Abstract
The carbon dioxide efflux to the atmosphere and the concentrations at various depths in two soils were measured, for more than a year, under pure stands of silver fir ( Abies alba Mill.) and European beech ( Fagus sylvatica L.) in central Italy. Microbial biomass and activity at the monitored depths were determined in the laboratory and the CO2 evolved from incubated samples was submitted to radiocarbon analysis to assess the mean residence time of the organic matter degraded by microorganisms. The CO2 efflux showed similar trends in the two soils, with highest values in October and lowest in January. The efflux depended more on air and soil temperatures than soil moisture, and was related to these variables better under fir than under beech. In both soils, the CO2 concentration increased with depth: in the top horizon it was low and similar to that of the atmosphere, while in the deeper horizons it often amounted to considerable values (up to more than 1% by volume in the BC horizon under fir). The subsoil of the fir stand generally showed much higher CO2 concentrations than that of the beech. The basal respiration as determined in the laboratory was at a maximum in the topsoil and decreased sharply downwards. Therefore, the high CO2 concentrations measured in the field at the bottom of the profiles—where roots were few, and microbial biomass and available C pool were at a minimum—appeared to be due more to slow diffusivity of the soil matrix rather than to heavy release of the gas by the biota. The organic matter respired by microorganisms in incubated soil samples showed positive values of Δ14C that revealed a recent synthesis. The estimated mean residence time increased with depth, suggesting a generally higher degree of stabilisation of the organic pool in the subsoil.
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References
Agnelli A, Trumbore SE, Corti G, Ugolini FC (2002) The dynamics of organic matter in rock fragments in soil investigated by 14C dating and measurements of 13C. Eur J Soil Sci 53:147–159
Amundson RG, Davidson EA (1990) Carbon dioxide and nitrogenous gases in the soil atmosphere. J Geochem Explor 38:13–41
Blake GR, Hartge KH (1986) Bulk density. In: Klute A (ed) Methods of Soil Analysis, 2nd edn. Part I: Physical and mineralogical methods. (Agronomy monograph no. 9) American Society of Agronomy and Soil Science Society of America, Madison, Wis., pp 363–375
Borken W, Xu YJ, Brumme R, Lamersdorf N (1999) A climate change scenario for carbon dioxide and dissolved organic carbon fluxes from a temperate forest soil: drought and rewetting effects. Soil Sci Soc Am J 63:1848–1855
Bowden RD, Nadelhoffer KJ, Boone RD, Melillo JM, Garrison JB (1993) Contributions of above-ground litter, below-ground litter, and root respiration to total soil respiration in a temperate mixed hardwood forest. Can J For Res 23:1402–1407
Bowden RD, Rullo G, Stevens GR, Steudler PA (2000) Soil fluxes of carbon dioxide, nitrous oxide, and methane at a productive temperate deciduous forest. J Environ Qual 29:268–276
Bridges EM, Batjes NH (1996) Soil gaseous emissions and global climatic change. Geography 81:155–169
Buchmann N (2000) Biotic and abiotic factors controlling soil respiration rates in Picea abies stands. Soil Biol Biochem 32:1625–1635
Casals P, Romanyà J, Cortina J, Bottner P, Coûteaux MM, Vallejo VR (2000) CO2 efflux from a Mediterranean semi-arid forest soil. I. Seasonality and effects of stoniness. Biogeochem 48:261–281
Crill PM (1991) Seasonal patterns of methane uptake and carbon dioxide release by a temperate woodland soil. Global Biogeochem Cycles 5:319–334
Davidson EA, Belk E, Boone RD (1998) Soil water content and temperature as independent or confounded factors controlling soil respiration in a temperate mixed hardwood forest. Global Change Biogeochem 4:217–227
Dörr H, Münnich KO (1980) Carbon-14 and carbon-13 in soil CO2. Radiocarbon 22:909–918
Dyer JM, Brook GA (1991) Spatial and temporal variations in temperate forest soil carbon dioxide during the non-growing season. Earth Surf Proc Land 16:411–426
Epron D, Farque L, Lucot E, Badot PM (1999) Soil CO2 efflux in a beech forest: dependence on soil temperature and soil water content. Ann For Sci 56:221–226
Fang C, Moncrieff JB (2001) The dependence of soil CO2 efflux on temperature. Soil Biol Biochem 33:155–165
