DOI: 10.3724/SP.J.1258.2011.00722

Chinese Journal of Plant Ecology (植物生态学报) 2011/35:7 PP.722-730

Components of soil respiration and its temperature sensitivity in four types of forests along an elevational gradient in Shennongjia, China

Aims Quantifying forest soil respiration (Rs), its components of heterotrophic respiration (RH) and autotrophic respiration (RA), and their responses to temperature are vital to accurately evaluate response of the terrestrial carbon balance to future climate change. Our specific objectives were to (1) compare patterns of soil respiration of four types of forests, (2) evaluate relationships among soil respiration and temperature and water content and (3) find the regulation of Q10 value in relation to elevation. Methods Four types of forests along an elevational gradient at Shennongjia were investigated. The trenching plot approach was used to partition soil respiration into autotrophic respiration and heterotrophic respiration. Rates of soil respiration were measured twice a month from July 2009 to June 2010. Soil temperature and soil water content were measured at the same time. Important findings Annual soil respiration of the four types of forests was 1.63, 1.79, 1.74 and 1.35 μmol CO2·m–2·s–1, and annual heterotrophic respiration was 1.13, 1.12, 1.12, 0.80 μmol CO2·m–2·s–1. Soil respiration and its components displayed obvious seasonal dynamics, with maximum values in summer and minimum values in winter. The soil respiration flux of broad-leaved forest was significantly higher than that of coniferous forests, but there was no obvious differentiation between broad-leaved forests. Soil temperature was the main factor that affected soil res-piration and its components, and there were significant exponential relationships between them. There was no sig-nificant relationship between soil water content and soil respiration flux, except in broad-leaved forest with a mild inhibition phenomenon. Q10 values of four types of forests were 2.38, 2.68, 2.99 and 4.24. Soil respiration was more sensitive to temperature along the elevation gradient, while Q10 value increased with elevation increase.

Key words:autotrophic respiration (RA), heterotrophic respiration (RH), Q10 value, soil water content, soil temperature

ReleaseDate:2014-07-21 15:58:06

Bahn M, Rodeghiero M, Anderson-Dunn M, Dore S, Gimeno G, Drösler M, Williams M, Ammann C, Berninger F, Flechard C, Jones S, Balzarolo M, Kumar S, Newesely C, Priwitzer T, Raschi A, Siegwolf R, Susiluoto S, Tenhunen J, Wohlfahrt G, Cernusca A (2008). Soil respiration in European grasslands in relation to climate and assimilate supply. Ecosystems, 11, 1352-1367.

Bhupinderpal S, Nordgren A, Löfvenius MO, Högberg MN, Mellander PE, Högberg P (2003). Tree root and soil heterotrophic respiration as revealed by girdling of boreal Scots pine forest: extending observations beyond the first year. Plant, Cell & Environment, 26, 1287-1296.

Bond-Lamberty B, Wang CK, Gower ST (2004). A global relationship between the heterotrophic and autotrophic com-ponents of soil respiration. Global Change Biology, 10, 1756-1766.

Boone RD, Nadelhoffer KJ, Canary JD, Kaye JP (1998). Roots exert a strong influence on the temperature sensitivity of soil respiration. Nature, 396, 570-572.

Campbell JL, Law BE (2005). Forest soil respiration across three climatically distinct chronosequences in Oregon. Biogeochemistry, 73, 109-125.

Cox PM, Betts RA, Jones CD, Spall SA, Totterdell IJ (2000). Acceleration of global warming due to carbon-cycle feed-backs in a coupled climate model. Nature, 408, 184-187.

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 Biology, 4, 217-227.

Davidson EA, Verchot LV, Cattânio JH, Ackerman IL, Carvalho JEM (2000). Effects of soil water content on soil respiration in forests and cattle pastures of eastern Amazonia. Biogeochemistry, 48, 53-69.

Davidson EA, Janssens IA (2006). Temperature sensitivity of soil carbon decomposition and feedbacks to climate change. Nature, 440, 165-173.

Davidson EA, Janssens IA, Luo Y (2006). On the variability of respiration in terrestrial ecosystems: moving beyond Q10. Global Chang Biology, 12, 154-164.

