SLIDE 1
The Malopeni flux site: carbon and water fluxes in a mopane - - PowerPoint PPT Presentation
The Malopeni flux site: carbon and water fluxes in a mopane - - PowerPoint PPT Presentation
The Malopeni flux site: carbon and water fluxes in a mopane -dominated savanna Alecia Nickless and Bob Scholes Ecosystem Processes and Dynamics, Natural Resources and the Environment, CSIR, South Africa High temperature throughout the year 50
SLIDE 2
SLIDE 3
High temperature throughout the year
5 10 15 20 25 30 35 40 45 50 09/09/2008 18/12/2008 28/03/2009 06/07/2009 14/10/2009 22/01/2010 Date Min and Max Temperature (Deg Celcius) Max Temp Min Temp
SLIDE 4
Half-hourly carbon fluxes
- 30
- 20
- 10
10 20 30
- 50
- 40
- 30
- 20
- 10
10 20 30 40 50 2009/02/06 2009/03/28 2009/05/17 2009/07/06 2009/08/25 2009/10/14 2009/12/03 2010/01/22
Soil Mositure (%) Net Ecosystem Exchange (mol m-2 s-1) Date
Net Ecosystem Exchange Soil Moisture
- 0.5
0.5 1 1.5 2 2.5 3 3.5 4 4.5 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00 00:00
Average Net Ecosystem Exchange (μmol m-2 s-1) Time
Dry Season
0.5 1 1.5 2 2.5 3 3.5 4 4.5 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00 00:00
Average Net Ecosystem Exchange (μmol m-2 s-1) Time
Wet Season
SLIDE 5
Half-hourly water fluxes
- 30
- 20
- 10
10 20 30
- 30
- 20
- 10
10 20 30 2009/02/06 2009/03/28 2009/05/17 2009/07/06 2009/08/25 2009/10/14 2009/12/03 2010/01/22
Soil Moisture (%) Water Flux (mmol m-2 s-1) Date
Water Flux Soil Moisture
- 0.15
- 0.1
- 0.05
0.05 0.1 0.15 0.2 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00 00:00
Water flux (mmol m-2 s-1) Time
Dry Season
- 0.5
0.5 1 1.5 2 2.5 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00 00:00
Water flux (mmol m-2 s-1) Time
Wet Season
SLIDE 6
Why is the Malopeni site leaking carbon?
Blue – Temperature Green – PAR/100 Black – CO2 flux
CO2 flux plotted along side PAR and temperature
SLIDE 7