县域土地集约利用评价——以廊坊市固安县为例

我国城镇化发展过程中,用地粗放与人均耕地锐减之间的矛盾成为提出城镇土地集约利用的依据。本文以廊坊市固安县为例,结合实际情况,建立了城镇土地集约利用评价指标体系,并运用层次分析法对乡镇土地集约利用程度进行评价。评价结果表明,固安县各乡镇土地集约利用的整体水平并不高,乡镇土地利用的重点应放在土地的可持续利用方面,走集约式土地利用方向,能最大程度地提高乡镇土地利用效益。     

县域土地集约利用评价——以廊坊市固安县为例

我国城镇化发展过程中,用地粗放与人均耕地锐减之间的矛盾成为提出城镇土地集约利用的依据。本文以廊坊市固安县为例,结合实际情况,建立了城镇土地集约利用评价指标体系,并运用层次分析法对乡镇土地集约利用程度进行评价。评价结果表明,固安县各乡镇土地集约利用的整体水平并不高,乡镇土地利用的重点应放在土地的可持续利用方面,走集约式土地利用方向,能最大程度地提高乡镇土地利用效益。     

兵团建设用地集约利用综合评价研究

土地集约利用水平综合评价直接反映土地利用的集约程度。文章对兵团建设用地集约利用水平综合评价的方法进行了有益的探索,构建了一套土地集约利用水平综合评价的指标体系,从宏观上对兵团建设用地集约利用水平进行了分析和评价,并提出促进土地集约利用的建议。     

河南省城市土地集约利用时空差异研究

在城市土地集约利用内涵解析的基础上,从土地利用强度、经济效益、社会效益和生态环境效益4个方面构建了评价指标体系,运用熵值法测度和分析了河南省城市土地集约利用空间格局及其时空变化特征。结果显示:土地利用的经济效益是影响城市土地集约度最主要影响因素;城市土地集约利用水平空间分布表现明显的区域差异性;土地利用集约度总体上呈上升趋势,但上升幅度表现显著的城市差异性。     

区域建设用地节约集约利用评价研究 ——以云南省普洱市为例

以普洱市十县(区)第三次全国国土调查成果以及第二次全国土地调查以来10年间年度变更调查数据中建设用地的变化情况为研究对象,采用定性分析和定量评价方法分析土地利用与国民经济发展的协调程度以及建设用地节约集约利用水平,揭示普洱市节约集约利用总体情况和区域差异,并在此基础上提出节约集约利用土地的建议,目的是为国土空间规划编制...     

土地集约利用与碳排放脱钩关系分析:以京津冀地区为例

土地利用变化是碳排放的增长的重要来源之一,土地集约利用作为转变土地粗放利用方式的重要手段,理清土地集约利用与碳排放的关系对“双碳”目标的实现具有重要意义。在对京津冀地区2002-2017年土地集约利用水平和碳排放核算基础上,运用标准差椭圆法、脱钩理论、地理探测器等方法,对其时空演变、相互关系及影响因素进行了研究。研究结果显示：（1）土地集约利用与碳排放标准差椭圆分布格局均为东北-西南走向,其中土地集约利用空间上呈现东高西低、南高北低的格局;62%的城市碳排放量已出现下降趋势;（2）京津冀地区土地集约利用与碳排放脱钩关系已处于较为理想的强脱钩和弱脱钩状态;（3）各驱动因子交互作用较为显著,交互后均优于单因子影响力,其中经济投入水平与土地投入水平因素的交互影响程度最高,土地投入水平内部因素交互后驱动作用最弱。研究结论:京津冀地区土地集约利用与碳排放已处于较为理想的强脱钩和弱脱钩状态, 在未来的土地利用过程中应处理好影响碳排放增长的高驱动因子与一般因子之间的关系。     

基于AHP和特尔斐方法的工业园区土地集约利用评价——以甘肃西峰工业园区为例

工业园区已成为地区经济发展的重要领域与地方工业发展的重要载体。以甘肃西峰工业园区为例,建立工业园区土地集约利用评价体系,利用理想值比例推算法对各指标进行无量纲化处理,采用层次分析法(AHP)和特尔斐方法确定指标权重,采用集约度综合分值法对甘肃西峰工业园区土地集约利用程度进行评价。结果表明,甘肃西峰工业园区土地集约利用度居于集约利用水平,土地利用强度不大,工业用地投入产出效益较低,土地利用水平处于粗放利用到集约利用的转型期。最后提出了工业园区土地集约利用的政策建议。     

基于AHP和特尔斐方法的工业园区土地集约利用评价——以甘肃西峰工业园区为例

工业园区已成为地区经济发展的重要领域与地方工业发展的重要载体。以甘肃西峰工业园区为例,建立工业园区土地集约利用评价体系,利用理想值比例推算法对各指标进行无量纲化处理,采用层次分析法(AHP)和特尔斐方法确定指标权重,采用集约度综合分值法对甘肃西峰工业园区土地集约利用程度进行评价。结果表明,甘肃西峰工业园区土地集约利用度居于"集约利用"水平,土地利用强度不大,工业用地投入产出效益较低,土地利用水平处于粗放利用到集约利用的转型期。最后提出了工业园区土地集约利用的政策建议。     

大城市周边农村居民点土地集约利用评价——以北京市昌平区为例

探索具有现状分析、问题诊断、模式评价的土地集约利用评价技术是土地集约利用管理的重要内容。本文以北京市昌平区抽样调查的15个村庄为例,构建了区域农村居民点土地集约利用水平评价的指标体系,然后运用层次分析法(AHP)对各评价指标赋权重,最后通过加权求和计算出各村的农村居民点土地集约利用综合分值,并依据此分值对昌平区15个村庄的集约利用水平做出了科学而客观的评价,评价结果表明该区农村居民点土地集约利用水平存在着相当大的空间差异。同时,本文针对评价结果提出了提高其土地集约利用水平的建议,并指出了本文的不足之处。     

区域经济发展对土地利用变化的响应

区域经济发展是土地利用变化的主要驱动力,其研究对于高效合理利用土地具有很重要的现实意义。本文以河北省永清县为研究对象,根据当地实际情况,通过SPSS13.0分析软件和Excel图表工具,对社会经济指标数据和土地利用数据进行了相关分析,并分别从产值、产业结构、居民收入和城镇化水平等方面分析了对土地利用变化的响应。研究结果表明,除主要经济指标与土地利用变化存在显著性相关外,在一定程度上表现出永清县土地正在向集约利用方向迈进,同时也存在建设用地对城市化水平影响有限以及城市化水平过低等问题。文章通过分析对土地利用变化产生影响的主要社会经济影响因子,为区域社会经济发展与土地利用有效挂钩提供良好途径。     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.