Plant and Soil

, Volume 338, Issue 1–2, pp 193–203 | Cite as

Feedback from soil inorganic nitrogen on soil organic matter mineralisation and growth in a boreal forest ecosystem

Regular Article


Current nitrogen (N) deposition rates are considerably higher than during pre-industrial times and the growing interest in forest fertilisation requires better understanding of how the N and carbon (C) cycles interact. This study is based on experimental data showing how Scots pine (Pinus sylvestris L.) forests respond to single or consecutive pulse doses of N. The data were used to support the implementation of a dynamic feedback mechanism in the Q model, allowing for changes in soil N availability to regulate the rate of decomposer efficiency. Simulations of the long-term effects of slowly increasing N deposition with and without dynamic decomposer efficiency were then compared. Both versions of the model accurately predicted the response of tree growth to N fertilisation. Slowly increasing inputs of N over a century in the modified version acted on the inputs and outputs of soil C in opposing ways: (a) rate of litter input slowed down because more N was retained in the soil and thus not available for tree growth; (b) rate of C output, through soil heterotrophic respiration, was also gradually reduced due to increasing decomposer efficiency, although not enough to sufficiently balance the reduced litter input. Accurate prediction of the amount of added N retained in the ecosystem seems to be one of the key issues for estimating enhanced C sequestration.


Carbon sequestration Decomposer efficiency Fertilisation Nitrogen cycle Soil organic matter Feedback 