Dixon RK, Solomon AM, Brown S, Houghton RA, Trexier MC, Wisniewski J (1994). Carbon pools and flux of global forest ecosystems. Science, 263, 185-190.

Epron D, Le Dantec V, Dufrence E, Granier A (2001). Sea-sonal dynamics of soil carbon dioxide efflux and simu-lated rhizosphere respiration in a beech forest. Tree Physiology, 21, 145-152.

Gaumont-Guay D, Black TA, McCaughey H, Barr AG, Krishnan P, Jassal RS, Nesic Z (2009). Soil CO2 efflux in contrasting boreal deciduous and coniferous stands and its contribution to the ecosystem carbon balance. Global Change Biology, 15, 1302-1319.

Hanson PJ, Edwards NT, Garten CT, Andrews JA (2000). Separating root and soil microbial contributions to soil respiration: a review of methods and observations. Biogeochemistry, 48, 115-146.

Hartley IP, Heinemeyer A, Evans SP, Ineson P (2007). The effect of soil warming on bulk soil vs. rhizosphere respiration. Global Change Biology, 13, 2654-2667.

Hibbard KA, Law BE, Reichstein M, Sulzman J (2005). An analysis of soil respiration across northern hemisphere temperate ecosystems. Biogeochemistry, 73, 29-70.

Högberg P, Nordgren A, Buchmann N, Taylor AFS, Ekblad A, Högberg MN, Nyberg G, Ottosson-Löfvenius M, Read DJ (2001). Large-scale forest girdling shows that current photosynthesis drives soil respiration. Nature, 411, 789-792.

Högberg P, Read DJ (2006). Towards a more plant physiological perspective on soil ecology. Trends in Ecology & Evolution, 21, 548-554.

Janssens IA, Pilegaard K (2003). Large seasonal changes in Q(10) of soil respiration in a beech forest. Global Change Biology, 9, 911-918.

Kang SY, Doh S, Lee D, Jin V, Kimball JS (2003). Topog-raphic and climatic controls on soil respiration in six temperate mixed-hardwood forest slopes, Korea. Global Change Biology, 9, 1427-1437.

Kirschbaum MUF (2000). Will changes in soil organic carbon act a positive or negative feedback on global warming? Biogeochemistry, 48, 21-51.

Kuzyakov Y, Cheng W (2001). Photosynthesis controls of rhizosphere respiration and organic matter decomposition. Soil Biology & Biochemistry, 33, 1915-1925.

Landsberg JJ, Gower ST (1997). Applications of Physiological Ecology to Forest Management. Academic Press, San Diego, USA.

Lavigne MB, Boutin R, Foster RJ, Goodine G, Bernier PY, Robitaille G (2003). Soil respiration responses to temperature are controlled more by roots than by decomposition in balsam fir ecosystems. Canadian Journal of Forest Research, 33, 1744-1753.

Lee MS, Nakane K, Nakatsubo T, Koizumi H (2003). Seasonal changes in the contribution of root respiration to total soil respiration in a cool-temperature deciduous forest. Plant and Soil, 255, 311-318.

Lee NY, Koo JW, Noh JN, Kim J, Son Y (2010). Autotrophic and heterotrophic respiration in needle fir and Quercus-dominated stands in a cool-temperate forest, central Korea. Journal of Plant Research, 123, 485-495.

Lee X, Wu HJ, Sigler J, Oishi C, Siccama T (2004). Rapid and transient response of soil respiration to rain. Global Change Biology, 10, 1017-1026.

Liu WX, Zhang Z, Wan SQ (2009). Predominant role of water in regulating soil and microbial respiration and their responses to climate change in a semiarid grassland. Global Change Biology, 15, 184-195.

Lloyd J, Taylor JA (1994). On the temperature dependence of soil respiration. Functional Ecology, 8, 315-323.

Luo YQ, Zhou XH (2006). Soil Respiration and the Environment. Academic/Elsevier, San Diego, USA.

O’Connell KEB, Gower ST, Norman JM (2003). Net ecosystem production of two contrasting boreal black spruce forest communities. Ecosystems, 6, 248-260.

Raich JW, Potter CS (1995). Global pattern of carbon dioxide emission from soil. Global Biochemical Cycles, 9, 23-36.

