Abstract
This paper assesses the production, consumption and store of organic carbon in the agricultural system, including all products from agriculture, of China. An estimation showed that about 90% of carbon uptake by agricultural systems would be emitted or returned to the atmosphere by several types from 1990 to 2000, others remain in durable agricultural products and soil. Even though the fixation rate is getting lower, generally speaking Chinese agriculture is a “sink” but not a “source” in respect to the atmospheric CO2 and CH4 concentrations in both the current period and that after few decades. China's Soil stores 12% of the whole soil carbon in the World. Considering the different global warming potentials (GWP), an approach to the country budgets of CO2 and CH4 has been presented based on the measurements in rice paddies and in the Tibet and Inner Mongolia grasslands.
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Erda, L., Yunfen, L. & Yue, L. Agricultural C cycle and greenhouse gas emission in China. Nutrient Cycling in Agroecosystems 49, 295–299 (1997). https://doi.org/10.1023/A:1009791013163
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DOI: https://doi.org/10.1023/A:1009791013163