Abstract:

In order to evaluate the status of the agricultural ecological economic system of Jiangxi and provide the basis for the formulation of the countermeasures for the sustainable development of Jiangxi agricultural system, the author studied the emergy input of agro-ecological economic system of Jiangxi Province, and analyzed emergy input structure, its tracks of history of succession and the trend in development. The results showed that emergy input per year was 1.39×1023-1.69×1023 sej, renewable environmental resources made up 12.59%-16.38%, nonrewable environmental resources accounted for 0.35%-0.45%, organic energy and industrial support energy took up 7.48%-9.66% and 75.28%-77.38%. In industrial support emergy, fertilizer energy was the most (53.09%-78.92%), other industrial support emergy only held 21.08%-46.91%. The rate of labour emergy was up to 77.10%-86.42% in organic emergy, other organic energy only took up 13.58%-22.90%. Annual variation of each emergy input which accounted for the total emergy input was little. The organic energy still did not change the absolute status of labour emergy in twenty years’ change. Industrial support emergy input transformed from fertilizer emergy into electricity, diesel and mechanical emergy after twenty years’ evolution. High and new advanced technology emergy input was little, the system was traditional and conservative, the main power to maintain the system operation was labour, the system was still in the traditional operation stage.