Emergy Analysis of Agricultural Eco-economic Systems in Jiangxi Province of China

Based on the theory of emergy analysis created by H.T.Odum,the emergy flow of agricultural eco-economic systems in Jiangxi Province was quantitatively investigated.The results indicate that the solar emergy input,the solar emergy output,the net emergy output ratio,the environment loading ratio and the sustainability index in 2005 were 4.46×1022 sej,6.21×1022 sej,1.00,0.61 and 1.63,respectively.Jiangxi is now in the stage of transformation from traditional agriculture to modern agriculture.In order to promote the sustainable development of agriculture in Jiangxi,it was suggested that the emergy input and infrastructure construction of agriculture should be reinforced,which needed to increase the investment in agricultural science and technology,optimize the structure of the emergy input in the Eco-economic system and adjust the agricultural structure.