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Volumn 2, Issue 4, 2009, Pages 187-196

Characterization of CO2 flux in three Kobresia meadows differing in dominant species

Author keywords

Alpine meadow; CO2 flux; Ecosystem photosynthesis; Ecosystem respiration; Soil moisture

Indexed keywords

KOBRESIA; KOBRESIA HUMILIS; KOBRESIA PYGMAEA;

EID: 77949454279     PISSN: 17529921     EISSN: 1752993X     Source Type: Journal    
DOI: 10.1093/jpe/rtp027     Document Type: Article
Times cited : (15)

References (59)
  • 1
    • 0025656132 scopus 로고
    • Increases in terrestrial carbon storage from the Last Glacial Maximum to the present
    • Adams JM, Faure H, Faure-Denard L, et al. (1990) Increases in terrestrial carbon storage from the Last Glacial Maximum to the present. Nature 348:711-714
    • (1990) Nature , vol.348 , pp. 711-714
    • Adams, J.M.1    Faure, H.2    Faure-Denard, L.3
  • 3
    • 33144470717 scopus 로고    scopus 로고
    • 2 fluxes in adjacent new and permanent temperate grasslands
    • 2 fluxes in adjacent new and permanent temperate grasslands. Agric For Meteorol 135:82-92.
    • (2005) Agric for Meteorol , vol.135 , pp. 82-92
    • Byrne, K.A.1    Kiely, G.2    Leahy, P.3
  • 4
    • 1042290564 scopus 로고    scopus 로고
    • Grazing intensity alters soil respiration in an alpine meadow on the Tibetan plateau
    • Cao G, Tang Y, Mo W, et al. (2004) Grazing intensity alters soil respiration in an alpine meadow on the Tibetan plateau. Soil Biol Biochem 36:237-243
    • (2004) Soil Biol Biochem , vol.36 , pp. 237-243
    • Cao, G.1    Tang, Y.2    Mo, W.3
  • 5
    • 0033008794 scopus 로고    scopus 로고
    • Effects of climatic variability on the annual carbon sequestration by a boreal aspen forest
    • Chen WJ, Black TA, Yang PC, et al. (1999) Effects of climatic variability on the annual carbon sequestration by a boreal aspen forest. Global Change Biol 5:41-53.
    • (1999) Global Change Biol , vol.5 , pp. 41-53
    • Chen, W.J.1    Black, T.A.2    Yang, P.C.3
  • 7
    • 0035000547 scopus 로고    scopus 로고
    • 2 and climate change: Results from six dynamic global vegetation models
    • 2 and climate change: results from six dynamic global vegetation models. Global Change Biol 7:357-373
    • (2001) Global Change Biol , vol.7 , pp. 357-373
    • Cramer, W.1    Bondeau, A.2    Woodward, F.I.3
  • 9
    • 0035283089 scopus 로고    scopus 로고
    • Gap filling strategies for defensible annual sums of net ecosystem exchange
    • Falge E, Baldocchi D, Olson RJ (2001) Gap filling strategies for defensible annual sums of net ecosystem exchange. Agric For Meteorol 107:43-69.
    • (2001) Agric for Meteorol , vol.107 , pp. 43-69
    • Falge, E.1    Baldocchi, D.2    Olson, R.J.3
  • 10
    • 0032538377 scopus 로고    scopus 로고
    • A large terrestrial carbon sink in North America implied by atmospheric and oceanic carbon dioxide data and models
    • Fan SM, Mahlman J, Pacala S, et al. (1998) A large terrestrial carbon sink in North America implied by atmospheric and oceanic carbon dioxide data and models. Science 282:442-446
    • (1998) Science , vol.282 , pp. 442-446
    • Fan, S.M.1    Mahlman, J.2    Pacala, S.3
  • 12
    • 0036077741 scopus 로고    scopus 로고
    • Seasonal and interannual variation in carbon dioxide exchange and carbon balance in a northern temperate grassland
    • Flanagan LB, Wever LA, Carlson PJ (2002) Seasonal and interannual variation in carbon dioxide exchange and carbon balance in a northern temperate grassland. Global Change Biol 8:599-615.
