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Journal of Plant Research

, Volume 123, Issue 4, pp 531–541 | Cite as

Small-scale variation in ecosystem CO2 fluxes in an alpine meadow depends on plant biomass and species richness

  • Mitsuru Hirota
  • Pengcheng Zhang
  • Song Gu
  • Haihua Shen
  • Takeo Kuriyama
  • Yingnian Li
  • Yanhong Tang
JPR Symposium Carbon cycle process in East Asia

Abstract

Characterizing the spatial variation in the CO2 flux at both large and small scales is essential for precise estimation of an ecosystem’s CO2 sink strength. However, little is known about small-scale CO2 flux variations in an ecosystem. We explored these variations in a Kobresia meadow ecosystem on the Qinghai-Tibetan plateau in relation to spatial variability in species composition and biomass. We established 14 points and measured net ecosystem production (NEP), gross primary production (GPP), and ecosystem respiration (Re) in relation to vegetation biomass, species richness, and environmental variables at each point, using an automated chamber system during the 2005 growing season. Mean light-saturated NEP and GPP were 30.3 and 40.5 μmol CO2 m−2 s−1 [coefficient of variation (CV), 42.7 and 29.4], respectively. Mean Re at 20°C soil temperature, Re20, was −10.9 μmol CO2 m−2 s−1 (CV, 27.3). Re20 was positively correlated with vegetation biomass. GPPmax was positively correlated with species richness, but 2 of the 14 points were outliers. Vegetation biomass was the main determinant of spatial variation of Re, whereas species richness mainly affected that of GPP, probably reflecting the complexity of canopy structure and light partitioning in this small grassland patch.

Keywords

Ecosystem CO2 flux Ecosystem structure and functioning Spatial heterogeneity Species richness Qinghai-Tibetan plateau 

Notes

Acknowledgments

We thank Professor Jingyun Fang and Associate Professor Wei Wang at the Peking University for providing fieldwork support and technical assistance. This study was part of a joint research project between the National Institute for Environmental Studies, Japan, and the Northwest Institute of Plateau Biology, China, as part of the “Integrated Study for Terrestrial Carbon Management of Asia in the 21st Century Based on Scientific Advancements” and “Early Detection and Prediction of Climate Warming Based on the Long-Term Monitoring of Alpine Ecosystems on the Tibetan Plateau” projects. This study was supported by the One Hundred Talent Project (0429091211), by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS; No. 18710017), and by the JSPS-KOSEF-NSFC A3 Foresight Program (Quantifying and Predicting Terrestrial Carbon Sinks in East Asia: Toward a Network of Climate Change Research).

