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Thum, T.; Aalto, T.; Laurila, T.; Aurela, M.; Hatakka, J.; Lindroth, A.; Vesala, T. (2011)
Publisher: Tellus B
Journal: Tellus B
Languages: English
Types: Article
We studied the commencement and finishing of the growing season using different air temperature indices, the surface albedo, the chlorophyll fluorescence (Fv/Fm) and the carbon dioxide (CO2) tropospheric concentration, together with eddy covariance measurements of CO2 flux. We used CO2 flux data from four boreal coniferous forest sites covering a wide latitudinal range, and CO2 concentration measurements from Sammaltunturi in Pallas. The CO2 gas exchange was taken as the primary determinant for the growing season to which other methods were compared. Indices based on the cumulative temperature sum and the variation in daily mean temperature were successfully used for approximating the start and cessation of the growing season. The beginning of snow melt was a successful predictor of the onset of the growing season. The chlorophyll fluorescence parameter Fv/Fm and the CO2 concentration were good indicators of both the commencement and cessation of the growing season. By a derivative estimation method for the CO2 concentration, we were also able to capture the larger-scale spring recovery. The trends of the CO2 concentration and temperature indices at Pallas/Sammaltunturi were studied over an 11-yr time period, and a significant tendency towards an earlier spring was observed. This tendency was not observed at the other sites.DOI: 10.1111/j.1600-0889.2009.00441.x
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    • Aalto, T., Hatakka, J., Paatero, J., Tuovinen, J.-P., Aurela, M., and coauthors. 2002. Tropospheric carbon dioxide concentrations at a nothern boreal site in Finland: basic variations and source areas. Tellus 54B, 110-126.
    • Ananyev, G., Kolber, Z. S., Klimov, D., Falkowski, P. G., Berry, J. S. and co-authors. 2005. Remote sensing of heterogeneity in photosynthetic efficiency, electron transport and dissipation of excess light in Populus deltoids stands under ambient and elevated CO2 concentrations, and in a tropical forest canopy, using a new laser-induced fluorescence transient device. Global Change Biol. 11, 1195-1206.
    • Arneth, A., Lloyd, J., Shibistova, O., Sogachev, A. and Kolle, O. 2006. Spring in the boreal environment: observations on pre- and post-melt energy and CO2 fluxes in two central Siberian ecosystems. Boreal Environ. Res. 11, 311-328.
    • Aurela, M. 2005. Carbon dioxide exchange in subarctic ecosystems measured by a micrometeorological technique. Contributions 51, Finnish Meteorological Institute, Helsinki, Finland, 132 pp.
    • Baker, N. R. 2008. Chlorophyll fluorescence: a probe of photosynthesis in vivo. Annu. Rev. Plant Biol. 59, 89-113.
    • Baldocchi, D., 2003. Assessing the eddy covariance technique for evaluating carbon dioxide exchange rates of ecosystems: past, present and future. Global Change Biol. 9, 479-492.
    • Bartsch, A., Kidd, R. A., Wagner, W. and Bartalis. Z. 2007. Temporal and spatial variability of the beginning and end of daily spring freeze/thaw cycles derived from scatterometer data. Remote Sens. Environ. 106, 360-374.
    • Bergh, J. and Linder, S. 1999. Effects of soil warming during spring on photosynthetic recovery in boreal Norway spruce stands. Global Change Biol. 5, 245-253.
    • Busch, F., Hu¨ner, N. P. A. and Ensminger, I. 2007. Increased air temperature during simulated autumn conditions does not increase photosynthetic carbon gain but affects the dissipation of excess energy in seedlings of the evergreen conifer Jack pine. Plant Physiol. 143, 1242-1251.
    • Churkina, G., Schimel, D., Braswell, B. H. and Xiao, X. 2005. Spatial analysis of growing season length control over net ecosystem exchange. Global Change Biol. 11, 1777-1787.
    • Denning, S., Nicholls, M., Prihodko, L., Baker, I., Vidale, P.-L. and coauthors. 2003. Simulated variations in atmospheric CO2 over a Wisconsin forest using a coupled ecosystem-atmosphere model. Global Change Biol. 9, 1241-1250.
    • Dunn, A. L., Barford, C. C., Wofsy, S. C., Goulden, M. L. and Daube, B. C. 2007. A long-term record of carbon exchange on a boreal black spruce forest: means, responses to interannual variability and decadal trends. Global Change Biol. 13, 577-590.
    • Eneroth, K., Aalto, T., Hatakka, J., Holme´n, K., Laurila, T. and co-authors. 2005. Atmospheric transport of carbon dioxide to a baseline monitoring station in northern Finland. Tellus 57B, 366- 374.