    • (2002) Global Change Biol , vol.8 , pp. 599-615
    • Flanagan, L.B.1    Wever, L.A.2    Carlson, P.J.3
  • 13
    • 0041910148 scopus 로고    scopus 로고
    • 2 flux, and biomass for Northern plains grasslands
    • 2 flux, and biomass for Northern plains grasslands. J Range Manag 56:382-387
    • (2003) J Range Manag , vol.56 , pp. 382-387
    • Frank, A.B.1    Karn, J.F.2
  • 14
    • 0036157341 scopus 로고    scopus 로고
    • Environmental controls on soil and whole-ecosystem respiration from a tallgrass prairie
    • Franzluebbers K, Franzluebbers AJ, Jawson MD (2002) Environmental controls on soil and whole-ecosystem respiration from a tallgrass prairie. Soil Sci Soc Am J 66:254-262
    • (2002) Soil Sci Soc Am J , vol.66 , pp. 254-262
    • Franzluebbers, K.1    Franzluebbers, A.J.2    Jawson, M.D.3
  • 15
    • 19344378874 scopus 로고    scopus 로고
    • 2 flux and remotely-sensed data for primary production and ecosystem respiration analyses in the Northern Great Plains: Potential for quantitative spatial extrapolation
    • 2 flux and remotely-sensed data for primary production and ecosystem respiration analyses in the Northern Great Plains: potential for quantitative spatial extrapolation. Global Ecol Biogeogr 14:271-292
    • (2005) Global Ecol Biogeogr , vol.14 , pp. 271-292
    • Gilmanov, G.1    Tieszen, L.L.2    Wylie, B.K.3
  • 16
    • 0030426558 scopus 로고    scopus 로고
    • Measurements of carbon sequestration by long-term eddy covariance: Methods and a critical evaluation of accuracy
    • Goulden ML, Munger JW, Fan SM, et al. (1996) Measurements of carbon sequestration by long-term eddy covariance: methods and a critical evaluation of accuracy. Global Change Biol 2:169-182
    • (1996) Global Change Biol , vol.2 , pp. 169-182
    • Goulden, M.L.1    Munger, J.W.2    Fan, S.M.3
  • 17
    • 4644247274 scopus 로고    scopus 로고
    • Seasonal variation and partitioning of ecosystem respiration in a southern boreal aspen forest
    • Griffis TJ, Black TA, Gaumont-Guay D, et al. (2004) Seasonal variation and partitioning of ecosystem respiration in a southern boreal aspen forest. Agric For Meteorol 125:207-223
    • (2004) Agric for Meteorol , vol.125 , pp. 207-223
    • Griffis, T.J.1    Black, T.A.2    Gaumont-Guay, D.3
  • 18
    • 1342268174 scopus 로고    scopus 로고
    • 2 flux in relation to environmental controls in an alpine meadow on the Qinghai-Tibetan Plateau
    • 2 flux in relation to environmental controls in an alpine meadow on the Qinghai-Tibetan Plateau. J Geophys Res 108:4670.
    • (2003) J Geophys Res , vol.108 , pp. 4670
    • Gu, S.1    Tang, Y.H.2    Du, M.Y.3
  • 19
    • 0031950710 scopus 로고    scopus 로고
    • 2, water vapor, and energy from a prairie ecosystem during the seasonal transition from carbon sink to carbon source
    • 2, water vapor, and energy from a prairie ecosystem during the seasonal transition from carbon sink to carbon source. Agric For Meteorol 89:1-14.
