城市边缘区的土地利用问题研究

随着我国城市化进程的加快,城市边缘区面临着城市郊区化和农村城市化的双重压力。城市边缘区的土地利用具有空间分布层次性用地拓展扩散性、土地利用多样性和土地集约化差异性等特点。目前存在缺乏统规划、工业用地比例过高、土地利用低效基础设施落后及城乡分治等问题,应通过统规划、整合土地资源、完善基础设施及加强监管,实现土地的集约利用与可持续发展。     

转型发展中的深圳城市用地分类标准修订

城市用地分类标准是城市规划编制与管理的核心工具,对其进行修订不仅仅是对城市规划技术的优化与完善,更是适应城市转型发展的复杂过程。在反思历版深圳城市用地分类标准存在的问题、剖析城市用地分类的作用、地位、内涵和体系的基础上,深圳首次构建了\"规划用地分类+开发控制规则\"的城市用地分类体系。深圳用地分类由单一标准向标准体系、技术分类向制度体系逐步转型,有利于促进用地的合理开发、建设、使用及用途变更,保障城市规划的灵活性和适应性。     

Underground space planning in Helsinki

This paper gives insight into the use of underground space in Helsinki,Finland.The city has an underground master plan(UMP) for its whole municipal area,not only for certain parts of the city.Further,the decision-making history of the UMP is described step-by-step.Some examples of underground space use in other cities are also given.The focus of this paper is on the sustainability issues related to urban underground space use,including its contribution to an environmentally sustainable and aesthetically acceptable landscape,anticipated structural longevity and maintaining the opportunity for urban development by future generations.Underground planning enhances overall safety and economy efficiency.The need for underground space use in city areas has grown rapidly since the 21 st century;at the same time,the necessity to control construction work has also increased.The UMP of Helsinki reserves designated space for public and private utilities in various underground areas of bedrock over the long term.The plan also provides the framework for managing and controlling the city's underground construction work and allows suitable locations to be allocated for underground facilities.Tampere,the third most populated city in Finland and the biggest inland city in the Nordic countries,is also a good example of a city that is taking steps to utilise underground resources.Oulu,the capital city of northern Finland,has also started to ‘go underground'.An example of the possibility to combine two cities by an 80-km subsea tunnel is also discussed.A new fixed link would generate huge potential for the capital areas of Finland and Estonia to become a real Helsinki-Tallinn twin city.     

Underground space planning in Helsinki

This paper gives insight into the use of underground space in Helsinki, Finland. The city has an undergroundmaster plan （UMP） for its whole municipal area, not only for certain parts of the city. Further, the decision-making history of the UMP is described step-by-step. Some examples of underground space usein other cities are also given. The focus of this paper is on the sustainability issues related to urbanunderground space use, including its contribution to an environmentally sustainable and aestheticallyacceptable landscape, anticipated structural longevity and maintaining the opportunity for urbandevelopment by future generations. Underground planning enhances overall safety and economy efficiency.The need for underground space use in city areas has grown rapidly since the 21st century; at thesame time, the necessity to control construction work has also increased. The UMP of Helsinki reservesdesignated space for public and private utilities in various underground areas of bedrock over the longterm. The plan also provides the framework for managing and controlling the city＇s underground constructionwork and allows suitable locations to be allocated for underground facilities. Tampere, the thirdmost populated city in Finland and the biggest inland city in the Nordic countries, is also a good exampleof a city that is taking steps to utilise underground resources. Oulu, the capital city of northern Finland,has also started to ＇go underground＇. An example of the possibility to combine two cities by an 80-kmsubsea tunnel is also discussed. A new fixed link would generate huge potential for the capital areasof Finland and Estonia to become a real Helsinki-Tallinn twin city.
2014 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting byElsevier B.V. All rights reserved.