiration in a seasonal rainforest with complex terrain journal January 2013
Remote sensing of net ecosystem productivity based on component spectrum and soil respiration observation in a boreal forest, interior Alaska: REMOTE SENSING OF NEP journal March 2004
The relationship between population size and temporal variability in population size journal February 2004
Fluctuation scaling in complex systems: Taylor's law and beyond1 journal January 2008
Effects of forest floor organic layer and root biomass on soil respiration following boreal forest fire journal April 2008
Warm spring reduced carbon cycle impact of the 2012 US summer drought journal April 2016
Temporal and spatial variability of soil respiration in a boreal mixedwood forest journal November 2006
Assessing and Interpreting the Spatial Distributions of Insect Populations journal January 1984
Aggregation, migration and population mechanics journal February 1977
Responses of Soil, Heterotrophic, and Autotrophic Respiration to Experimental Open-Field Soil Warming in a Cool-Temperate Deciduous Forest journal December 2015
Aggregation, Variance and the Mean journal March 1961
Environmental Factors and Ecological Processes in Boreal Forests journal November 1989
Spatial heterogeneity of soil CO2 efflux after harvest and prescribed fire in a California mixed conifer forest journal May 2014
Spatial variability and optimal sampling strategy of soil respiration journal February 2008
Temperature-associated increases in the global soil respiration record journal March 2010
Seasonal and spatial variability of soil respiration in four Sitka spruce stands journal August 2006
Vulnerability of high-latitude soil organic carbon in North America to disturbance journal January 2011
Parameterization improvements and functional and structural advances in Version 4 of the Community Land Model: PARAMETERIZATION IMPROVEMENTS AND FUNCTIONAL AND STRUCTURAL ADVANCES journal January 2011
Global patterns of carbon dioxide emissions from soils journal March 1995
Soil organic carbon pools in the northern circumpolar permafrost region: SOIL ORGANIC CARBON POOLS journal June 2009
Seasonal changes in the contribution of root respiration to total soil respiration in a cool-temperate deciduous forest book January 2003
Seasonal changes in the contribution of root respiration to total soil respiration in a cool-temperate deciduous forest journal August 2003
Pulsars and Gravitational Wave Detection text January 2004

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