References

  1. Anten NPR, Hirose T (1999) Interspecific differences in aboveground growth patterns result in spatial and temporal partitioning of light among species in a tall-grass meadow. J Ecol 87:583–597CrossRefGoogle Scholar
  2. Anten NPS, Hirose T (2003) Shoot structure, leaf physiology, and daily carbon gain of plant species in a tallgrass meadow. Ecology 84:955–968CrossRefGoogle Scholar
  3. Arndal MF, Illeris L, Michelsen A, Albert K, Tamstorf M, Hansen BU (2009) Seasonal variation in gross ecosystem production, plant biomass, and carbon and nitrogen pools in five high arctic vegetation types. Arct Antarct Alp Res 41:164–173CrossRefGoogle Scholar
  4. Bubier JL, Moore TR, Crosby G (2006) Fine-scale vegetation distribution in a cool temperate peatland. Can J Bot 84:910–923CrossRefGoogle Scholar
  5. Canadell JG, Mooney HA, Baldocchi DD, Berry JA, Ehleringer JR, Field CB, Gower ST, Hollinger DY, Hunt JE, Jackson RB, Running SW, Shaver GR, Steffen W, Trumbore SE, Valentini R, Bond BY (2000) Carbon metabolism of the terrestrial biosphere: a multitechnique approach for improved understanding. Ecosystems 3:115–130CrossRefGoogle Scholar
  6. Chapin FS III (2003) Effects of plants traits on ecosystem and regional processes: a conceptual framework for predicting the consequences of global change. Ann Bot 91:455–465CrossRefPubMedGoogle Scholar
  7. Chen J, Yamamura Y, Hori Y, Shiyomi M, Yasuda T, Zhou H, Li Y, Tang Y (2007) Small-scale species richness and its spatial variation in an alpine meadow on the Qinghai-Tibet Plateau. Ecol Res 23:657–663CrossRefGoogle Scholar
  8. Davidson EA, Savage K, Verchot LV, Navarro R (2002) Minimizing artifacts and biases in chamber-based measurements of soil respiration. Agric For Meteorol 113:21–37CrossRefGoogle Scholar
  9. Diaz HF, Eischeid JK, Duncan C, Bradley RS (2003) Variability of freezing levels, melting season indicators, and snow cover for selected high-elevation and continental regions in the last 50 years. Clim Change 59:33–52CrossRefGoogle Scholar
  10. Farrar J, Hawes M, Jones D, Lindow S (2003) How roots control the flux of carbon to the rhizosphere. Ecology 84:827–837CrossRefGoogle Scholar
  11. Fierer N, Colman B, Schimel JP, Jackson PB (2006) Predicting the temperature dependence of microbial respiration in soil: a continental-scale analysis. Glob Biogeochem Cycles 20:GB3026. doi: 10.1029/2005GB002644 CrossRefGoogle Scholar
  12. Flanagan LB, Wever LA, Carlson PJ (2002) Seasonal and interannual variation in carbon dioxide exchange and carbon balance in a northern temperate grassland. Glob Change Biol 8:599–615CrossRefGoogle Scholar
  13. Gilmanov TG, Soussana JF, Allards AL, Ammann C, Balzarolo M, Barza Z, Bernhofer C, Campbell CL, Cescatti A, Clifton-Brown J, Dirks BOM, Dore S, Eugster W, Fuhrer J, Gimenco C, Gruenwald C, Haszpra L, Hensen A, Ibrom A, Jacobs AFG, Jones MB, Laurila G, Lohila A, Manca G, Marcolla B, Nagy Z, Pilegaard K, Pinter K, Pio C, Raschi A, Rogiers N, Sanz MJ, Stefani P, Sutton M, Tuba Z, Valentini R, Williams ML, Wohlfahrt G (2007) Partitioning European grassland net ecosystem CO2 exchange into gross primary productivity and ecosystem respiration using light response function analysis. Agric Ecosyst Environ 121:93–120CrossRefGoogle Scholar
  14. Grime JP (2001) Plant strategies, vegetation processes, and ecosystem properties, 2nd edn. Wiley, LondonGoogle Scholar
  15. Gu S, Tang Y, Cui X, Kato T, Du M, Li Y, Zhao X (2005) Energy exchange between the atmosphere and a meadow ecosystem on the Qinghai-Tibetan Plateau. Agric For Meteorol 129:175–185CrossRefGoogle Scholar
