沿黄地区土地政策试点对区域发展的影响—— 基于断点回归的政策效益检验

土地试点政策是创新土地改革模式的重要方式,是乡村振兴背景下推动农村经济发展的重要动力.本文利用沿黄地区10个试点地2008?—?2018年面板数据,考察了土地试点政策实施对沿黄地区经济发展的影响.结果表明:(1)土地试点政策实施,对沿黄地区各流域经济发展影响效果存在空间差异,表现为中、下游区域对经济发展的带动作用弱于上...     

沿海地区中小城市环境空气质量预报模式的研究与应用

根据两年来的实际工作经验,探讨了沿海地区气象因素对环境空气质量的影响,并结合沿海地区气候特征及污染现状对影响环境空气质量的因素进行了研究分析,建立了适合于沿海地区中小城市环境空气质量预报模式,其预报准确率高。对沿海地区中小城市今后开展空气质量预报工作具有一定的指导意义。     

城市的发展与火灾防治

随着经济的快速增长，火灾将会成为一个突出的灾害问题。作为经济发展中心的城市，火灾危险因素大大增加，因此，在城市的发展和改造过程中，应当同时抓好防火安全保障体系的建设，大力发展消防科技，并应加强防火安全教育，以便把火灾危害减少到最低限度     

Urban environmental problems transition and environmental education towards sustainable cities in China

1　ＵｒｂａｎｉｚａｔｉｏｎａｎｄｔｒａｎｓｉｔｉｏｎｏｆｕｒｂａｎｅｎｖｉｒｏｎｍｅｎｔａｌｐｒｏｂｌｅｍｓＩｔｉｓｗｅｌｌｋｎｏｗｎｔｈａｔＣｈｉｎａｉｓｎｏｗｅｘｐｅｒｉｅｎｃｉｎｇｒａｐｉｄｕｒｂａｎｉｚａｔｉｏｎａｎｄｉｎｄｕｓｔｒｉａｌｉ?..     

屋顶绿化策略研究

随着中国城市建设的快速发展和人们对绿化水平要求的提高,屋顶花园作为新的绿化途径而得到了广泛的利用.文章首先介绍了屋顶绿化的历史;开展屋顶绿化的必要性,并且从七个方面介绍了屋顶绿化的意义;屋顶绿化的类型;屋顶绿化在世界发展的总趋势;最后介绍了屋顶绿化植物的选择,从六个方面介绍了佛甲草的优点.屋顶花园造就了新的生活方式,已成为现代家居生活必不可少的延伸,她为人们开辟了新的休憩娱乐活动场所,同时也加强了屋顶的隔热、御寒、隔声效果,起到了吸附飘尘和产生氧气的作用,具有良好的发展前景.     

西方资源型城镇研究的进展

以国际地理学界公认的权威英文学术期刊为主要资料来源 ,同时参阅了相关书籍 ,借此对西方有关资源型城镇研究的主要内容和理论进展进行了归纳和总结 ,对研究的总体状况进行了评述 ,并对我国资源型城镇的研究进行了初步探讨     

SBR技术的变型及组合工艺的研究与进展

概述与分析了液膜分离技术,重点介绍了液膜法处理含酚废水、含(NH4)2S废水、含氰废水的工艺和方法.     

Landscape eco-environmental research on littoral zone in China

Littoral zone is a special land/ landscape type. As an important kind of land resource in support, the use of littoral zone is vital to eastern coastal areas in China. And the research on littoral zone relates to the key theory of landscape ecology. Based on the theory of landscape ecology, the littoral zone was divided into four types: mud flat, sand beach, bench, and biological flat. The distribution of each type in China is pointed out. As a typical open system, littoral zone has six landscape ecological characteristics: (l) high sensitivity to disturbance; (2) distinct edge effect; (3) spatial aggregation of natural resources; (4) frequently spatial oscillation; (5) obviously spatial heterogeneity; and (6) noticeably spatial differentiation. Some proposals are also put forward on the land use and development of littoral zone for environmental protection and environmental mana qement.     

辽宁中部城市群大气污染分布及典型重污染的成因

通过分析2002年辽宁中部城市群的大气污染分布状况,将1月17~19日作为典型污染日,分析其污染状况及对应的气象条件,得出该地区典型重污染的气象条件是:风速小,日均风速小于2m/s,且都是局地风的影响;逆温严重,贴地逆温持续的时间长,大约持续到中午11时左右,逆温层的厚度大,5个城市逆温层的平均厚度大约在550~600 m,逆温层的强度大,5个城市的强度大约在0.9℃/hm~2.6℃/hm之间变化;从天气形势上来看,该地区冬季典型污染日主要受长白山小高压及东北地形槽的影响,大气状态非常稳定。     

Urban sharing in smart cities: the cases of Berlin and London

ABSTRACT

Addressing urban sustainability challenges requires changes in the way systems of provision and services are designed, organised and delivered. In this context, two promising phenomena have gained interest from the academia, the public sector and the media: “smart cities” and “urban sharing”. Smart cities rely on the extensive use of information and communications technology (ICT) to increase efficiencies in urban areas, while urban sharing builds on the collaborative use of idling resources enabled by ICT in densely populated cities. The concepts have many similar features and share common goals, yet cities with smart city agendas often fail to take a stance on urban sharing. Thus, its potentials are going largely unnoticed by local governments. This article addresses this issue by exploring cases of London and Berlin – two ICT-dense cities with clearly articulated smart city agendas and an abundance of sharing platforms. Drawing on urban governance literature, we develop a conceptual framework that specifies the roles that cities assume when governing urban sharing: city as regulator, city as provider, city as enabler and city as consumer. We find that both cities indirectly support urban sharing through smart agenda programmes, which aim to facilitate ICT-enabled technical innovation and emergence of start-ups. However, programmes, strategies, support schemes and regulations aimed directly at urban sharing initiatives are few. We also find that Berlin is sceptical towards urban sharing organisations, while London took more of a collaborative approach. Implications for policy-makers are discussed in the end.