FAO—Food and Agriculture Organization of the United Nations (1998) World Reference Base for Soil Resources. (FAO report no. 84) FAO, Rome
Gaudinski JB, Trumbore SE, Davidson EA, Zheng SH (2000) Soil carbon cycling in a temperate forest: radiocarbon based estimates of residence times, sequestration rates and partitioning of fluxes. Biogeochemistry 51:33–69
Hanson PJ, Wullschleger SD, Bohlman SA, Todd DE (1993) Seasonal and topographic patterns of forest floor CO2 efflux from an upland oak forest. Tree Physiol 13:1–15
IPCC—Intergovernmental Panel on Climate Change (1995) Second assessment on climate change. WMO, Geneva
Isermeyer H (1952) Eine einfache Methode zur Bestimmung der Bodenatmung und der Karbonate im Boden. Z Pflanzenernaehr Bodenkd 56:26–38
Jorgensen JR (1974) A simple apparatus for obtaining multiple soil atmosphere samples from a single bore hole. Soil Sci Soc Am Proc 38:540–541
Lessard R, Rochette P, Topp E, Pattey E, Desjardins RL, Beaumont G (1994) Methane and carbon dioxide fluxes from poorly drained adjacent cultivated and forest sites. Can J Soil Sci 74:139–146
Levin I, Hesshaimer V (2000) Radiocarbon—a unique tracer of global carbon cycle dynamics. Radiocarbon 42:69–80
Nannipieri P, Grego S, Ceccanti B (1990) Ecological significance of the biological activity in soil. In: Bollag J-M, Stotzky G (eds) Soil Biochemistry, vol. 6. Dekker, New York, pp 293–355
Raich JW, Nadelhoffer KJ (1989) Below ground carbon allocation in forest ecosystems: global trends. Ecology 70:1346–1354
Rout SK, Gupta SR (1989) Soil respiration in relation to abiotic factors, forest floor litter, root biomass and litter quality in forest ecosystems of Siwaliks in northern India. Acta Oecol 10:229–244
Schimel D (1996) Radiative forcing of climate change. In: Houghton JT, et al (eds) Climate Change 1995: the Science of Climate Change. Cambridge University Press, Cambridge, pp 65–131
Smagin AV (2000) The gas function of soils. Euras J Soil Sci 33:1061–1071
Soil Survey Staff (1999) Soil Taxonomy. A basic system of soil classification for making and interpreting soil surveys, 2nd edn. (Agriculture handbook no. 436). United States Department of Agriculture and Natural Resources Conservation Service, U.S. Government Printing Office, Washington, D.C.
Soil Survey Division Staff (1993) Soil Survey Manual. (United States Department of Agriculture handbook no. 18) Government Printing Office, Washington, D.C.
Stuiver M, Polach H (1977) Reporting of 14C data. Radiocarbon 19:355–363
Tans PP, Fung IY, Takahashi T (1990) Observational constraints on the global atmospheric CO2 budget. Science 247:1431–1438
Tewary CK, Pandey U, Singh JS (1982) Soil and litter respiration rates in different microhabitats of a mixed oak-conifer forest and their control by edaphic conditions and substrate quality. Plant Soil 65:233–238
Trumbore SE (1993) Comparison of carbon dynamics in tropical and temperate soils using radiocarbon measurements. Global Biogeochem Cycles 7:275–290
Ugolini FC, Corti G, Agnelli A, Piccardi F (1996) Mineralogical, physical, and chemical properties of rock fragments in soil. Soil Sci 161:521–542
Vance ED, Brookes PC, Jenkinson DS (1987) An extraction method for measuring soil microbial biomass C. Soil Biol Biochem 19:703–707
Vogel JS (1992) Rapid production of graphite without contamination for biomedical AMS. Radiocarbon 34:344–350
Walkley A, Black IA (1934) An examination of the Degtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Sci 37:29–38
Yavitt JB, Fahey TJ, Simmons JA (1995) Methane and carbon dioxide dynamics in a northern hardwood ecosystem. Soil Sci Soc Am J 59:796–804
Acknowledgements
We are indebted to F. Furini for useful suggestions about the statistical treatment of data and M.J. Wilson for helpful criticism on the manuscript. This study was supported by a grant from the Università degli Studi di Firenze (ex quota 60%): "Modificazioni chimiche e biochimiche indotte nel suolo e nella pianta da fattori biotici e abiotici".
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Certini, G., Corti, G., Agnelli, A. et al. Carbon dioxide efflux and concentrations in two soils under temperate forests. Biol Fertil Soils 37, 39–46 (2003). https://doi.org/10.1007/s00374-002-0560-7
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DOI: https://doi.org/10.1007/s00374-002-0560-7