    • (1998) Agric for Meteorol , vol.89 , pp. 1-14
    • Ham, J.M.1    Knapp, A.K.2
  • 20
    • 7244221633 scopus 로고    scopus 로고
    • Long-term carbon exchange in a sparse, seasonally dry tussock grassland
    • Hunt JE, Kelliher FM, McSeveny TM, et al. (2004) Long-term carbon exchange in a sparse, seasonally dry tussock grassland. Global Change Biol 10:1785-1800
    • (2004) Global Change Biol , vol.10 , pp. 1785-1800
    • Hunt, J.E.1    Kelliher, F.M.2    McSeveny, T.M.3
  • 21
    • 0036606325 scopus 로고    scopus 로고
    • A simulation model of the carbon cycle in land ecosystems (Sim-CYCLE): A description based on dry-matter production theory and plot-scale validation
    • Ito A, Oikawa T (2002) A simulation model of the carbon cycle in land ecosystems (Sim-CYCLE): a description based on dry-matter production theory and plot-scale validation. Ecol modell 151:143-176
    • (2002) Ecol Modell , vol.151 , pp. 143-176
    • Ito, A.1    Oikawa, T.2
  • 22
    • 0345414540 scopus 로고    scopus 로고
    • Carbon dioxide and water vapour flux densities over a grassland area in the Netherlands
    • Jacobs AFG, Heusinkveld BG, Holtslag AAM (2003) Carbon dioxide and water vapour flux densities over a grassland area in the Netherlands. Int J Climatol 23:1663-1675
    • (2003) Int J Climatol , vol.23 , pp. 1663-1675
    • Jacobs, A.F.G.1    Heusinkveld, B.G.2    Holtslag, A.A.M.3
  • 23
    • 33749370953 scopus 로고    scopus 로고
    • Net ecosystem exchange of grassland in contrasting wet and dry years
    • Jaksic V, Kiely G, Albertson J, et al. (2006) Net ecosystem exchange of grassland in contrasting wet and dry years. Agric For Meteorol 139:323-334
    • (2006) Agric for Meteorol , vol.139 , pp. 323-334
    • Jaksic, V.1    Kiely, G.2    Albertson, J.3
  • 25
    • 4444287874 scopus 로고    scopus 로고
    • Seasonal patterns of gross primary production and ecosystem respiration in an alpine meadow ecosystem on the Qinghai-Tibetan Plateau
    • Kato T, Tang YH, Gu S, et al. (2004) Seasonal patterns of gross primary production and ecosystem respiration in an alpine meadow ecosystem on the Qinghai-Tibetan Plateau. J Geophys Res 109: D12109.
    • (2004) J Geophys Res , vol.109
    • Kato, T.1    Tang, Y.H.2    Gu, S.3
  • 26
    • 33745217568 scopus 로고    scopus 로고
    • 2 exchange in an alpine meadow on the Qinghai-Tibetan Plateau
    • 2 exchange in an alpine meadow on the Qinghai-Tibetan Plateau. Global Change Biol 12: 1283-1298
    • (2006) Global Change Biol , vol.12 , pp. 1283-1298
    • Kato, T.1    Tang, Y.H.2    Gu, S.3
  • 27
    • 3242657872 scopus 로고    scopus 로고
    • Carbon balance of different aged Scots pine forests in Southern Finland
    • Kolari P, Pumpanen J, Rannik U, et al. (2004) Carbon balance of different aged Scots pine forests in Southern Finland. Global Change Biol 10:1106-1119
    • (2004) Global Change Biol , vol.10 , pp. 1106-1119
    • Kolari, P.1    Pumpanen, J.2    Rannik, U.3
  • 28
    • 7244240824 scopus 로고    scopus 로고
    • Paired comparisons of carbon exchange between undisturbed and regenerating stands in four managed forests in Europe
    • Kowalski AS, Loustau D, Berbigier P, et al. (2004) Paired comparisons of carbon exchange between undisturbed and regenerating stands in four managed forests in Europe. Global Change Biol 10:1707-1723
    • (2004) Global Change Biol , vol.10 , pp. 1707-1723
    • Kowalski, A.S.1    Loustau, D.2    Berbigier, P.3
  • 29
    • 0031447731 scopus 로고    scopus 로고
    • Comparing nocturnal eddy covariance measurements to estimates of ecosystem respiration made by scaling chamber measurements at six coniferous boreal sites
    • Lavigne MB, Ryan MG, Anderson DE, et al. (1997) Comparing nocturnal eddy covariance measurements to estimates of ecosystem respiration made by scaling chamber measurements at six coniferous boreal sites. J Geophys Res 102:28977-28985
    • (1997) J Geophys Res , vol.102 , pp. 28977-28985
    • Lavigne, M.B.1    Ryan, M.G.2    Anderson, D.E.3
  • 30
    • 0035824377 scopus 로고    scopus 로고
    • Spatial and temporal variation in respiration in a young ponderosa pine forest during a summer drought
    • Law BE, Kelliher FM, Baldocchi DD, et al. (2001) Spatial and temporal variation in respiration in a young ponderosa pine forest during a summer drought. Agric For Meteorol 110:27-43.
