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Schuur E.A, Trumbore S.E., 2006. Partitioning sources of soil respiration in boreal black spruce forest using 88 radiocarbon. Glob Change Biol 12, 165–176. Staddon P.L., Ostle N., Dawson L.A., Fitter A.H., 2003. The speed of soil carbon throughput in an upland grassland is increased by liming. J. Exp Bot 54, 1461-1469. Tang J., Baldocchi D.D., 2005. Spatial-temporal variation in soil respiration in an oak-grass savanna ecosystem in California and its partitioning into autotrophic and heterotrophic components. Biogeochem 73, 183-207. Tang J., Baldocchi D., Xu L., 2005. Tree photosynthesis modulates soil respiration on a diurnal time scale. Glob Change Biol 11, 1298-1304. Xu, D.Q., 1997. Some questions on stomatal limitation in photosynthesis. Plant Physiol Commun 33, 241–244 (in Chinese). Xu X., Kuzyakov Y., Wanek W., Richter A., 2008. Root-derived respiration and non-structural C of rice seedlings. Europ J Soil Biol 44, 22-29. Warembourg F.R., Estelrich H.D., 2000. Towards a better understanding of carbon flow in the rhizosphere: a time- dependent approach using carbon-14. Biol Fertil Soils 30, 528-534.
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Page 4 and 5:
explain diurnal and seasonal change
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sull’intensità del flusso respir
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8 3.2.4. Data analyses and definiti
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1. INTRODUCTION AND OVERVIEW 11
Page 13 and 14:
times as much carbon as the terrest
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Fig. 3 Different soil C pools with
Page 17 and 18:
1.3. Soil respiration sources Soil
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conditions, like soil type, plants
Page 21 and 22:
For grasslands, the nature, frequen
Page 23 and 24:
(a) (b) (c) Fig.7 Amplero (AQ, Ital
Page 25 and 26:
magnitude of root respiration and o
Page 27 and 28:
efficiency, indicating future posit
Page 29 and 30:
approaches for studying of the cont
Page 31 and 32:
Houghton R.A., 2003. Revised estima
Page 33:
Vleeshouwers L.M., Verhagen A. 2002
Page 36 and 37:
2.1. Introduction 36 Soil respirati
Page 38 and 39: 38 In the year 2005 ten PVC collars
Page 40 and 41: 2.2.4. Biochemical analyses Microbi
Page 42 and 43: 42 Variation of soil respiration fr
Page 44 and 45: CO 2 efflux (mmol m -2 s -1 ) 44 CO
Page 46 and 47: 46 All diurnal measurements of root
Page 48 and 49: 48 Q10 R 2 p Rs 2.51 0.77 0.000 Ra
Page 50 and 51: the photosynthesis and its followin
Page 52 and 53: 2.3.3. Inter-annual variation of so
Page 54 and 55: 54 RS RHET 8 6 6 4 25 4 2 2 25 20 T
Page 56 and 57: 2.4. Discussion 2.4.1. Partitioning
Page 58 and 59: measurements, the possibility to fi
Page 60 and 61: and Schlesinger, 1992; Moyano et al
Page 62 and 63: Janssens I.A., Pilegaard K., 2003.
Page 64: Xu X., Kuzyakov Y., Wanek W., Richt
Page 67 and 68: 3.1. Introduction Soil respiration
Page 69 and 70: Our experiment was conducted in a m
Page 71 and 72: Lactic acid 13 C 13 CO2 Root-derive
Page 73 and 74: At the end of the process, the subl
Page 75 and 76: where, MAs - the mean age of the co
Page 77 and 78: 13C of respiration ( o / oo ) 155 1
Page 79 and 80: Total Label Recovered (TLR, %) Ra R
Page 81 and 82: GPP (mmol m -2 s -1 ) 25 20 15 10 5
Page 83 and 84: frequent and possibly they missed t
Page 85 and 86: 3.4.3. Destructive vs. Non-destruct
Page 87: Gavrichkova O., Kuzyakov Y., 2008.
Page 91 and 92: 4.1. Introduction Land-use changes
Page 93 and 94: The soil is classified as Haplic Ph
Page 95 and 96: 4.2.3. Soil chemical and biochemica
Page 97 and 98: Soil enzymatic activity Criteria fo
Page 99 and 100: CO 2 (µmol m -2 s -1 ) 10 9 8 7 6
Page 101 and 102: Ts ( o C) SWC (%) 45 40 35 30 25 20
Page 103 and 104: Microbial respiration was also affe
Page 105 and 106: µg Biomass C g -1 µg C g -1 70 60
Page 107 and 108: MR 24 (µg C-CO 2 g -1 d -1 ) C m (
Page 109 and 110: enzymatic activity (nmoli MUB/AMC g
Page 111 and 112: elax of the microbial community in
Page 113 and 114: (C0k) was negatively affected by th
Page 115 and 116: These factors are very important fo
Page 117 and 118: Leake J.R., Johnson D., Donnelly D.
Page 119 and 120: Zhou Z., Wan S., Luo Y., 2007. Sour
Page 121 and 122: 5. FOCUSING ON ROOT-DERIVED RESPIRA
Page 123 and 124: oxidation of carbohydrates with sub
Page 125 and 126: 5.2.3. 14 C labeling and 15 N appli
Page 127 and 128: 5.3. Results 5.3.1. Aboveground and
Page 129 and 130: CO 2 efflux intensity (% of assimil
Page 131 and 132: N as a 100% reference, the respirat
Page 133 and 134: The distribution of N between shoot
Page 135 and 136: CO2 efflux from unplanted soil had
Page 137 and 138: and Gosz, 1986; Ross et al., 2001;
Page 139 and 140:
quantity of recently assimilated 14
Page 141 and 142:
5.4.5. Effect of growing stage on r
Page 143 and 144:
References Agrell D., Larsson C.M.,
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Wardle D.A., 1992. A comparative as
Page 147 and 148:
6. CONTRIBUTION OF ROOT RESPIRATION
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plant organs (roots) or soil compon
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6.2.2. Combined method: SIR+compone
Page 153 and 154:
the respiration response of microbe
Page 155 and 156:
Fig. 6 Partitioning obtained by mes
Page 157 and 158:
Fig. 9 Contribution of root and mic
Page 159 and 160:
The estimate of root and microbial
Page 161 and 162:
activity of the coarse roots, which
Page 163 and 164:
References Azcon-Bieto J., Lambers
Page 165 and 166:
Saglio P.H., Pradet A., 1980. Solub
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