Abstract
By coupling the biogeochemical model with plant ecological model, a model was established to reveal the principle of the composite global warming potential transformation in the paddy ecosystem. Validation of the model with the observed data indicated that the model can simulate both the crop growth processes and emissions of CH4 and N2O accurately. Some numerical analyses were made to identify the impacts of different fertilizer application on assimilation of CO2 and emissions of CH4 and N2O, and the transformation principle of the composite global warming potential. Based on the results of the numerical analysis, the source-sink alternation of composite global warming potential in the paddy ecosystem was discovered, and some new conceptions of fertilizer index such as maximum-sink fertilizer, zero-emission fertilizer are put forward in this paper. The fertilizer scheme for Yangtze Delta was proposed to provide the important scientific basis for a sustainable agriculture in this region.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
IPCC, Climate Change 1994, Cambridge: Cambridge University Press, 1995, 73.
IPCC, Climate Change: The IPCC 1990 and 1992 Assessments, Cambridge: Cambridge University Press, 1992, 64.
Zhang Renhua, Sun Xiaomin, Zhu Zhilin et al., A remote sensing model of CO2 flux for wheat and studying of regional distribution, Science in China, Ser. D, 1999, 42: 325.
Xu Wenbin, Hong Yetang, Chen Xuhui et al., N2O emissions from regional agricultural lands-A case study of Guizhou Province, southwester Chinan, Science in China, Ser. D, 2000, 43: 103.
Xiong Xiaozhen, Shen Renxing, Wang Mingxing et al., Methane emission from rice paddy field of Taihu Area, Journal of Chinese Atmospheric Sciences(in Chinese with English abstract), 1999, 23(1): 9.
Li, C. S., Frolking, S., Frolking, T. A., A model of nitrous oxide evolution from soil driven by rainfall events: I. Model structure and sensitivity, Journal of Geophysical Research, 1992, 97(D9): 9759.
Li, C. S., Frolking, S., Frolking, T. A., A model of nitrous oxide evolution from soil driven by rainfall events: II. Model application, Journal of Geophysical Research, 1992, 97(D9): 9777.
Goudriaan, J., A simple and fast mumerical method for commutation of daily totals of crop photosynthesis, Agricultural and Forest Meteorology, 1986, 38: 249.
Penning de Vries, F. W. T., Jansen, D. M., TenBerge, H. F. M. et al., Simulation of Ecophysiological Processes of Growth in Several Annual Crops, Wageningen: Pudoc, 1989, 1–211.
Sigren, L. K., Lewis, S. T., Fisher, F. M. et al., Effects of field drainage on soil parameters related to methane production and emission from rice paddies, Global Biogeochemical Cycles, 1997, 11: 151.
Cao, M., Dent, J. B., Heal, O. W., Modeling methane emissions from rice paddies, Global Biogeochemical Cycles, 1995, 9: 193.
Li, C. S., Frolking, S., Crocker, G. J., Simulation trends in soil organic carbon in long-term experiments using the DNDC model, Geoderma, 1997, 81: 45.
Liu Jiandong, Zhou Xiuji, Yu Qiang, Numerical simulation of the CH4 and N2O emissions from rice oaddy fields in the Yangtze River Delta, Progress in Natural Science (in Chinese), 2001, 11(9): 960.
Liu Jiandong, Zhou Xiuji, Zhang Yu, Numerical simulation of methane emissions from rice paddy fields in the Yangtze Delta of China, ActaMeteorologicaSinica, 2001, 15(1): 1.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Liu, J., Zhou, X. & Yu, Q. Numerical analysis of the source-sink alternation of composite global warming potential of the paddy ecosystem in the Yangtze Delta. Sci. China Ser. D-Earth Sci. 46, 385–396 (2003). https://doi.org/10.1360/03yd9034
Received:
Issue Date:
DOI: https://doi.org/10.1360/03yd9034