    • Ensminger, I., Sveshnikov, D., Campbell, D. A., Funk, C., Jansson, S. and co-authors. 2004. Intermittent low temperatures constrain spring recovery of photosynthesis in boreal Scots pine forests. Global Change Biol. 10, 995-1008.
    • Ensminger, I., Schmidt, L. and Lloyd, J. 2008. Soil temperature and intermittent frost modulate the rate of recovery of photosynthesis in Scots pine under simulated spring conditions. New Phytol. 177, 428- 442.
    • Evain, S., Flexas, J. and Moya, I. 2004. A new instrument for passive remote sensing: 2. Measurements of leaf and canopy reflectance at 531 nm and their relationship with photosynthesis and chlorophyll fluorescence. Remote Sens. Environ. 91, 175-184.
    • Falge, E., Baldocchi, D., Tenhunen, J., Aubinet, M., Bakwin, P. and coauthors. 2002. Seasonality of ecosystem respiration and gross primary production as derived from FLUXNET measurements. Agric. Forest Meteorol. 113, 53-74.
    • Finnish Meteorological Institute. 1991. Climatological Statistics in Finland 1961-1990. Supplement to the Meteorological Yearbook of Finland. The Finnish Meteorological Institute, Helsinki, Finland.
    • Flexas, J., Escalona, J. M., Evain, S., Gulias, J., Moya, I. and co-authors. 2002. Steady-state chlorophyll fluorescence (Fs) measurements as a tool to follow variations of net CO2 assimilation and stomatal conductance during water-stress in C3 plants. Physiologia Plantarum 114, 231-240.
    • Grelle, A., Lindroth, A. and Mo¨ lder, M. 1999. Seasonal variation of boreal forest surface conductance and evaporation. Agric. Forest Meteorol. 98-99, 563-578.
    • Gloor, M., Bakwin, P., Hurst, D., Lock, L., Draxler, R. and co-authors. 2001. What is the concentration footprint of a tall tower? J. Geophys. Res. 106, 17831-17840.
    • Gu, L., Hanson, P. J., Post, W. M., Kaiser, D. P., Yang, B. and co-authors. 2008. The 2007 eastern US spring freeze: increased cold damage in a warming world? BioScience 58, 253-262.
    • Ha¨nninen, H. and Kramer, K. 2007. A framework for modelling the annual cycle of trees in boreal and temperate regions. Silva Fenn. 41, 167-205.
    • Hatakka, J., Aalto, T., Aaltonen, V., Aurela, M., Hakola, H. and coauthors. 2003. Overview of atmospheric research activities and results at Pallas GAW station. Boreal Environ. Res. 8, 365-384.
    • Higuchi, K., Worthy, D., Chan, D. and Shaskov, A. 2003. Regional source/sink impact on the diurnal, seasonal and inter-annual variations in atmospheric CO2 at a boreal forest site in Canada. Tellus 55B, 115- 125.
    • Holdridge, L. R. 1967. Lize zone Ecology. Tropical Science Center, San Jose´.
    • Jo¨ nsson, A. M., Linderson, M.-J., Stjernquist, I., Schlyter, P. and Ba¨rring, L. 2004. Climate change and the effect of temperature backlashes causing frost damage in Picea abies. Global Planet. Change 44, 195- 207.
    • Keeling, C. D., Chin, J. F. S. and Whorf, T. P. 1996. Increased activity of northern vegetation inferred from atmospheric CO2 measurements. Nature 382, 146-149.
    • Kimball, J. S., McDonald, K. C., Running, S. W. and Frolking, S. E. 2004. Satellite radar remote sensing of seasonal growing seasons for boreal and subalpine evergreen forests. Remote Sens. Environ. 90, 243-258.
    • Kolari, P., Lappalainen, H. K., Ha¨nninen, H. and Hari, P. 2007. Relationship between temperature and the seasonal course of photosynthesis in Scots pine at northern timberline and in southern boreal zone. Tellus 59B, 542-552.
    • Lagergren, F., Eklundh, L., Grelle, A., Lundblad, M., Mo¨ lder, M. and co-authors. 2005. Net primary production and light use efficiency in a mixed coniferous forest in Sweden. Plant Cell Environ. 28, 412-423.
    • Lagergren, F., Lindroth, A., Dellwik, E., Ibrom, A., Lankreijer, H. and co-authors. 2008. Biophysical controls on CO2 fluxes of three northern forests based on long-term eddy covariance data. Tellus 60B, 143-152.
