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The authors assessed the effect of changes in rainfall amount and distribution …


Biology Articles » Bioclimatology » A Climate Change Scenario for Carbon Dioxide and Dissolved Organic Carbon Fluxes from a Temperate Forest Soil » Tables

Tables
- A Climate Change Scenario for Carbon Dioxide and Dissolved Organic Carbon Fluxes from a Temperate Forest Soil

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Table 1 Throughfall water for different time periods at the ambient, control roof, and drought roof plot in a temperate Norway spruce plantation at Solling, Germany

Throughfall water
Time period
Ambient plot
Control plot
Drought plot
_ L m-2 _
Drought period 1993
(1 Apr.–19 Sept.) 483 467
Rewetting period 1993
(20 Sept.–8 Oct.) 70 53 193
1993 (total) 1058 911 583
Drought period 1994
(1 Apr.–17 July) 250 245
Rewetting period 1994
(18 July–19 Aug.) 26 22 184
1994 (total)
1117
1057
965

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Table 2 Carbon dioxide fluxes for different time intervals at the ambient, control, and drought plots.{dagger}

CO2 fluxes
Time period
Ambient plot
Control plot
Drought plot
_ kg C ha-1 _
Drought period 1993 1872ab{ddagger} 2136a 1639b
(273) (227) (259)
Rewetting period 1993 341a 414a 504a
(90) (28) (91)
1993 (total) 3015a 3205a 2981a
(366) (233) (416)
Drought period 1994 1152a 1138a
(119) (229)
Rewetting period 1994 445a 1088b
(22) (149)
1994 (total) 3129a 4813b

(155)

(756)

{dagger} Mean with standard deviation in parentheses.

{ddagger} Significant variations (P = 0.05) in CO2 fluxes during the same period are indicated by different letters.

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Table 3 Dissolved organic C (DOC) fluxes for throughfall and seepage water at 10- and 100-cm mineral soil depths at the ambient, control, and drought plots.{dagger}

DOC
Ambient plot
Control plot
Drought plot
Level
1993
1994
1993
1994
1993
1994
_ kg C ha-1 yr-1 _
Throughfall 106 93 94 75 45 58
10-cm depth 166 176 99 105 91 135
(15) (24) (7) (13) (6) (10)
100-cm depth 40 46 28 34 34 30

(3)
(7)
(4)
(6)
(5)
(4)

{dagger} Standard deviation in parentheses.


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