摘要
以能值分析理论为基础,选取能够充分反映人地系统的主要能值指标,对甘肃少数民族地区1985～2005年人地系统的物质代谢和生态效率(即可持续性状态)进行了定量分析研究。结果表明:近21年来,甘肃少数民族地区的产出效率不断降低,经济发展水平较低;能值废弃率、环境负荷率均呈持续增长趋势;人口与环境的矛盾不断激化,可持续发展能力不断降低。最后,在定量分析评价的基础上对甘肃少数民族地区人地系统演变的趋势进行了简要预测及分析,并针对存在的问题,提出了相应的优化方向和措施。
Based on the methodlogy of energy analysis,we quantitative studied material metabolism and eco-efficiency in the minority area in Gansu Province from 1985 to 2005 by man-earth system＇s main value indicators.Results showed that in minority area in Gansu the output efficiency continued to decrease,economy developed slowly,energy waste and environmental loading ratio was sustained growth trends,population and environment conflicts continued to become serious,sustainability was at lower level.On the basis of sustainable development in a quantitative measure,the evolution of the man-land system trend was analyed and forecasted.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2010年第7期27-33,共7页
Journal of Arid Land Resources and Environment
基金
国家社会科学基金项目(06BSH001)
国家自然科学基金(40871061)资助
关键词
能值分析
人地系统
可持续发展指数
甘肃少数民族地区
emergy analysis
man-earth system
emergy-based sustainability index
minority area in Gansu