  1. Aber JD, Nadelhoffer KD, Steudler PA, Mellilo JM (1989) Nitrogen saturation in northern forest ecosystems. Bioscience 39:378–386CrossRefGoogle Scholar
  2. Aber JD, Melillo JM, Nadelhoffer KJ, Pastor J, Boone RD (1997) Factors controlling nitrogen cycling and nitrogen saturation in northern temperate forest ecosystems. Ecol Appl 1:303–315CrossRefGoogle Scholar
  3. Aerts R (1996) Nutrient resorption from senescing leaves of perennials: Are there general patterns? J Ecol 84:597–608CrossRefGoogle Scholar
  4. Aerts R, Chapin FS III (2000) The mineral nutrition of wild plants revisited: a re-evaluation of processes and patterns. Adv Ecol Res 30:1–67CrossRefGoogle Scholar
  5. Ågren GI (1983) Nitrogen productivity of some conifers. Can J For Res 13:494–500CrossRefGoogle Scholar
  6. Ågren GI (1985) Theory for growth of plants derived from the nitrogen productivity concept. Physiol Plant 64:17–28CrossRefGoogle Scholar
  7. Ågren GI, Bosatta E (1988) Nitrogen saturation of terrestrial ecosystems. Environ Pollut 54:185–197CrossRefPubMedGoogle Scholar
  8. Ågren GI, Bosatta E, Magill AH (2001) Combining theory and experiment to understand effects of inorganic nitrogen on litter decomposition. Oecologia 128:94–98CrossRefGoogle Scholar
  9. Ågren GI, Hyvönen R, Nilsson T (2007) Are Swedish forest soils sinks or sources for CO2—model analyses based on forest inventory data. Biogeochemistry 82:217–227CrossRefGoogle Scholar
  10. Ågren GI, Chertov O, Kellomäki S, Komarov A, van Oijen M (2008) Description of the models applied in the Modelling Approach. In: Kahle H-P, Karjalainen T, Schuck A, Ågren GI, Kellomäki S, Mellert K, Prietzel J, Rehfuess K-E, Spiecker H (eds) Causes and consequences of forest growth trends in Europe—results of the RECOGNITION project. Brill, Lieden, pp 49–65Google Scholar
  11. Alexander IJ, Fairley RI (1983) Effects of N fertilization on populations of fine roots and mycorrhizas in spruce humus. Plant Soil 71:49–53CrossRefGoogle Scholar
  12. Amponsah IG, Comeau PG, Brockley RP, Lieffers VJ (2005) Effects of repeated fertilization on needle longevity, foliar nutrition, effective leaf area index, and growth characteristics of lodgepole pine in interior British Columbia, Canada. Can J For Res 35:440CrossRefGoogle Scholar
  13. Andrén O, Paustian K (1987) Barley straw decomposition in the field: a comparison of models. Ecology 68:1190–1200CrossRefGoogle Scholar
  14. Ångström A, Högberg L (1952) On the content of nitrogen in atmospheric precipitation in Sweden II. Tellus 4:272–279Google Scholar
  15. Asman WAH, Drukker B, Janssen AJ (1988) Modeled historical concentrations and depositions of ammonia and ammonium in Europe. Atmos Environ 22:725–735CrossRefGoogle Scholar
  16. Bergh J (1997) Climatic and Nutritional Constraints to Productivity in Norway Spruce. In Department for Production Ecology. Swedish University of Agricultural Sciences, Uppsala.Google Scholar
  17. Brix H (1983) Effects of thinning and nitrogen-fertilization on growth of douglas-fir—relative contribution of foliage quantity and efficiency. Can J For Res 13:167–175CrossRefGoogle Scholar
  18. Brockley RP (2005) Effects of post-thinning density and repeated fertilization on the growth and development of young lodgepole pine. Can J Forest Res 35:1952CrossRefGoogle Scholar
  19. Cannell MGR, Thornley JHM (2000) Nitrogen states in plant ecosystems: a viewpoint. Ann Bot 86:1095–8290CrossRefGoogle Scholar
  20. De Vries V, Solberg S, Dobbertin M, Sterba H, Laubhahn D, Reinds GJ, Nabuurs GJ, Gundersen P, Sutton MA (2008) Ecologically implausible carbon response? Nature 451:E1–E3. doi:10.1038/nature06579 CrossRefPubMedGoogle Scholar
  21. Eriksson T, Rytter L, Vapaavour E (1996) Physiology of carbon allocation in trees. Biomass Bioenergy 11:115–127CrossRefGoogle Scholar
  22. Fagerström T, Lohm U (1977) Growth in scots pine (Pinus Silvestris L.) mechanism of response to nitrogen. Oecologia 26:305–315CrossRefGoogle Scholar
  23. Flower-Ellis JGK, Brown CG, Woodger GH (1994) Vertical life-tables for Scots pine and Norway spruce needles form the forest limit in Swedish Lapland. Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences, UppsalaGoogle Scholar
  24. Fog K (1988) The effect of added nitrogen on the rate of decomposition of organic matter. Bilological Rev 63:433–462CrossRefGoogle Scholar
  25. Franklin O, Högberg P, Ekblad A, Ågren GI (2003) Pine forest floor carbon accumulation in response to N and PK additions: bomb C-14 modelling and respiration studies. Ecosystems 6:644–658CrossRefGoogle Scholar
  26. Galloway JN, Cowling EB (2002) Reactive nitrogen and the world: 200 years of change. Ambio 31:64–71PubMedGoogle Scholar
  27. Hägglund B (1981) Samband mellan ståndortsindex H100 och bonitet för tall och gran i Sverige. Umeå.Google Scholar
  28. Hägglund B, Lundmark J-E (1977) Site index estimation by means of site properties—Scots pine and Norway spruce in Sweden. In Studia Forestalia Suecia. Swedish College of Forestry, Stockholm, pp 463–480Google Scholar
  29. Hobbie SE (2005) Contrasting effects of substrate and fertilizer nitrogen on the early stages of litter decomposition. Ecosystems 8:644–656CrossRefGoogle Scholar
  30. Högberg P (2007) Nitrogen impacts on forest carbon. Nature 447:781–782CrossRefPubMedGoogle Scholar
  31. House JI, Prentice IC, Ramankutty N, Houghton RA, Heimann M (2003) Reconciling apparent inconsistencies in estimates of terrestrial CO2 sources and sinks. Tellus Ser B 55:345–363CrossRefGoogle Scholar
  32. Hyvönen R, Ågren GI, Linder S, Persson T, Cotrufo MF, Ekblad A, Freeman M, Grelle A, Janssens IA, Jarvis PG, Kellomäki S, Lindroth A, Loustau D, Lundmark T, Norby RJ, Oren R, Pilegaard K, Ryan MG, Sigurdsson BD, Strömgren M, van Oijen M, Wallin G (2007) The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems: a literature review. New Phytol 173:463–480CrossRefPubMedGoogle Scholar
