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从可持续发展理论出发,从经济、社会和生态三方面构建了房地产业可持续发展的评价指标体系,运用天津市近十年间的统计数据,基于主成分分析法建立房地产业可持续发展的综合评价模型,并运用于天津市房地产可持续发展状况的评价。阐述了主成分分析法在房地产业可持续发展评价中的应用,避免层次分析法等容易产生主观人为因素的影响,增强评价结果的客观性。 相似文献
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针对朝阳开发区造纸工业园控制性详细规划,采用层次分析法构建规划环境影响评价指标体系,在此基础上,分析朝阳开发区造纸工业园建设的可持续发展水平,为朝阳开发区造纸工业园建设环境决策的科学性提供技术依据。朝阳开发区造纸工业园区域发展规划实施后,规划各期区域整体可持续发展水平基本保持稳定,均为Ⅲ级,即可持续发展水平为中等。经济子系统和社会子系统可持续发展水平各期逐渐下降,而环境子系统可持续发展水平各期呈上升趋势。这说明,随着园区的进一步发展,其环境效益日益明显。 相似文献
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2000-2009年鄂南丘陵山区耕地集约利用变化分析 总被引:1,自引:0,他引:1
耕地集约利用是可持续发展的必然要求.从耕地集约利用内涵入手,通过构建耕地利用集约度的评价指标体系,采用主成分分析法对鄂南丘陵山区2000-2009年耕地集约利用进行了评价,并对耕地集约利用变化原因进行了分析.结果表明,10年间鄂南丘陵耕地的集约利用程度呈波动上升的趋势.目前阻碍鄂南丘陵山区耕地集约利用的因素主要为农田水利投入不足,占用耕地严重等,因此应加强耕地保护力度,积极进行耕地整治,加强水利基础设施建设,建立耕地环境质量安全体系. 相似文献
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运用层次分析法从综合环境效益、综合经济效益两个方面构建指标体系,建立研究模型,采取定性与定量相结合的方法,从包头市城市环境与经济发展的协调度方面确定包头市环境与经济协调发展的类型,对包头市自2001--2005年以来的城市环境与经济协调发展状况进行了分析与评价,并据此提出限制因子及可持续发展对策。 相似文献
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针对我国日益严峻的水环境安全问题,本文从水污染防治角度出发,依据影响我国水环境安全的关键污染问题,即水环境质量、水污染物排放、水环境风险,构建了水环境安全指标体系。利用相关分析法、主成分分析法,简化、优化评价指标体系。利用层次分析法与专家打分法,估算各指标权重,采集各指标数据对全国31个省(自治区、直辖市)2011—2013年的水环境安全状况进行评估。结果表明:该指标体系在一定条件和范围内是合理的,我国水环境安全大体呈西高中东低的空间分布,京津冀区域水环境安全评价值较低。"十三五"时期,京津冀地区应着重于降低主要污染物浓度,削减劣V类断面比例,提高水环境质量,海南、福建、广东等地区着力于减少农业等水污染物排放强度,湖南等地区则需要重点关注涉重企业的污染物排放。 相似文献
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本文立足于城市生态系统的结构与功能,探讨了系统内部资源、环境对人类社会经济活动的承载机制,总结了城市生态系统承载机制的特点,认为城市生态系统承载机制具有客观存在性、阈值性、相对性等特点,并从城市生态系统压力水平、约束水平、支撑水平等角度构建相应的定量研究指标体系,运用主成份分析法,提出了城市生态系统资源承载指数、环境约束指数以及综合承载指数。 相似文献
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《Resources Policy》2005,30(1):7-19
It is generally considered that the non-renewable nature of mineral resources will make them gradually depleted over time. However, in the perspective of development availability of mineral resources in a long-term depends not only on their currently available amounts but also on future potential mineral resources (e.g. those undiscovered and low-grade ores) and substitutive renewable resources. In addition, it is influenced by factors like technology and capital. These factors interact with each other. As a result, it is possible to make the sustainable development of mineral resources by appropriate coordination between these factors. A new concept of Degree of Sustainable Development of Mineral Resources (DSDMR) and its conceptual model are proposed in this paper in the viewpoints of system science and sustainable development to evaluate the ability of sustainable development of mineral resources for a mining city. DSDMR refers to the ability of meeting needs of present and future generations for mineral resources by their logical distribution and substitution. An indicator system and a fuzzy integrated judgment model, which involve factors of resources, economy, society, environments and intelligence, are presented. They are used to evaluate DSDMR of Huangshi city, which is the most ancient and yet one of the most important mining cities producing iron and copper in China. 相似文献