    • Leinonen, I. and Kramer, K. 2002. Applications of phonological models to predict the future carbon sequestration potential of boreal forests. Climatic Chance 5, 99-113.
    • Leinonen, I., Repo, T. and Ha¨nninen, H. 1997. Changing environmental effects on frost hardiness of Scots pine during dehardening. Ann. Bot-London 79, 133-137.
    • Linkosalo, T., Ha¨kkinen, R., Terhivuo, J., Tuomenvirta, H. and Hari, P. 2008. The time series of flowering and leaf bud burst of boreal trees (1846-2005) support the direct temperature observations of climatic warming. Agric. Forest. Meteorol. 149, 453- 461.
    • Louis, J., Ounis, A., Ducruet, J.-M., Evain, S., Laurila, T. and co-authors. 2005. Remote sensing of sunlight-induced chlorophyll fluorescence and reflectance of Scots pine in the boreal forest during spring recovery. Remote Sens. Environ. 96, 37-48.
    • Ma¨kela¨, A., Hari, P., Berninger, F., Ha¨nninen, H. and Nikinmaa, E. 2004. Acclimation of photosynthetic capacity in Scots pine to the annual cycle of temperature. Tree Phys. 24, 369-376.
    • Ma¨kela¨, A., Kolari, P., Karima¨ki, J., Nikinmaa, E., Pera¨ma¨ki, M. and co-authors. 2006. Modelling five years of weather-driven variation of GPP in a boreal forest. Agric. Forest Meteorol. 139, 382-398.
    • Markkanen, T., Rannik, U¨., Keronen, P., Suni, T. and Vesala, T. 2001. Eddy covariance fluxes over a boreal Scots pine forest. Boreal Environ. Res. 6, 65-78.
    • Maxwell, K. and Johnson, G. N. 2000. Chlorophyll fluorescence - a practical guide. J. Exp. Bot. 61, 659-668.
    • Meroni, M. and Colombo, R. 2006. Leaf level detection of solar induced chlorophyll fluoresence by means of a subnanometer resolution spectroradiometer. Remote Sens. Environ. 103, 438-448.
    • Moncrieff, J., Clement, R., Finnigan, J. and Meyers, T. 2004. Averaging, detrending and filtering eddy covariance time series. In: Handbook of Micrometeorology: A Guide for Surface Flux Measurements (eds X. Lee, W. Massman and B. Law). Kluwer Academic Press, Dordrecht, The Netherlands, 7-31.
    • Monson, R. K., Sparks, J. P., Rosenstiel, T. N., Scott-Denton, L. E., Huxman, T. E. and co-authors. 2005. Climatic influences on net ecosystem CO2 exchange during the transition from wintertime carbon source to springtime carbon sink in a high-elevation, subalpine forest. Oecologia 146, 130-147.
    • Moya, I., Camenenb, L., Evain, S., Goulas, Y., Cerovic, Z. G. and coauthors. 2004. A new instrument for passive remote sensing: 1. Measurements of sunlight-induced chlorophyll fluorescence. Remote Sens. Environ. 91, 186-197.
    • Murayama, S., Higuchi, K. and Taguchi, S. 2007. Influence of atmospheric transport on the inter-annual variation of the CO2 seasonal cycle downward zero-crossing. Geophys. Res. Lett. 34, L04811, doi:10.1029/2006GL028389.
    • Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC). 2006. MODIS subsetted land products, Collection 4. Available on-line [http://www.daac.ornl.gov/MODIS/modis.html] from ORNL DAAC, Oak Ridge, Tennessee, U.S.A. Accessed March 17, 2008.
    • O¨ gren, E. 2001. Effects of climatic warming on cold hardiness of some northern woody plants assessed from simulation experiments. Physiol. Plantarum 112, 71-77.
    • Pelkonen, P. and Hari, P. 1980. The dependence of the springtime recovery of CO2 uptake in Scots pine on temperature and internal factors. Flora 169, 398-404.
    • Piao, S., Ciais, P., Friedlingstein, P., Peylin, P., Reichstein, M. and coauthors. 2008. Net carbon dioxide losses of northern ecosystems in response to autumn warming. Nature 451, 49-52.
    • Randerson, J. T., Field, C. B., Fung, I. Y. and Tans, P. P. 1999. Increases in early season ecosystem uptake explain the recent changes in the seasonal cycle of atmospheric CO2 at high northern latitudes. Geophys. Res. Lett. 26, 2765-2768.
    • Repo, T., Ha¨nninen, H. and Kelloma¨ki, S. 1996. The effects of long-term elevation of air temperature and CO2 on the frost hardiness of Scots pine. Plant Cell Environ. 19, 209-216.
