carbon dioxide in watershed peter li professor, earth sciences tennessee technological university
TRANSCRIPT
Carbon Dioxide in Watershed
Peter Li
Professor, Earth Sciences
Tennessee Technological University
Stanford University, 2007
Who Put Most CO2 to the air?
Government policy?
Source:http://intellectualize.org/images/cartoon20050605.gif
What can happen if we don’t produce less CO2 ?
• Warmer temperature………
Source: http://j-walkblog.com/index.php?/weblog/2006/02/17/
What can happen if we don’t produce
less CO2 ?
• Glaciers and ice sheets in Artic will melt (Polar Bears hunt on ice sheets)
Source: www.ens-newswire.com/.../20070102_polarbears.jpg
What can happen if we don’t produce less CO2 ?
• Sea levels will rise. Instead of going to Myrtle Beach, you boys will head to Knoxville Beach for your spring break..
What can happen if we don’t produce
less CO2 ?
• More violent weather
Source: www.davidosler.com/flood.jpg
Cane Creek Watershed -Geographic Location
• 24.1 mi2
• Developed, Open Space 8.0%• Developed, Low Density 7.8%• Developed, Medium Density1.6%• Deciduous Forest 24.8%• Pasture 17.9%• Crops 36.8%• Others 3.1%
Source: Peter Li, 2007
Warming Trend Upper Cumberland Area
Minimum Temperature over 54 Years
y = 0.0001x + 43.601
-40
-20
0
20
40
60
80
100
0 5000 10000 15000 20000
day
Te
mp
era
ture
(F
ah
ren
he
it)
Source: Peter Li, 2007
Source: Peter Li, 2007
Our dedicated research assistant
Source: Peter Li, 2007
Source: Peter Li, 2007
CO2 Emission RateFigure 5. Soil Carbon Emission
-3500
-3000
-2500
-2000
-1500
-1000
-500
0
1950 1960 1970 1980 1990 2000 2010
Year
CO
2 (k
gC
/ha) CO2 Emission
Source: Peter Li, 2007
Drill for Winter Wheat
Qubit Soil CO2 Analyzer
Source: Peter Li, 2007
Land Use Change
Source: Peter Li, 2007
Conclusion
• Carbon Inventory is computed using GIS• Agricultural Practices have major impact
on carbon released to the air• Land use and cover change will pose a
major challenge to the carbon sequestration.
• Acknowledgement: NRCS, TTU, my dedicated students…Greg, Whitney, Derrick, Roshan, Drew….
http://www.greenpeace.org/international/news/naked-glacier-tunick-08182007