Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Rapalee, G.; Trumbore, S.; Davidson, E.; Harden, J.; Veldhuis, H. (1998)
Publisher: eScholarship, University of California
Languages: English
Types: Article
Subjects: fire management, Canada, carbon sink, boreal forest, soil carbon, carbon sequestration, Bryophyta, Physical Sciences and Mathematics, decomposition, climate change
Boreal forests and wetlands are thought to be significant carbon sinks, and they could become net C sources as the Earth warms. Most of the C of boreal forest ecosystems is stored in the moss layer and in the soil. The objective of this study was to estimate soil C stocks (including moss layers) and rates of accumulation and loss for a 733 km(2) area of the BOReal Ecosystem-Atmosphere Study site in northern Manitoba, using data from smaller-scale intensive field studies. A simple process-based model developed from measurements of soil C inventories and radiocarbon was used to relate soil C storage and dynamics to soil drainage and forest stand age. Soil C stocks covary with soil drainage class, with the largest C stocks occurring in poorly drained sites. Estimated rates of soil C accumulation or loss are sensitive to the estimated decomposition constants for the large pool of deep soil C, and improved understanding of deep soil C decomposition is needed. While the upper moss layers regrow and accumulate C after fires, the deep C dynamics vary across the landscape, from a small net sink to a significant source. Estimated net soil C accumulation, averaged for the entire 733 km(2) area, was 20 g C m(-2) yr(-1) (28 g C m(-2) yr(-1) accumulation in surface mosses offset by 8 g C m(-2) yr(-1) lost from deep C pools) in a year with no fire. Most of the C accumulated in poorly and very poorly drained soils (peatlands and wetlands). Burning of the moss layer in only 1% of uplands would offset the C stored in the remaining 99% of the area. Significant interannual variability in C storage is expected because of the irregular occurrence of fire in space and time. The effects of climate change and management on fire frequency and on decomposition of immense deep soil C stocks are key to understanding future C budgets in boreal forests.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 120 AcknowledgementsT.hismaterialis basedonworksupportedby
    • NASA underprimegrantNAG5-2306,The Regentsof theUniversity
    • G. R. acknowledgeasdditionaslupportfromNASA undergrantNAG5-
    • 31752. S. E. T. acknowledgesadditionalsupportfrom the A. W.
    • andusingthe treecoredatafromthebiometricsurvey.The Canadian responsetso climatewarming,Ecol.Appl., 1 (2), 182-195,1991.
    • compilingourforeststandagemap. Dave Knappof theBOREAS staff thaw, Science,279, 214-217, 1998.
    • generatedandmadeavailablea griddedversionof the siteclassdata Hall, F. and D. Knapp,BOREAS TE-18 LandsatTM maximum
    • aboutmodeling. We also thanktwo anonymousreviewerswhose Oak Ridge,Tenn.,1998.
    • commentsgreatlyimprovedthismanuscript. Halliwell, D. andM. J. Apps,BOREASbiometryandauxiliarysites: Locationasnddescriptionsv,ersion2.0, Can.For. Serv.,Northwest Reg.,North. For. Cent.,EdmontonA,lberta,1995.
    • References Halliwell, D. andM. J. Apps,BOREASbiometryandauxiliarysites: Overstor&y understordyata,version2, Can.For.Serv.,Northwest Reg.,North. For. Cent.,EdmontonA,lberta,1996. Harden, J. W., E. T. SundquistR,. F. Stallard,and R. K. Mark, Dynamicsof soilcarbonduringdeglaciationof theLaurentideice sheet,Science,258, 1921- 1924, 1992. Harden, J. W., K. P. O'Neill, S. E. Trumbore, H. Veldhuis, and B. J. Stocks, Moss and soil contributionsto the annualnet carbon
    • Clymo,R.S.,Thelimitstopeatgrowth,Philos.Trans.R. Soc.London, Ser. B, 303, 605-654, 1984.
    • Curtis,R. O. andB. W. Post,Estimatingbulkdensityfromorganic mattercontenitn someVermontforestsoils,SoilSci.Soc.ofAm. Proc., 28, 285-286, 1964.