    • Rosema, A., Snel, J. F. H., Zahn, H., Buurmeijer, W. F. and Van Hode, L. W. A. 1998. The relation between laser-induced chlorophyll fluorescence and photosynthesis. Remote Sens. Environ. 65, 143-154.
    • Schleip, C., Menzel, A. and Dose, V. 2008. Norway spruce (Picea abies): Bayesian analysis of the relationship between temperature and bud burst. Agric. Forest Meteorol. 148, 631-643.
    • Solantie, R. 2004. Daytime temperature sum-a new thermal variable describing growing season characteristics and explaining evapotranspiration. Boreal Environ. Res. 9, 319-333.
    • Solantie, R. 2005. Productivity of boreal forests in relation to climate and vegetation zones. Boreal Environ. Res. 10, 275-297.
    • Suni, T., Berninger, F., Markkanen, T., Keronen, P., Rannik, U¨. and co-authors. 2003. Interannual variability and timing of growingseason CO2 exchange in a boreal forest. J. Geophys. Res. 108, 4265, doi:10.1029/2002JD002381.
    • Tanja, S., Berninger, F., Vesala, T., Markkanen, T., Hari, P. and coauthors. 2003. Air temperature triggers the recovery of evergreen boreal forest photosynthesis in spring. Global Change Biol. 9, 1410- 1426.
    • Taylor, G., Tallis, M. J., Giardina, C. R., Percy, K. E., Miglietta, F. and co-authors. 2008. Future atmospheric CO2 leads to delayed autumnal senescence. Global Change Biol. 14, 264-275.
    • Thoning, K. W., Tans, P. P. and Komhyr, W. D. 1989. Atmospheric carbon dioxide at Mauna Loa Observatory 2. Analysis of the NOAA GMCC data, 1974-1985. J. Geophys. Res. 94, 8549-8565.
    • Thum, T., Aalto, T., Laurila, T., Aurela, M., Lindroth, A. and co-authors. 2008. Assessing seasonality of biochemical CO2 exchange model parameters from micrometeorological flux observations at boreal coniferous forest. Biogeosciences 5, 1625-1639.
    • Trenberth, K. E., Jones, P. D., Ambenje, P., Bojariu, R., Easterling, D. and co-authors. 2007. Observations: surface and atmospheric climate change. In: Climatic Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (eds S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, and co-editors). Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.
    • Tuomenvirta, H., Alexandersson, H., Drebs, A., Frich, P. and Nordli, P. O. 2000. Trends in nordic and arctic temperature extremes and ranges. J. Clim. 13, 977-990.
    • Ueyama, M., Harazono, Y. and Ohtaki, E. 2006. Controlling factors on the interannual CO2 budget at subarctic black spruce forest in interior Alaska. Tellus 58B, 491-501.
    • Vena¨la¨inen, A. and Nordlund, A. 1988. Kasvukauden ilmastotiedotteen sisa¨lto¨ ja ka¨ytto¨ (Contents and use of the climatological report of a growing season, in Finnish). Finnish Meteorological Institute Reports 1988:6, Finnish Meteorological Institute, Helsinki, 63 pp.
    • Vesala, T., Haataja, J., Aalto, P., Altimir, N., Buzorius, G. and co-authors. 1998. Long-term field measurements of atmosphere-surface interactions in boreal forest combining forest ecology, micrometeorology, aerosol physics and atmospheric chemistry. Trends Heat, Mass Moment. Transfer 4, 17-35.
    • Vesala, T., Suni, T., Rannik, U¨., Keronen, P., Markkanen, T. and coauthors. 2005. Effect of thinning on surface fluxes in a boreal forest. Global Biogeochem. Cyc. 19, doi:10.1029/2004GB002316.
    • Welp, L. R., Randerson, J. T. and Liu, H. P. 2007. The sensitivity of carbon fluxes to spring warming and summer drought depends on plant functional type in boreal forest ecosystems. Agric. Forest Meteorol. 147, 172-185.
    • Woldendorp, G., Hill, M. J., Doran, R. and Ball, M. C. 2008. Frost in future climate: modelling interactive effects of warmer temperatures and rising atmospheric [CO2] on the incidence and severity of frost damage in a temperate evergreen (Eucalyptus pauciflora). Global Change Biol. 14, 294-308.
    • Yuan, F., Arain, A., Barr, A. G., Black, A., Bourque, C. P.-A. and co-authors. 2008. Modeling analysis of primary controls on net ecosystem productivity of seven boreal and temperate coniferous forests across a continental transect. Global Change Biol. 14, 1765- 1784.
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