江西省农业生态经济系统的能值指标分析  

Emergy Index Analysis of Agro-ecological Economic System of Jiangxi Province

作　　者：王卫文[1] 曹福祥[1] 康文星[1,2,3] 沙甲先[1] 何介南[1] 

机构地区：[1]中南林业科技大学生命科学与技术学院,长沙410004 [2]南方林业生态应用技术国家工程实验室,长沙410004 [3]国家野外科学观测研究站,湖南会同418307

出　　处：《中国农学通报》2011年第29期208-213,共6页Chinese Agricultural Science Bulletin

基　　金：科技部公益性研究项目(2007-4-15)

摘　　要：为了对江西省农业生态经济系统的演变趋势做出适当判断,对系统的可持续发展提出具体对策,在研究江西省农业生态经济系统输入和产出能值的基础上,构建各种能值的结构指标,对江西省农业生态系统的结构、功能、效率和发展趋势进行分析。结果表明:购买能值投入率较高,有机能投入过多,工业辅助能值投入太少,系统处于自我维持的生产状态,具有较强的传统性和较高的保守性;净能值出产率较低,系统处于劳力密集型,集约化程度低,生产效率不高的粗放型阶段;环境负载率较大,且处于增长趋势,表明系统在能值利用技术上不断提高,同时面临的环境压力也越来越大;系统能值可持续发展指标为0.176～0.225,远小于1,系统是典型的消费型生态系统,产出的能值是消耗较多的资源获得。江西省农业系统应优化能值投入和产出结构,提高能源利用效率和生产效率,加大科技成份的投入,注重系统的协调性和整体性以及生态经营的合理性,把现代高新技术与传统农业技术的精华相结合,改变传统的粗放型经营方式,向现代科学技术型、高度集约型和高效益型转变。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,based on the studying input emergy and output emergy of agro-ecological economic system of Jiangxi,the author constructed the structure of various emergy index and analyzed the structure,function,efficiency and development trend of agro-ecological system in Jiangxi Province.The results showed that the rate of emergy input was higher organic emergy much more,industrial auxiliary emergy was little,system in self sustaining production status with strong tradition and higher conservative.The rate of net emergy output was low,the system was in the stage of labor-intensive,low intensive degree,and low production efficiency extensive;the environmental loading ratio was in larger growth,which indicated that the system rose ceaselessly on emergy using technology and the environmental pressure were getting bigger and bigger,sustainable development index of system emergy was 0.176-0.225 which was far less than 1,the system was a typical consumption-based ecological system,output emergy obtains by consuming more resources.Agricultural system of Jiangxi should optimize the emergy input and output structure,improve energy efficiency and production efficiency,increase the devotion of technology ingredients,pay attention to the coordination and unity and system of ecological management of rationality,combining the modern high-tech with the essence of traditional agricultural technology,change the traditional extensive mode to modern scientific technology,highly intensive and high efficiency.

关 键 词：能值指标 能值投入率 净能值出产率 环境负载率 可持续发展指标 

分 类 号：F062.2[经济管理—政治经济学]