中国27省4直辖市二元经济及发展水平研究

运用二元经济结构理论、经济规模理论和可持续发展理论等,采用区域比较法和个量与总量结合法,总量与均量结合法,定性与定量结合法分析了我国27省4直辖市的二元经济结构变化特征、总量经济规模和均量经济规模的大小,找出了三者之间的相互影响和相互制约关系并提出了促进经济协调发展的对策.     

重庆市秀山县老田庄锰矿地质特征及矿床成因分析

南华系下统大塘坡组第一段为本区的含锰岩系,其厚度及岩性组合与锰矿有着直接的关系。本区锰矿属沉积菱锰矿矿床类型,具有多层含矿性。古地理、古构造对锰矿沉积的控制作用,在还原环境的条件下,沉积了一套以含炭质水云母页岩为主的黑色含锰岩系地层,锰矿即产于含锰岩系地层之底部。     

Impacts of land-use change on ecosystem service value in Changsha, China

Changsha, a typical city in central China, was selected as the study area to assess the variations of ecosystem service value on the basis of land-use change. The analysis not only included the whole city but also the urban district where the landscape changed more rapidly in the center of the city. Two LANDSAT TM data sets in 1986 and 2000 and land use data of five urban districts from 1995 to 2005 were used to estimate the changes in the size of six land use categories. Meanwhile, previously published value coefficients were used to detect the changes in the value of ecosystem services delivered by each land category. The result shows that the total value of ecosystem services in Changsha declines from 1 009.28 million per year in 1986 to1 009.28 million per year in 1986 to 938.11 million per year in 2000. This decline is largely attributable to the increase of construction land, and the conversion from woodland and water body to cropland to keep the crop production. In the five districts, there is $6.19 million decline in ecosystem service value between 1995 and 2005. Yuelu District has the highest unit ecosystem service value while Yuhua District has the lowest one. This may be attributed to the greater conversion from cropland and grassland to woodland and water body with the increase of construction land in Yuelu District. It is suggested that the increase rate of construction land should be controlled rigorously and the area of woodland and water body should be increased or at least retained in the study area.     

Wisdom City Management System Based on Internet-of-Things Technology

The city management model of China was extensive administrative management model from the beginning. From the end of the 20th century to the first decade of 21st century, China began the systematic construction and through software system, realizes digital and automatic city management system construction. At present, with the perfection and wide applying of internet-of-things technology, it is possible to build the wisdom city management system based on internet-of-things technology. Wisdom city management system is the upgrading city management system of the digital city and the automatic city. This paper, from the basic concept and basic application of internet-of-things technology, discusses the overall structure, application and value, significance and risk of the wisdom city management system. From the perspective of the work mechanism of city management enforcement department, and based on the internet-of-things technology, this paper probes into the wisdom city management system with the “cover to the surface, monitoring to the line, and control to the point” information acquisition, scheduling and decision-making. It also expounds the function and content in detail from the percep-tion layer, the transport layer, support layer and application layer of the wisdom city management system. It pro-vides the actual maneuverability reference of the construction of wisdom city management system based on the internet-of-things technology.     

城市热岛效应的遥感和地理信息系统方法

以哈尔滨市为例,对遥感和地理信息系统相结合提取城市热力场信息的方法进行了研究．在地理信息系统ArcView中通过对遥感图象进行密度分割和多光谱合成,得到了能够较好反映城市热力场信息的。TM632合成图象,并通过B6波段进行温度反演,得到了哈尔滨市的地表辐射温度专题图．在地理信息系统ArcView中将该专题图与其他专题图进行叠加分析、统计分析等,不仅可以显示出市区热力场空间分布格局,还可以得到影响热岛效应的各因素及其与城市热岛效应的关系,为城市综合评价和生态建设提供依据．     

城市化与工业化的因果关系——以安徽省宿州市为例

利用安徽省宿州市1999—2010年的统计数据,运用塞尔奎因-钱纳里标准法分析其城市化与工业化发展阶段,采用协整检验、Granger因果检验对其城市化与工业化的因果关系进行实证研究。结果表明：1）宿州工业化和城市化水平低于全国平均水平,均处于初期发展阶段;2）宿州城市化与工业化有高度相关关系,城市化滞后于工业化;3）宿州当前城市化发展是工业化发展的Granger原因,加快城市化发展有利于促进工业化水平提高;4）宿州城市化水平与第二产业增加值比重和第三产业增加值比重具有长期稳定的协整关系,但与非农就业人口比重不存在长期稳定的均衡关系;5）宿州城市化水平与第二产业增加值比重和第三产业增加值比重的弹性系数分别为0.21和0.86,说明其城市化水平对第三产业的拉动作用要比对第二产业的拉动作用更大一些。因此宿州市应促进人口向中心城区的集聚,发挥城市化对工业化的促进作用。     

基于径向基网络的燃气短期负荷预测

用径向基（RBF）神经网络对城市燃气系统进行短期负荷预测。在对鞍山市燃气系统的历史负荷数据进行短期预测结果表明，所建立的RBF神经网络模型具有较高的预测精度。     

重庆市荆襄式磷矿地质特征及成矿规律分析

重庆市荆襄式磷矿主要分布在渝东北的城口—巫山一带。评述了该类磷矿地层、构造、成矿特征等,总结了荆襄式磷矿成矿规律,为重庆市磷矿资源找矿及预测提供参考。     

大同市城市交通发展战略的研究

城市交通系统作为城市发展目标落实的重要保障条件,已从被动的“配套”观念逐步走向紧密衔接、协同共进的发展阶段,建立土地利用与交通运输系统协调发展的机制正在成为规划与决策的重要取向.通过对大同市当前和今后交通发展的时代要求等宏观层面的分析研究,明确大同市城市交通发展的背景、条件和制约,确定城市交通发展的指导思想、战略目标和政策措施.     

基于生态优先的城市规划和设计

在我国快速推进的城市化过程中,我们必须面对一系列的环境压力. 而要阻止生态环境的进一步恶化,人们需要改变以往的发展模式和思路. 在城市规划和设计中,实行生态优先的原则,优先考虑地区、城市和区域的生态要素,进行规划和设计前的评估,将生态因素作为规划和设计的前提,以保护城市生态环境.