    • (2001) Agric for Meteorol , vol.110 , pp. 27-43
    • Law, B.E.1    Kelliher, F.M.2    Baldocchi, D.D.3
  • 31
    • 0345518008 scopus 로고    scopus 로고
    • Seasonal and annual respiration of a ponderosa pine ecosystem
    • LawBE, RyanMG, AnthoniPM(1999) Seasonal and annual respiration of a ponderosa pine ecosystem. Global Change Biol 5:169-182
    • (1999) Global Change Biol , vol.5 , pp. 169-182
    • Law, B.E.1    Ryan, M.G.2    Anthoni, P.M.3
  • 32
    • 0032990670 scopus 로고    scopus 로고
    • Dependence of mineralization of soil organic matter on temperature and moisture
    • Leiros MC, Trasar-Cepeda C, Seoane S, et al. (1999) Dependence of mineralization of soil organic matter on temperature and moisture. Soil Biol Biochem 31:327-335
    • (1999) Soil Biol Biochem , vol.31 , pp. 327-335
    • Leiros, M.C.1    Trasar-Cepeda, C.2    Seoane, S.3
  • 33
    • 33645657930 scopus 로고    scopus 로고
    • Net ecosystem carbon dioxide exchange over grazed steppe in central Mongolia
    • Li SG, Asanuma J, Eugster W, et al. (2005) Net ecosystem carbon dioxide exchange over grazed steppe in central Mongolia. Global Change Biol 11:1-15.
    • (2005) Global Change Biol , vol.11 , pp. 1-15
    • Li, S.G.1    Asanuma, J.2    Eugster, W.3
  • 34
    • 7044274606 scopus 로고    scopus 로고
    • Climate impact on net ecosystem productivity of a semi-arid natural grassland: Modeling and measurement
    • Li T, Grant RF, Flanagan LB (2004) Climate impact on net ecosystem productivity of a semi-arid natural grassland: modeling and measurement. Agric For Meteorol 126:99-116.
    • (2004) Agric for Meteorol , vol.126 , pp. 99-116
    • Li, T.1    Grant, R.F.2    Flanagan, L.B.3
  • 35
    • 0028159926 scopus 로고
    • On the temperature dependence of soil respiration
    • Lloyd J, Taylor JA (1994) On the temperature dependence of soil respiration. Funct Ecol 8:315-323
    • (1994) Funct Ecol , vol.8 , pp. 315-323
    • Lloyd, J.1    Taylor, J.A.2
  • 36
    • 48949093592 scopus 로고    scopus 로고
    • 2] on ecosystem carbon and water dynamics in different climatic zones
    • 2] on ecosystem carbon and water dynamics in different climatic zones. Global Change Biol 14: 1986-1999
    • (2008) Global Change Biol , vol.14 , pp. 1986-1999
    • Luo, Y.1    Gerten, D.2    Le Maire, G.3
  • 37
    • 0035798908 scopus 로고    scopus 로고
    • 2 fluxes over rangeland for well watered and drought conditions
    • 2 fluxes over rangeland for well watered and drought conditions. Agric For Meteorol 106:205-214
    • (2001) Agric for Meteorol , vol.106 , pp. 205-214
    • Meyers, T.P.1
  • 38
    • 48249102235 scopus 로고    scopus 로고
    • Status and dynamics of Kobresia pygmaea ecosystem on the Tibetan plateau
    • Miehe G, Miehe S, Kaiser K, et al. (2008) Status and dynamics of Kobresia pygmaea ecosystem on the Tibetan plateau. Ambio 37:272-279
    • (2008) Ambio , vol.37 , pp. 272-279
    • Miehe, G.1    Miehe, S.2    Kaiser, K.3
  • 39
    • 0842309130 scopus 로고    scopus 로고
    • Carbon dioxide and water vapour exchange in a warm temperate grassland
    • Novick KA, Stoy PC, Katul GG, et al. (2004) Carbon dioxide and water vapour exchange in a warm temperate grassland. Oecologia 138:259-274
    • (2004) Oecologia , vol.138 , pp. 259-274
    • Novick, K.A.1    Stoy, P.C.2    Katul, G.G.3
  • 40
    • 0000808327 scopus 로고
    • Relationship between soil respiration and soil-moisture
    • Orchard VA, Cook FJ (1983) Relationship between soil respiration and soil-moisture. Soil Biol Biochem 15:447-453
    • (1983) Soil Biol Biochem , vol.15 , pp. 447-453
    • Orchard, V.A.1    Cook, F.J.2
  • 41
    • 0035933532 scopus 로고    scopus 로고
    • Consistent land- and atmosphere-based US carbon sink estimates
    • Pacala SW, Hurtt GC, Baker D, et al. (2001) Consistent land- and atmosphere-based US carbon sink estimates. Science 292:2316-2320
    • (2001) Science , vol.292 , pp. 2316-2320
    • Pacala, S.W.1    Hurtt, G.C.2    Baker, D.3
  • 42
    • 0032457079 scopus 로고    scopus 로고
    • LINGRA, a sink/source model to simulate grassland productivity in Europe
    • Schapendonk AHCM, Stol W, van Kraalingen DWG, et al. (1998) LINGRA, a sink/source model to simulate grassland productivity in Europe. Eur J Agron 9:87-100.