Raich JW, Potter CS, Bhagawati D (2002). Interannual variability in global soil respiration, 1980-1984. Global Change Biology, 8, 800-812.

Raich JW, Schlesinger WH (1992). The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate. Tellus B, 44, 81-99.

Raich JW, Tufekcioglu A (2000). Vegetation and soil respiration: correlations and controls. Biogeochemistry, 48, 71-90.

Reichstein M, Rey A, Freibauer A, Tenhunen J, Valentini J, Banza J, Casals P, Cheng YF, Grunzweig JM, Irvine J, Joffre R, Law BE, Loustau D, Miglietta F, Oechel W, Ourcival JM, Pereira JS, Peressotti A, Ponti F, Qi Y, Rambal S, Rayment M, Romanya J, Rossi F, Tedeschi V, Tirone G, Xu M, Yakir D (2003). Modeling temporal and large-scale spatial variability of soil respiration from soil water availability, temperature and vegetation productivity indices. Global Biogeochemical Cycles, 17, 1104,.

Rey A, Pegoraro E, Tedeschi V, Parri LD, Jarvis PG, Valentini R (2002). Annual variation in soil respiration and its components in a coppice oak forest in Central Italy. Global Change Biology, 8, 851-866.

Rodeghiero M, Cescatti A (2005). Main determinants of forest soil respiration along an elevation/temperature gradient in the Italian Alps. Global Change Biology, 11, 1024-1041.

Ryan MG, Law BE (2005). Interpreting, measuring, and modeling soil respiration. Biogeochemistry, 73, 3-27.

Saiz G, Byrne KA, Butterbach-Bahl K, Kiese R, Blujdea V, Farrell EP (2006). Stand age-related effects on soil respi-ration in a first rotation Sitka spruce chronosequence in central Ireland. Global Change Biology, 12, 1007-1020.

Schlesinger WH (1990). Evidence from chronosequence studies for a low carbon-storage potential of soil. Nature, 348, 232-234.

Scott-Denton LE, Rosenstiel N, Monson PK (2006). Differential controls by climate and substrate over the heterotrophic and rhizospheric components of soil respiration. Global Change Biology, 12, 205-216.

Tans PP, Fung IY, Takahashi T (1990). Observational con-straints on the global atmospheric CO2 budget. Science, 247, 1431-1438.

Wan SQ, Norby RJ, Ledford J, Weltzin JF (2007). Responses of soil respiration to elevated CO2, air warming, and changing soil water availability in a model old-field grassland. Global Change Biology, 13, 2411-2424.

Wang C, Yang J (2007). Rhizospheric and heterotrophic components of soil respiration in six Chinese temperate forests. Global Change Biology, 13, 123-131.

Wang CK, Gower ST, Wang YH, Zhao HX, Yan P, Bond-Lamberty BP (2001). The influence of fire on carbon distribution and net primary production of boreal Larix gmelinii forests in north-eastern China. Global Change Biology, 7, 719-730.

Wang CK, Bond-Lamberty B, Gower ST (2002). Soil surface CO2 flux in a boreal black spruce fire chronosequence. Journal of Geophysical Research-Atmospheres, 107, 8224,.

Wang CK, Yang JY, Zhang QZ (2006). Soil respiration in six temperate forests in China. Global Change Biology, 12, 2013-2114.

Zheng ZM, Yu GR, Fu YL, Wang YS, Sun XM, Wang YH (2009). Temperature sensitivity of soil respiration is affected by prevailing climatic conditions and soil organic carbon content: a trans-China based study. Soil Biology & Biochemistry, 41, 1531-1540.

Zhou XH, Wan SQ, Luo YQ (2007). Source components and inter-annual variability of soil CO2 efflux under experimental warming and clipping in a grassland ecosystem. Global Change Biology, 13, 761-775.

Zimmermann M, Meir P, Bird MI, Malhi Y, Ccahuana AJQ (2010). Temporal variation and climate dependence of soil respiration and its components along a 3000 m altitudinal tropical forest gradient. Global Biogeochemical Cy-cles, 24, GB4012, doi:10.1029/2010GB003787