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本文通过建立番禺区可持续发展评价指标体系,运用主成份分析和独立性分析方法筛选出评价指标,确定各项指标的权重后,进行可持续发展评价.评价表明番禺区属平稳型可持续发展.通过辨析,找出制约地区发展的限制因子,提出可持续发展的对策. 相似文献
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当前生态文明指标体系研究和实践中,一方面生态文明指标体系和生态文明指数构建方法不尽相同,另一方面刻意追求统一的指标体系而忽视了不同行政层级间的差异性,对层级间指标衔接等问题缺乏考虑。依照生态文明内涵以及十八大尤其是十八届三中全会关于生态文明建设尤其是生态文明考核指标要求,提出各行政层级构建“橄榄型”生态文明建设指标框架体系。该指标体系强调国家的顶层宏观引导作用,并以市县级生态文明建设指标体系为基础,向上构建省级生态文明建设指标体系,向下构建乡镇级生态文明建设指标体系,体现“国家—省—市县—乡镇”之间的整体性、衔接性、协调性,真正反映生态文明建设是“自上而下引导力”和“自下而上推动力”的合力作用的结果,服务于我国生态文明建设的持续开展和长效管理。 相似文献
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城市土地资源可持续利用评价指标体系构建 总被引:2,自引:0,他引:2
土地资源可持续发展的核心内容是如何将一个概念转换成可操作的管理模式,即建立一套切实可行的指标体系。目前,我国关于土地可持续发展的指标体系评价处于探索阶段,还没有形成一套较成熟的评价方法。基于对于我国土地可持续发展的指标体系研究,构建了一套有关城市土地可持续利用的评价指标体系。 相似文献
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Definition of Management Zones for Enhancing Cultivated Land Conservation Using Combined Spatial Data 总被引:2,自引:0,他引:2
The loss of cultivated land has increasingly become an issue of regional and national concern in China. Definition of management zones is an important measure to protect limited cultivated land resource. In this study, combined spatial data were applied to define management zones in Fuyang city, China. The yield of cultivated land was first calculated and evaluated and the spatial distribution pattern mapped; the limiting factors affecting the yield were then explored; and their maps of the spatial variability were presented using geostatistics analysis. Data were jointly analyzed for management zone definition using a combination of principal component analysis with a fuzzy clustering method, two cluster validity functions were used to determine the optimal number of cluster. Finally one-way variance analysis was performed on 3,620 soil sampling points to assess how well the defined management zones reflected the soil properties and productivity level. It was shown that there existed great potential for increasing grain production, and the amount of cultivated land played a key role in maintaining security in grain production. Organic matter, total nitrogen, available phosphorus, elevation, thickness of the plow layer, and probability of irrigation guarantee were the main limiting factors affecting the yield. The optimal number of management zones was three, and there existed significantly statistical differences between the crop yield and field parameters in each defined management zone. Management zone I presented the highest potential crop yield, fertility level, and best agricultural production condition, whereas management zone III lowest. The study showed that the procedures used may be effective in automatically defining management zones; by the development of different management zones, different strategies of cultivated land management and practice in each zone could be determined, which is of great importance to enhance cultivated land conservation, stabilize agricultural production, promote sustainable use of cultivated land and guarantee food security. 相似文献