  16. Hirota M, Tang Y, Hu Q, Hirata S, Kato T, Mo W, Cao G, Mariko S (2006) Carbon dynamics in a deep-water wetland on the Qinghai-Tibetan Plateau. Ecosystems 9:673–688CrossRefGoogle Scholar
  17. Hirota M, Zhang P, Gu S, Du M, Shimono A, Shen H, Li Y, Tang Y (2009) Altitudinal variation of ecosystem CO2 fluxes in an alpine grassland from 3600 to 4200 m. J Plant Ecol 2:197–205CrossRefGoogle Scholar
  18. Høye TT, Post E, Meltofte H, Schmidt NM, Forchhammer MC (2007) Rapid advancement of spring in the High Arctic. Curr Biol 17:R449–R451CrossRefPubMedGoogle Scholar
  19. IPCC (2007) Climate change 2007: the physical science basis. Cambridge University Press, CambridgeGoogle Scholar
  20. Ito A (2008) The regional carbon budget of East Asia simulated with a terrestrial ecosystem model and validated using AsiaFlux data. Agric For Meteorol 148:738–747CrossRefGoogle Scholar
  21. Kato T, Tang Y (2008) Spatial variability and major controlling factors of CO2 sink strength in Asian terrestrial ecosystems: evidence from eddy covariance data. Glob Change Biol 14:2333–2348CrossRefGoogle Scholar
  22. Kato T, Tang Y, Gu S, Cui X, Hirota M, Du M, Li Y, Zhao X, Oikawa T (2004) Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, China. Agric For Meteorol 124:121–134CrossRefGoogle Scholar
  23. Kicklighter DW, Bondeau A, Schloss AL, Kaduk J, McGuire AD, the Participants of the Potsdam NPP Model Intercomparison (1999) Comparing global models of terrestrial net primary productivity (NPP): global pattern and differentiation by major biomes. Glob Change Biol 5:16–24CrossRefGoogle Scholar
  24. Kim J, Verma SB, Clement RJ (1992) Carbon dioxide budget in temperate grassland ecosystem. J Geophys Res 97:6057–6063CrossRefGoogle Scholar
  25. Klein JA, Harte J, Zhao XQ (2004) Experimental warming causes large and rapid species loss, dampened by simulated grazing, on the Tibetan Plateau. Ecol Lett 7:1170–1179CrossRefGoogle Scholar
  26. Knorr W, Prentice IC, House JI, Holland EA (2005) Long-term sensitivity of soil carbon turnover to warming. Nature 433:298–301CrossRefPubMedGoogle Scholar
  27. Li W, Zhou X (eds) (1998) Ecosystems of Qinghai-Xizang (Tibetan) Plateau and approach for their sustainable management. Series of studies on Qinghai-Xizang (Tibetan) Plateau. Guangdong Science & Technology Press, GuangdongGoogle Scholar
  28. Loreau M, Hector A (2001) Partitioning selection and complementarity in biodiversity experiments. Nature 412:72–76CrossRefPubMedGoogle Scholar
  29. Loreau M, Naeem S, Inchausti P (eds) (2002) Biodiversity and ecosystem functioning synthesis and perspectives. Oxford University Press, OxfordGoogle Scholar
  30. Lund CP, Riley WJ, Pierce LL, Field CB (1999) The effects of chamber pressurization on soil-surface CO2 flux and the implications for NEE measurements under elevated CO2. Glob Change Biol 5:269–281CrossRefGoogle Scholar
  31. Meharg AA, Killham K (1995) Loss of exudates from the roots of perennial ryegrass inoculated with a range of microorganisms. Plant Soil 170:345–349CrossRefGoogle Scholar
  32. Nakano T, Nemoto M, Shinoda M (2008) Environmental controls on photosynthetic production and ecosystem respiration in semi-arid grasslands of Mongolia. Agric For Meteorol 148:1456–1466CrossRefGoogle Scholar
  33. Raich JW, Schlesinger WH (1992) The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate. Tellus 44B:81–90Google Scholar
  34. Risch AC, Frank DA (2006) Carbon dioxide fluxes in a spatially and temporally heterogeneous temperate grassland. Oecologia 147:291–302CrossRefPubMedGoogle Scholar
  35. Scurlock JMO, Hall DO (1998) The global carbon sink: a grassland perspective. Glob Change Biol 4:229–233CrossRefGoogle Scholar
  36. Scurlock JMO, Johnson K, Olson RJ (2002) Estimating net primary productivity from grassland biomass dynamics measurements. Glob Change Biol 8:736–753CrossRefGoogle Scholar