    • (1998) Eur J Agron , vol.9 , pp. 87-100
    • Ahcm, S.1    Stol, W.2    Van Kraalingen, D.W.G.3
  • 43
    • 0035829597 scopus 로고    scopus 로고
    • Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems
    • Schimel DS, House JI, Hibbard KA, et al. (2001) Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems. Nature 414:169-172
    • (2001) Nature , vol.414 , pp. 169-172
    • Schimel, D.S.1    House, J.I.2    Hibbard, K.A.3
  • 44
    • 0032720352 scopus 로고    scopus 로고
    • Productivity of forests in the Eurosiberian boreal region and their potential to act as a carbon sink-a synthesis
    • Schulze ED, Lloyd J, Kelliher FM, et al. (1999) Productivity of forests in the Eurosiberian boreal region and their potential to act as a carbon sink-a synthesis. Global Change Biol 5:703-722
    • (1999) Global Change Biol , vol.5 , pp. 703-722
    • Schulze, E.D.1    Lloyd, J.2    Kelliher, F.M.3
  • 45
    • 39749152333 scopus 로고    scopus 로고
    • 2 exchange in a humid temperate C3/C4 co-occurring grassland
    • 2 exchange in a humid temperate C3/C4 co-occurring grassland. SOLA 1:169-172
    • (2005) SOLA , vol.1 , pp. 169-172
    • Shimoda, S.1    Mo, W.H.2    Oikawa, T.3
  • 46
    • 0035975205 scopus 로고    scopus 로고
    • Carbon dioxide fluxes in a southern plains prairie
    • Sims PL, Bradford JA (2001) Carbon dioxide fluxes in a southern plains prairie. Agric For Meteorol 109:117-134
    • (2001) Agric for Meteorol , vol.109 , pp. 117-134
    • Sims, P.L.1    Bradford, J.A.2
  • 47
    • 34249906881 scopus 로고    scopus 로고
    • Determinants of terrestrial ecosystem carbon balance inferred from European eddy covariance flux sites
    • Reichstein M, Papale D, Valentini R, et al. (2007) Determinants of terrestrial ecosystem carbon balance inferred from European eddy covariance flux sites. Geophys Res Lett 34:L01402.