    • DavidsonE,. A.,Spatiaclovariatioonf soilorganiccarbonc, laycontent, and drainageclassat a regionalbasis,LandscapeEcol., 10 (6), 349-362, 1995.
    • DavidsonE,. A. andP. A. LefebvreE,stimatingregionaclarbonstocks and spatiallycovaryingedaphicfactorsusingsoilmapsat three scalesB,iogeochemistry2,2, 107-131, 1993.
    • Fries, T. L., J. W. Harden,T. G. HuntingtonS,. E. Trumbore,and P.M. Crill,PartitioninsgoilCO2 fluxbetweenshallowanddeep sourcesof organicmatter, paper presentedat Symposiumon ControlosnSoilRespiratio nIm:plicationfsorClimateChangeS,oil Sci. Soc. of Am., Anaheim, Calif., Oct. 1997.
    • Frolking,S., Sensitivityof spruce/mosbsorealforestnetecosystem productivityoseasonalnomolieisn weather,J. GeophysR.es.,102 (D24), 29,053-29,064, 1997.
    • FrolkingS, .,et al., Modelingtemporavlariabilityinthecarbonbalance of a spruce/mosbsorealforest,GlobalChangeBiol.,2, 343-366, 1996.
    • AgricultureCanadaExpertCommitteeon Soil Survey(Eds.),The Canadiasnystemofsoilclassificatio2nn,deditionA,gric.Can.Publ. 1646,164pp.,Res.BranchA,gric.Can.,Ottawa,Ontario,1987.
    • AlexandeEr,. B.,Bulkdensiteyquationfsor southerAnlaskasoils,Can. J. Soil Sci., 69, 177-180, 1989.
    • Apps,M. J.,W. A. Kurz,R. J.LuxmooreL,. O. NilssonR,. A. Sedjo, r. acnllllCltL,. k.J. Simpson,andT. S. Vinson,Borealforestand tundra,WaterAir Soil Pollut., 70, 39-53, 1993.
    • Bonan,G. B., Physiologicaclontrolsof thecarbonbalanceof boreal forestecosystemsC,an.J. For. Res.,23 (7), 1453-1471,1993.
    • Ciais,P.,P. P. Tans,M. Trolier,J. W. C. White,andJ.R. FranceyA, largenorthehrnemispheCrOe2sinkindicatebdy13C/12oCfatmosphericCO2,Science2,69, 1098-1102,1995. flux of a maturingborealforest,J. GeophysR.es., 102 (D24), 28,805-28,816, 1997.
    • Huntington,T. G., C. E. JohnsonA,. H. JohnsonT, . G. Siccama,and D. F.RyanC,arbono,rganicmatter,andbulkdensityrelationshipins a forestedspodosolS, oil Sci.,148 (5), 380-386, 1989.
    • Jenny,H., S. Gessel,and F. T. Bingham,Comparativestudyof decompositiornatesof organicmatterin temperateandtropical regionsS,oilSci.,68, 419-432, 1949.
    • Kasischke,E. S., N. L. Christensena,ndB. J. Stocks,Fire, global Resour.Conserv.Serv.,7th ed.,WashingtonD,.C., 1996. warming,andthecarbonbalanceof borealforestsE,col.Appl.,5, Tans,P. P., I. Y. Fung,andT. Takahashi,Observationaclonstraintosn 437-451, 1995. theglobaal tmospherCicO2budgetS,cience2,47, 1431-1438,1990.
    • Knapp,D. andM. Tuinhoff,BOREASforestcoverdatalayersof the Trambore,S. E. andJ. W. Harden,Accumulation and turnover of carbon NSA inrasterformat,http://www-eosdis.ornl.goDv/i,strib.Active inorganicandmineralsoilsof theBOREASnorthernstudyarea,J. Arch.Cent.,Oak RidgeNatl. Lab., Oak Ridge,Tenn.,1998. Geophys.Res.,102 (D24), 28,817-28,830, 1997.
