天祝县生态经济系统的能值分析  

Emergy analysis of Tianzhu ecological-economic system

作　　者：汤萃文[1,2] 苏研科[1] 陈银萍[1,2] 杨国靖[3] 王谦[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070 [2]寒区旱区水资源综合利用教育部工程研究中心,兰州730070 [3]中国科学院寒区旱区环境与工程研究所,兰州730000

出　　处：《生态学杂志》2011年第2期343-348,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(30500075和30970490);中国科学院知识创新工程重要方向项目(KZCX2-YW-QN310);兰州交通大学"青蓝"人才工程基金计划项目(QL-08-04A)资助

摘　　要：能值理论为生态经济系统结构和功能的研究提供了一种新的理论和分析方法。本文对甘肃省天祝县生态经济系统进行了能值分析,通过计算天祝县总的能值用量、能值货币比率、能值自给率、人均能值用量、能值密度等指标,定量描述了天祝县生态经济格局和发展状况的总体特征,并与其他国家和地区进行了比较。结果表明:天祝县2008年总的能值用量为2.38×1021sej,人均能值用量只有1.03×1015sej,远远低于其他国家或地区;能值自给率达88.87%,而能值货币比率为3.41×1013sej.$-1,二者均高于国内沿海经济发达的省份。说明天祝县的经济发展是建立在本地资源过度依赖和高强度的利用基础之上,生态经济系统是一封闭的、不具活力的、不可持续的系统。据此提出了一系列促进区域可持续发展措施和建议。Emergy theory provides a new theory and method to study the structure and function of ecological-economic systems. In this paper,an emergy analysis was performed on the ecological-economic system of Tianzhu County,Gansu Province,aimed to quantitatively describe the overall characteristics of ecological-economic pattern and its development status of the County,and give comparison with other countries and districts. The main emergy indices calculated were total emergy consumption,emergy/money ratio,emergy self-sufficiency ratio,emergy per capita,and emergy per unit area. In 2008,the total amount of emergy of Tianzhu County was 2.38×1021 sej,and the emergy consumption per capita was 1.03×1015 sej,far lower than those of other countries and districts; while the emergy self-sufficiency rate was 88.87%,and the emergy/money ratio was 3.41×1013 sej·$-1,being higher than those of the cities in coastal developed provinces of China. These results indicated that the economic development of Tianzhu County was based on the over-reliance on and the excess utilization of local resources,and that the ecological-economic system of the county was a closed,inactive,unsustainable system. A series of measures and suggestions were given to promote the sustainable development of Tianzhu County.

关 键 词：能值理论 生态经济系统 可持续发展 天祝县 

分 类 号：F127[经济管理—世界经济] F205