    • (2007) Geophys Res Lett , vol.34
    • Reichstein, M.1    Papale, D.2    Valentini, R.3
  • 49
    • 0034690165 scopus 로고    scopus 로고
    • Respiration as the main determinant of carbon balance in European forests
    • Valentini R, Matteucci G, Dolman AJ, et al. (2000) Respiration as the main determinant of carbon balance in European forests. Nature 404:861-865
    • (2000) Nature , vol.404 , pp. 861-865
    • Valentini, R.1    Matteucci, G.2    Dolman, A.J.3
  • 50
    • 1842683851 scopus 로고    scopus 로고
    • Seasonal variation in energy fluxes and carbon dioxide exchange for a broad-leaved semi-arid savanna (Mopane woodland) in Southern Africa
    • Veenendaal EM, Kolle O, Lloyd J (2004) Seasonal variation in energy fluxes and carbon dioxide exchange for a broad-leaved semi-arid savanna (Mopane woodland) in Southern Africa. Global Change Biol 10:318-328
    • (2004) Global Change Biol , vol.10 , pp. 318-328
    • Veenendaal, E.M.1    Kolle, O.2    Lloyd, J.3
  • 51
    • 0034826705 scopus 로고    scopus 로고
    • Carbon dioxide exchange in Norway spruce at the shoot, tree and ecosystem scale
    • Wallin G, Linder S, Lindroth A, et al. (2001) Carbon dioxide exchange in Norway spruce at the shoot, tree and ecosystem scale. Tree Physiol 21:969-976
    • (2001) Tree Physiol , vol.21 , pp. 969-976
    • Wallin, G.1    Linder, S.2    Lindroth, A.3
  • 52
    • 38049062311 scopus 로고    scopus 로고
    • Changes in plant biomass and species composition of alpine Kobresia meadows along altitudinal gradient on the Qinghai-Tibetan Plateau
    • Wang CT, Cao GM, Wang QL, et al. (2008) Changes in plant biomass and species composition of alpine Kobresia meadows along altitudinal gradient on the Qinghai-Tibetan Plateau. Sci China Ser C Life Sci 51:86-94.
    • (2008) Sci China ser C Life Sci , vol.51 , pp. 86-94
    • Wang, C.T.1    Cao, G.M.2    Wang, Q.L.3
  • 53
    • 33646872466 scopus 로고    scopus 로고
    • Distribution and species diversity of plant communities along transect on the northeastern Tibetan plateau
    • Wang WY, Wang Q, Li SX, et al. (2006) Distribution and species diversity of plant communities along transect on the northeastern Tibetan plateau. Biodivers Conserv 15:1811-1828
    • (2006) Biodivers Conserv , vol.15 , pp. 1811-1828
    • Wang, W.Y.1    Wang, Q.2    Li, S.X.3
  • 55
    • 13244268740 scopus 로고    scopus 로고
    • Quantifying nighttime ecosystem respiration of a meadow using eddy covariance, chambers and modeling
    • Wohlfahrt G, Afgang C, Bahn M, et al. (2005) Quantifying nighttime ecosystem respiration of a meadow using eddy covariance, chambers and modeling. Agric For Meteorol 128:141-162
    • (2005) Agric for Meteorol , vol.128 , pp. 141-162
    • Wohlfahrt, G.1    Afgang, C.2    Bahn, M.3
  • 56
    • 4744349742 scopus 로고    scopus 로고
    • Seasonal variation in carbon dioxide exchange over a Mediterranean annual grassland in California
    • Xu L, Baldocchi DD (2004) Seasonal variation in carbon dioxide exchange over a Mediterranean annual grassland in California. Agric For Meteorol 123:79-96.
    • (2004) Agric for Meteorol , vol.123 , pp. 79-96
    • Xu, L.1    Baldocchi, D.D.2
  • 57
    • 4344647222 scopus 로고    scopus 로고
    • Carbon dynamics and budget in a Miscanthus sinensis grassland in Japan
    • Yazaki Y, Mariko S, Koizumi H (2004) Carbon dynamics and budget in a Miscanthus sinensis grassland in Japan. Ecol Res 19:511-520
    • (2004) Ecol Res , vol.19 , pp. 511-520
    • Yazaki, Y.1    Mariko, S.2    Koizumi, H.3
  • 58
    • 44849097543 scopus 로고    scopus 로고
    • Storage, patterns and controls of soil organic carbon in the Tibetan grasslands
    • Yang YH, Fang JY, Tang YH, et al. (2008) Storage, patterns and controls of soil organic carbon in the Tibetan grasslands. Global Change Biol 14:1592-1599
    • (2008) Global Change Biol , vol.14 , pp. 1592-1599
    • Yang, Y.H.1    Fang, J.Y.2    Tang, Y.H.3
  • 59
    • 62049084426 scopus 로고    scopus 로고
    • Use of a regression method to partition sources of ecosystem respiration in an alpine meadow
    • Zhang PC, Tang YH, Mitsuru H, et al. (2009) Use of a regression method to partition sources of ecosystem respiration in an alpine meadow. Soil Biol Biochem 41:663-670
    • (2009) Soil Biol Biochem , vol.41 , pp. 663-670
    • Zhang, P.C.1    Tang, Y.H.2    Mitsuru, H.3


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