Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Observing and Simulating Spatial Variations of Forest Carbon Stocks in Complex Terrain

Journal Article · · Journal of Geophysical Research. Biogeosciences
DOI:https://doi.org/10.1029/2019jg005160· OSTI ID:1802303
 [1];  [2];  [2];  [2];  [2];  [2]
  1. Pennsylvania State Univ., University Park, PA (United States); OSTI
  2. Pennsylvania State Univ., University Park, PA (United States)

The terrestrial carbon (C) cycle remains the least constrained component in the global C cycle, partly due to the difficulty of quantifying C sources and sinks in complex terrain. In this paper, we used observations at the Shale Hills Critical Zone Observatory and a biogeochemistry model, Biome-BGC, to study the spatial distribution of C stocks and fluxes in a first-order watershed. The model simulated the average C pools and fluxes in the watershed after constraining three model parameters with observations. The model was able to generate the observed spatial patterns of C pools in the watershed, with higher biomass and soil C in the valley and lower values on the ridgetop, though the model underestimated the ridgetop to valley differences. We examined the simulated effect of four environmental factors, soil moisture, soil temperature, nitrogen (N) availability and solar radiation, on the spatial distribution of C pools. Among these factors, soil water and N availability coupled together dominate the spatial distribution of aboveground biomass. Soil water was the most important factor controlling soil C. These results are highly sensitive to van Genuchten parameters, which describe the soil water retention curve. This study highlights the importance of the hydrologic system in describing within-watershed structure in terrestrial C stocks.

Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF)
Grant/Contract Number:
SC0012003
OSTI ID:
1802303
Alternate ID(s):
OSTI ID: 1592204
Journal Information:
Journal of Geophysical Research. Biogeosciences, Journal Name: Journal of Geophysical Research. Biogeosciences Journal Issue: 1 Vol. 125; ISSN 2169-8953
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English

References (65)