  33. Hyvönen R, Persson T, Andersson S, Olsson B, Ågren GI, Linder S (2008) Impact of long-term nitrogen addition on carbon stocks in trees and soils in northern Europe. Biogeochemistry 89:121–137CrossRefGoogle Scholar
  34. Kahle H-P, Karjalainen T, Schuck A, Ågren GI, Kellomäki S, Mellert K, Prietzel J, Rehfuess K-E, Eds SH (2008) Causes and consequences of forest growth trends in Europe—results of the RECOGNITION project. Brill, Lieden, p 261Google Scholar
  35. Knorr W, Prentice IC, House JI, Holland EA (2005) Long-term sensitivity of soil carbon turnover to warming. Nature 433:298–301CrossRefPubMedGoogle Scholar
  36. Ladanai S, Ågren GI (2004) Temperature sensitivity of nitrogen productivity for Scots pine and Norway spruce. Trees 18:312–319Google Scholar
  37. Ladanai S, Ågren GI, Hyvönen R, Lundkvist H (2007) Nitrogen budgets for Scots pine and Norway spruce ecosystems 12 and 7 years after the end of long-term fertilisation. For Ecol Manage 238:130–140CrossRefGoogle Scholar
  38. Magnani F, Mencuccini M, Borghetti M, Berbigier P, Berninger F, Delzon S, Grelle A, Hari P, Jarvis PG, Kolari P, Kowalski AS, Lankreijer H, Law BE, Lindroth A, Loustau D, Manca G, Moncrieff JB, Rayment M, Tedeschi V, Valentini R, Grace J (2007) The human footprint in the carbon cycle of temperate and boreal forests. Nature 447:848–850CrossRefPubMedGoogle Scholar
  39. Manzoni S, Porporato A (2007) Theoretical analysis of nonlinearities and feedbacks in soil carbon and nitrogen cycles. Soil Biol Biochem 39:1542–1556CrossRefGoogle Scholar
  40. Matthews E (1994) Nitrogenous fertilizers: global distribution of consumption and associated emissions of nitrous oxide and ammonia. Glob Biogeochem Cycles 8:411–439CrossRefGoogle Scholar
  41. McGroddy ME, Daufresne T, Hedin LO (2004) Scaling of C: N: P stoichiometry in forests worldwide: Implications of terrestrial redfield-type ratios. Ecology 85:2390–2401CrossRefGoogle Scholar
  42. Nadelhoffer KJ, Emmett BA, Gundersen P, Kjonaas OJ, Koopmans CJ, Schleppi P, Tietema A, Wright RF (1999) Nitrogen deposition makes a minor contribution to carbon sequestration in temperate forests. Nature 398:145–148CrossRefGoogle Scholar
  43. Oleksyn J, Reich PB, Zytkowiak R, Karolewski P, Tjoelker MG (2003) Nutrient conservation increases with latitude of origin in European Pinus sylvestris populations. Oecologia 136:220–235CrossRefPubMedGoogle Scholar
  44. Pettersson F, Högbom L (2004) Long-term growth effects following forest nitrogen fertilization in Pinus sylvestris and Picea abies stands in Sweden. Scand J For Res 19:339–347CrossRefGoogle Scholar
  45. Post WM, Emanuel WR, Zinke PJ, Stangenberger AG (1982) Soil carbon pools and world life zones. Science 298:156–159Google Scholar
  46. Rolff C, Ågren GI (1999) Predicting effects of different harvesting intensities with a model of nitrogen limited forest growth. Ecol Modell 118:193–211CrossRefGoogle Scholar
  47. Russell JB, Cook GM (1995) Energetics of bacterial growth: balance of anabolic and catabolic reactions. Microbiol Rev 59:48–462PubMedGoogle Scholar
  48. Ryan MG, Hunt ER Jr, McMurtrie RE, Ågren GI, Aber JD, Friend AD, Rastetter EB, Pulliam WM, Raison JR, Linder S (1996) Comparing models of ecosystem function for temperate Conifer Forests. I. Model description and validation. In: Bredenmeyer D, Hall DO, Mellilo JM, Ågren GI (eds.) Global change: effects on coniferous forests and grasslands. John Whiley & Sons Ltd.Google Scholar
  49. Schimel JP, Weintraub MN (2003) The implications of exoenzyme activity on microbial carbon and nitrogen limitation in soil: a theoretical model. Soil Biol Biochem 35:549–563CrossRefGoogle Scholar
  50. Schimel DS, Enting IG, Heimann M, Wigley TML, Raynard D, Alves D, Siegenthaler U (1995) CO2 and the carbon cycle. In: Houghton JT, Filho LGM, Bruce J, Lee H, Callander BA, Haites E, Harris N, Maskell K (eds) Climate change 1994: radiative forcing of climate change. Cambridge University Press, Cambridge, pp 39–71Google Scholar
  51. Schlesinger WH (1977) Carbon balance in terrestrial detritus. Annu Rev Ecol Syst 8:51–81CrossRefGoogle Scholar
  52. Schlesinger WH (1997) Biogeochemistry, Academic Press.Google Scholar
  53. Smil V (1999) Detonator of the population explosion. Nature 400:415–415CrossRefGoogle Scholar
  54. Sutton MA, Simpson D, Levy PE, Smith RI, Reis S, van Oijen M, de Vries W (2008) Uncertainties in the relationship between atmospheric nitrogen deposition and forest carbon sequestration. Glob Change Biol 14:2057–2063CrossRefGoogle Scholar
  55. Tamm CO (1964) Determination of nutrient requirements of forest stands. Int Rev For Res 1:115–170Google Scholar
  56. Tamm CO (1991) Nitrogen in terrestrial ecosystems. Questions of productivity, vegetational changes, and ecosystem stability. Springer Verlag, Berlin, p 115Google Scholar
  57. Tamm CO, Aronsson A, Popovic B (1995) Nitrogen saturation in a long-term forest experiment with annual additions of nitrogen. Water Air Soil Pollut 85:1683–1688CrossRefGoogle Scholar
  58. Townsend AR, Braswell BH, Holland EA, Penner JE (1996) Spatial and temporal patterns in terrestrial carbon storage due to deposition of fossil fuel nitrogen. Ecol Appl 6:806–814CrossRefGoogle Scholar
  59. Vitousek M, Aber JD, Howarth RW, Likens GE, Matson PA, Schindler DW, Schlesinger WH, Tilman DG (1997) Human alteration of the global nitrogen cycle: sources and consequences. Ecol Appl 7:737–750Google Scholar

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© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Department of EcologySwedish University of Agricultural SciencesUppsalaSweden

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