[关键词]
[摘要]
文章运用能值理论,分析了宁夏荒漠化治理工程实施前后生态经济系统投入和产出的变化情况,评价了该地区荒漠化治理的生态经济效应。研究表明该地区能值产出量的增长幅度大于投入增长幅度。在能值投入结构方面,不可更新环境资源和可更新有机能投入量出现下降趋势。总能值产出结构向多元化发展。能值投资率和环境负载率呈先增加后减少的趋势,净能值产出率呈现先增后降再增长的趋势。系统的功能逐步完善,生态和经济向协调方向发展。
[Key word]
[Abstract]
On the basis of the theory of energy value, the research evaluated the ecological and economic effects of desertification control in Ningxia HUI Autonomous Region through analyzing the difference between the totalinput and output of ecosystem energy value. The results showed energy value of output increased much large than the input.In the structure of the input energy value，Non-renewable environment and renewable organic energy source inputs show a downward trend..When the structure of the total energy value output is diversified.Meanwhile, the energy value investment ratio and environmental loading ratio increase early and decrease later，the net energy output ratio increased again after early increase and later decrease.The harmonious system function which showed that the project’s ecological and economic purpose could be basically fulfilled.
[中图分类号]
[基金项目]
国家社科重大课题《我国西部林业生态建设政策体系实施效果评价研究方案》（11&ZD2042）