    • Kurz, W. A. andM. J. Apps,An analysisof futurecarbonbudgetsof Trumbore,S., J. Harden,E. Sundquista,ndS. K. Conrad,BOREAS Canadianborealforests,WaterAir Soil Pollut., 82, 321-331, 1995. TGB-12 Soil carbondata over the NSA data set, http://www-
    • Moore, T. R. andR. Knowles,Methaneemissionsfrom fen,bog,and eosdis.oml.govD/,istrib.ActiveArch.Cent.,Oak RidgeNatl. Lab., swamppeatlandsin QuebecB,iogeochemistry1,1, 45-61, 1990. Oak Ridge,Tenn.,1998.
    • Peng,C., M. J. Apps,D. T. Price,I. A. Nalder,andD. H. Halliwell, Veldhuis, H. andD. Knapp,BOREAS TE-20 NSA soillab dataset, SimulatingcarbondynamicsalongtheBorealForestTransecCtase http://www-eosdis.oml.gDovis/,trib.ActiveArch.Cent.,Oak Ridge Study(BFFCS) in centralCanada,1. Model testing,GlobalBio- Natl. Lab., Oak Ridge,Tenn.,1998a. geochemC.ycles,12, 381-392, 1998. VeldhuisH,. andD. Knapp,BOREAS TE-20 soilsdataovertheNSA-
    • Payette,S.,Fire asa controllingprocessintheNorthAmericanboreal MSA and tower sites in raster format data set, http://wwwforesti,nA SystemAsnalysisof theGlobalBorealForest,editedby eosdis.oml.govD/,istrib.ActiveArch.Cent.,Oak RidgeNatl. Lab., H. H. ShugartR,. Leemansa, ndG. B. Bonanp,p. 144-169,Cam- Oak Ridge,Tenn.,1998b. bridgeUniv.Press,New York, 1993. Winston,G. C., E. T. SundquistB, . B. Stephensa,ndS. E. Trumbore,
    • Rapalee, G., E. A. Davidson,J. W. Harden, S. E. Trombore, WinterCO2fluxesina borealforest,J. GeophysR. es.,102(D24), H. Veldhuisa,ndD. Knapp,BOREASTGB-12 soilcarbonandflux 28,795-28,804, 1997. data of NSA-MSA in raster format data set, http://wwweosdis.oml.goDv/i,strib.ActiveArch.Cent.,OakRidgeNatl.Lab., Oak Ridge,Tenn.,1998. E. A. Davidson,The Woods Hole ResearchCenter,P.O. Box 296,
    • ReeburghW,. S., Figuressummarizintghe globalcyclesof biogeo- WoodsHole,MA 02543. (e-mail:) chemicallyimportanetlementsB,ull. Ecol.Soc.Am., 78, 260-268, J. W. Harden,U.S. GeologicalSurvey,MS 962, MenloPark,CA 1997. 94025. (e-mail:)
    • RubecC, . D. A. (Ed.) Wetlandsof Canada,EcologicaLlandClassifi- G. RapaleeG,oddardSpaceFlightCenter,Code923, GreenbeltM,D cation Series,No. 24, SustainablDeevelopmenBtranch,Environ- 20771. (e-mail:) mentCanada, Ottawa, Ontario, 1988. S.E.TramboreD,epartmenotf EarthSystemScienceU,niversityof
    • Sellers, P. J., et al. (Eds.), Experiment plan, BOReal California-kvineI,rvine,CA 92717. (e-mail:) Ecosystem-AtmospheSretudy, version3.0, NASA BOREAS H. VeldhuisA, gricultureandAgri-FoodCanada,BrandonResearch Report,GoddardSpaceFlightCent.,Code923, GreenbeltM,d., Centre,ManitobaLand ResourceUnit, Universityof Manitoba, 1994. Winnipeg, Manitoba, Canada R3T 2N2. (e-mail: VeldhuisH@
    • SoilSurveyStaff,SoiltaxonomyA: basicsystemof soilclassification em.agr.ca) for makingandinterpretinsgoilsurveysA,gric.Handb.436, U.S. Dep.of Agric.,SoilConservS.erv.,WashingtonD,.C., 1975. (ReceivedFebruary13, 1998;revisedJuly1, 1998;
    • Soil SurveyStaff,Keysto Soil TaxonomyU,.S. Dep. of Agric.,Nat. acceptedJuly 14, 1998.)
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article