  37. Shaver GR, Street LE, Rastetter EB, Van Wijk MT, Williams M (2007) Functional convergence in regulation of net CO2 flux in heterogeneous tundra landscapes in Alaska and Sweden. J Ecol 95:802–817CrossRefGoogle Scholar
  38. Sims PL, Risser PG (2000) Grasslands. p. 323–356. Grasslands. In: Barbour MG, Billings WG (eds) North American terrestrial vegetation, 2nd edn. Cambridge University Press, New YorkGoogle Scholar
  39. Sjögersten SR, van der Wal R, Woodin SJ (2006) Small-scale hydrological variation determines landscape CO2 fluxes in the high arctic. Biogeochemistry 80:235–246CrossRefGoogle Scholar
  40. Street LE, Shaver GR, Williams M, Van Wijk MT (2007) What is the relationship between changes in canopy leaf area and changes in photosynthetic CO2 flux in arctic ecosystems? J Ecol 95:139–150CrossRefGoogle Scholar
  41. Thornley MN, Johnson IR (1990) Plant and crop modeling; a mathematical approach to plant and crop physiology. Clarendon, OxfordGoogle Scholar
  42. Tilman D, Reich PB, Knops J, Wedin D, Mielke T, Lehman C (2001) Diversity and productivity in a long-term grassland experiment. Science 294:843–845CrossRefPubMedGoogle Scholar
  43. Turner DP, Urbanski S, Bremer D, Wofsy SC, Meyers T, Gower ST, Gregory M (2003) A cross-biome comparison of daily light use efficiency for gross primary production. Glob Change Biol 9:383–395CrossRefGoogle Scholar
  44. Uchida M, Kishimoto M, Muraoka H, Nakatsubo T, Kanda H, Koizumi H (2009) Seasonal shift in factors controlling net ecosystem production in a high Arctic terrestrial ecosystem J Plant Res. doi: 10.1007/s10265-009-0260-6
  45. Van der Wal R (2006) Do herbivores cause habitat degradation or vegetation state transition? Evidence from the tundra. Oikos 114:177–186CrossRefGoogle Scholar
  46. Vojtech E, Loreau M, Yachi S, Spehn EM, Hector A (2008) Light partitioning in experimental grass communities. Oikos 117:1351–1361CrossRefGoogle Scholar
  47. Wang W, Ohse K, Liu J, Mo W, Oikawa T (2005) Contribution of root respiration to soil respiration in a C3/C4 mixed grassland. J Biosci 30:507–514CrossRefPubMedGoogle Scholar
  48. Wilsey BJ, Parent G, Roulet NT, Moore TR, Potvin C (2002) Tropical pasture carbon cycling: relationships between C source/sink strength, above-ground biomass and grazing. Ecol Lett 5:367–376CrossRefGoogle Scholar
  49. Xu LK, Baldocchi DD (2004) Seasonal variation in carbon dioxide exchange over a Mediterranean annual grassland in California. Agric For Meteorol 123:79–96CrossRefGoogle Scholar
  50. Zhang P, Tang Y, Hirota M, Yamamoto A, Mariko S (2009) Use of a regression method to partition sources of ecosystem respiration in an alpine meadow. Soil Biol Biochem 41:663–670CrossRefGoogle Scholar
  51. Zhao L, Li Y, Xu S, Zhou H, Gu S, Yu G, Zhao X (2006) Diurnal, seasonal and annual variation in net ecosystem CO2 exchange of an alpine shrubland on Qinghai-Tibetan plateau. Glob Change Biol 12:1940–1953CrossRefGoogle Scholar

Copyright information

© The Botanical Society of Japan and Springer 2010

Authors and Affiliations

  • Mitsuru Hirota
    • 1
  • Pengcheng Zhang
    • 1
  • Song Gu
    • 2
  • Haihua Shen
    • 3
  • Takeo Kuriyama
    • 4
  • Yingnian Li
    • 2
  • Yanhong Tang
    • 3
  1. 1.Graduate School of Life and Environmental SciencesUniversity of TsukubaTsukubaJapan
  2. 2.Northwest Plateau Institute of BiologyChinese Academy of SciencesXiningPeople’s Republic of China
  3. 3.National Institute for Environmental StudiesTsukubaJapan
  4. 4.Department of Biology, Faculty of ScienceToho UniversityFunabashiJapan

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