《喀什市城市生态系统能值分析》-毕业学术论文（设计）.docVIP

PAGE １ lw lw 　　　　　　　　　　　　　　　　　　　　　编号 学士学位论文 喀什市城市生态系统能值分析 学生姓名： 学 号：20090306002 系 部：化学与环境科学系 专 业：环境科学 年 级：2009级 指导教师： 完成日期：2013 年 月 日 中文摘要 能值分析为城市生态系统研究提供了定量的分析方法，并且对城市生态发展具有重要的意义。运用能值理论及其分析方法，以喀什市为研究区建立城市生态系统能值评价指标体系，重点选取能值自给率、输入能值、人均能值、能值密度、能值/货币比、电力能值比、环境承载力、能值可持续指数等能值综合分析指标，定量研究2010年研究区生态系统能值的动态变化规律。研究结果表明：喀什市自给能力较强，城市发展对外界资源的需求越来越小，居民生活水平和经济发展不断提高；但是经济发展强度和工业化水平不高，随着城市不可更新资源的开采，城市规模逐渐扩大，人口量增加，城市可持续能值量的减少，本地环境负荷增大，承载力持续下降。在此基础上对该城市生态发展提出几点建议。 关键词：能值分析；城市生态系统；喀什市 Emergy–based analysis of urban compound ecosystem in Kashgar Emergy theory brings about a quantitative method for compound ecosystem and it has being of great significance in evaluating sustainability about city.Applying the emergy analytical method ，thevariation of emergy structures from 2010 to 2011of Kashgar，as a urban compound eco-system was analyzed .Local emergy analysis was based on important emergy indicators such as purchased emergy used，self-supporting rate of emergy，emergy use per capita and so on.The results turned out that during almost 20 years，owning to local high self-supporting rate of emergy，external resources took smaller parts in urban development.Resident is life and economic growth continuously improved.With the local nonrenewable resources exploitation，population expansion this will result in the decrease of resources，so the environnmental capacity would be becoming lower.The sustianability of Kashgar progress was discussed.Finally some reasonable proposale for Kashgar were offered in this paper. Key words：emergy analysis；Kashgar ecosystem；Kashgar 目录 TOC \o 1-3 \h \z HYPERLINK \l _Toc327314141 中文摘要 PAGEREF _Toc327314141 \h 1 HYPERLINK \l _Toc327314142 Abstract PAGEREF _Toc327314142 \h 1 HYPERLINK \l _Toc327314143 引言 3 HYPERLINK \l _Toc327314144 1. 能值理论的基本理论和研究方法 .. 4 HYPERLINK \l _Toc32731414