Abstract:

In order to evaluate the emergy output structure and its trend of agro-ecological economic system of Jiangxi Province, and provide the basis for the formulation of the countermeasures for the sustainable development of Jiangxi agricultural system, the author studied the emergy output of agro-ecological economic system of Jiangxi Province, and analyzed emergy output structure, its tracks of history of succession and the trend in development. The results showed that emergy output of agricultural system in Jiangxi Province was 1.73×1023-1.82×1023 sej from 1990 to 2009, while crop production made up 54.01%-61.36%, animal husbandry accounted for 27.15%-29.78%, fishing took up 8.01%-12.81%, forestry holded 3.34%-4.11%; output emergy of grain and oil-bearing crops accounted 78.19%-79.18% for total output emergy of grain and oil-bearing crops accounted 78.19%-79.18% for total output emergy of crop production; pork products took up 74.5%-77.4% for total output emergy of animal husbandry; for 20 years average growth rate per year of output emergy of crop production was 0.85%, animal husbandry was 2.28%, forestry was 2.26%, fishing was 5.46%; through development of 20 years, industrial structure of system changed a lot, output emergy proportion of planting declined from 61.39% to 54.01%, while animal husbandry and fishing increased from 27.15%, 8.01% to 29.78%, 12.42%, the status of crop production began shaking, output emergy of grain and oil-bearing crops possed high proportion in crop production emergy, pork products took up dominant position of animal husbandry, the agricultural system was traditional and conservative according to the increasing trend of animal husbandry, animal husbandry would be the leading industry of agricultural system in Jiangxi Province, animal husbandry also presented strong momentum, agricultural system of Jiangxi might present the situation of top 3 kingdoms of crop production animal husbandry and fishing in future.