江西省农业生态经济系统的能值投入分析  

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

作　　者：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23期214-220,共7页Chinese Agricultural Science Bulletin

基　　金：科技部公益性研究项目(2007-4-15)

摘　　要：为了客观评价江西农业生态经济系统的现状,为江西农业系统可持续发展的对策制定提供依据,笔者运用能值理论和能值分析方法,研究江西省农业生态经济系统的能值投入,分析能值投入结构及演替的历史轨迹和发展趋势。结果表明:每年投入能值1.39×1023～1.69×1023sej,其中可更新环境资源、不可更新环境资、有机能、工业辅助能值分别占12.59%～16.38%、0.35%～0.45%、7.48%～9.66%和75.28%～77.38%;工业辅助能值中,化肥能值最大(53.09%～78.92%),其他工业辅助能值只占21.08%～46.91%。有机能中劳力能值比例高达77.10%～86.42%,其他有机能仅为13.58%～22.90%;各种能值投入量占该年能值投入总量的比例的年变化不大,有机能在20年变化中仍然没有改变劳力能值在有机能值总量的绝对地位,工业辅助能值投入经过20年的演变,能值的投入逐渐由化肥能值向电力、柴油和机械能值转化;高新技术能值投入不多,系统具有较强的传统性和保守性,维持系统运转的主要动力还是劳力,系统仍处于粗放型的传统经营阶段。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 1.39×10 23-1.69×10 23 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.

关 键 词：能值 能值分析 生态经济系统 农业 江西省 

分 类 号：F062.2[经济管理—政治经济学]