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Published online 6 July 2006
Published in J Environ Qual 35:1554-1565 (2006)
DOI: 10.2134/jeq2005.0208
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
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Assessing Alternatives for Mitigating Net Greenhouse Gas Emissions and Increasing Yields from Rice Production in China Over the Next Twenty Years

Changsheng Lia,*, William Salasb, Benjamin DeAngeloc and Steven Rosec

a Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824
b Applied Geosolutions, LLC, Durham, NH 03824
c Climate Change Division, Office of Atmospheric Programs, U.S. Environmental Protection Agency, Washington, DC 20460


Figure 1
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  		Fig. 1. Comparison between observed and DeNitrification and DeComposition (DNDC)–modeled CH4 and N2O fluxes from a paddy rice field applied with midseason drainage in Wu County, Jiangsu Province, China, in 1995.

 

Figure 2
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  		Fig. 2. County-scale distribution of rice paddies in China.

 

Figure 3
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  		Fig. 3. Modeled nationally averaged methane emissions from rice paddies in China from 2000–2020 by management scenario.

 

Figure 4
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  		Fig. 4. Modeled nationally averaged carbon dioxide emissions from rice paddies in China from 2000–2020 by management scenario.

 

Figure 5
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  		Fig. 5. Modeled nationally averaged nitrous oxide emissions from rice paddies in China from 2000–2020 by management scenario.

 

Figure 6
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  		Fig. 6. Net effect of the management alternatives on nationally averaged global warming potential (GWP) of rice paddies in China from 2000–2020.

 

Figure 7
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  		Fig. 7. Impacts of management alternatives on average rice yield in China from 2000–2020.

 

Figure 8
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  		Fig. 8. Impacts of management alternatives on average water demand for rice production.

 

Figure 9
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  		Fig. 9. Baseline national global warming potential (GWP) by water basin from 2000–2020.

 




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