Comprehensive ecosystem model-data synthesis using multiple data sets at two temperate forest free-air CO 2 enrichment experiments: Model performance at ambient CO 2 concentration : FACE MODEL-DATA SYNTHESIS journal May 2014
Sensitivity of decomposition rates of soil organic matter with respect to simultaneous changes in temperature and moisture journal February 2015
Spatial and seasonal variabilities of the stable carbon isotope composition of soil CO 2 concentration and flux in complex terrain : Variability of the δ journal September 2016
Simulating high-resolution soil moisture patterns in the Shale Hills watershed using a land surface hydrologic model: Simulating High-Resolution Soil Moisture Patterns journal August 2015
Landscape structure, groundwater dynamics, and soil water content influence soil respiration across riparian-hillslope transitions in the Tenderfoot Creek Experimental Forest, Montana journal October 2010
The BETHY/JSBACH Carbon Cycle Data Assimilation System: experiences and challenges: BETHY/JSBACH CCDAS journal October 2013
Pattern and Process in a Forested Ecosystem book January 1994
The CENTURY model book January 1996
Consequences of liming and gypsum top-dressing on nitrogen and carbon dynamics in acid forest soils with different humus forms journal June 1995
Reconciling Carbon-cycle Concepts, Terminology, and Methods journal November 2006
Analyzing the carbon dynamics of central European forests: comparison of Biome-BGC simulations with measurements journal April 2006
Sensitivity of carbon cycling in the European Alps to changes of climate and land cover journal March 2007
Variation in carbon stocks on different slope aspects in seven major forest types of temperate region of Garhwal Himalaya, India journal September 2011
Simulating trends in soil organic carbon in long-term experiments using the century model journal December 1997
Cold air drainage in a forested valley: Investigating the feasibility of monitoring ecosystem metabolism journal August 2007
Modeling soil respiration based on carbon, nitrogen, and root mass across diverse Great Lake forests journal October 2009
Eddy covariance measurements with a new fast-response, enclosed-path analyzer: Spectral characteristics and cross-system comparisons journal November 2013
Ecosystem model spin-up: Estimating steady state conditions in a coupled terrestrial carbon and nitrogen cycle model journal November 2005
SEIB–DGVM: A new Dynamic Global Vegetation Model using a spatially explicit individual-based approach journal January 2007
Application of BIOME-BGC to simulate Mediterranean forest processes journal August 2007
Lessons learned from applying a forest gap model to understand ecosystem and carbon dynamics of complex tropical forests journal April 2016
Using a spatially-distributed hydrologic biogeochemistry model with a nitrogen transport module to study the spatial variation of carbon processes in a Critical Zone Observatory journal July 2018
Application of BIOME-BGC model to managed forests journal December 2006
Soil moisture patterns in a forested catchment: A hydropedological perspective journal April 2006
Combined soil-terrain stratification for characterizing catchment-scale soil moisture variation journal January 2017
Carbon sequestration studied in western U.S. mountains journal January 2002
Mechanistic scaling of ecosystem function and dynamics in space and time: Ecosystem Demography model version 2 journal January 2009
Landscape structure control on soil CO 2 efflux variability in complex terrain: Scaling from point observations to watershed scale fluxes : LANDSCAPE CONTROLS SOIL CO journal May 2009
Nitrogen Budget and Topographic Controls on Nitrous Oxide in a Shale-Based Watershed journal June 2018
A distributed hydrology-vegetation model for complex terrain journal June 1994
A Statistical Exploration of the Relationships of Soil Moisture Characteristics to the Physical Properties of Soils journal June 1984
Forest response to elevated CO2 is conserved across a broad range of productivity journal December 2005
Kriging: a method of interpolation for geographical information systems journal July 1990
Reimplementation of the Biome-BGC model to simulate successional change journal April 2005
Divergent phenological response to hydroclimate variability in forested mountain watersheds journal March 2014
Predictability of the terrestrial carbon cycle journal December 2014
Vegetation demographics in Earth System Models: A review of progress and priorities journal October 2017
On the separation of net ecosystem exchange into assimilation and ecosystem respiration: review and improved algorithm journal September 2005
Aboveground Forest Biomass and the Global Carbon Balance journal June 2005
Addressing the influence of instrument surface heat exchange on the measurements of CO 2 flux from open-path gas analyzers journal August 2008
The changing global carbon cycle: linking plant-soil carbon dynamics to global consequences journal September 2009
Simple scaling of photosynthesis from leaves to canopies without the errors of big-leaf models journal May 1997
Soil Moisture and the Ecology of soil Fungi journal May 1963
Does a General Temperature-Dependent Q10 Model of Soil Respiration Exist at Biome and Global Scale? journal November 2005
Evaluation of 11 terrestrial carbon-nitrogen cycle models against observations from two temperate Free-Air CO 2 Enrichment studies journal January 2014
Where does the carbon go? A model-data intercomparison of vegetation carbon allocation and turnover processes at two temperate forest free-air CO 2 enrichment sites journal May 2014
On improving the communication between models and data: Communication between models and data journal January 2013
Terrestrial Gross Carbon Dioxide Uptake: Global Distribution and Covariation with Climate journal July 2010
Variability in aboveground carbon driven by slope aspect and curvature in an eastern deciduous forest, USA journal February 2017
A Comparison of Three Gap Filling Techniques for Eddy Covariance Net Carbon Fluxes in Short Vegetation Ecosystems journal January 2015
Development of a Coupled Land Surface Hydrologic Model and Evaluation at a Critical Zone Observatory journal October 2013
A Method for Scaling Vegetation Dynamics: the Ecosystem Demography Model (ed) journal November 2001
Regional Biospheric Carbon Fluxes as Inferred from Atmospheric co 2 Measurements journal December 2000
A Closed-form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils1 journal January 1980
Temporal Stability of Soil Moisture Spatial Pattern and Subsurface Preferential Flow Pathways in the Shale Hills Catchment journal January 2006
Hot Spots and Hot Moments of Dissolved Organic Carbon Export and Soil Organic Carbon Storage in the Shale Hills Catchment journal January 2011
Susquehanna Shale Hills Critical Zone Observatory: Shale Hills in the Context of Shaver's Creek Watershed journal January 2018
Modelling the carbon budget of intensive forest monitoring sites in Germany using the simulation model BIOME-BGC journal January 2009
Implications of incorporating N cycling and N limitations on primary production in an individual-based dynamic vegetation model journal January 2014
An observational constraint on stomatal function in forests: evaluating coupled carbon and water vapor exchange with carbon isotopes in the Community Land Model (CLM4.5) journal January 2016
Recent global CO 2 flux inferred from atmospheric CO 2 observations and its regional analyses journal January 2011
The global carbon budget 1959–2011 journal January 2013
Designing a suite of measurements to understand the critical zone journal January 2016
Analysing Amazonian forest productivity using a new individual and trait-based model (TFS v.1) journal January 2014
Linking hydraulic traits to tropical forest function in a size-structured and trait-driven model (TFS v.1-Hydro) journal January 2016