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A Scheme for a Sustainable Urban Water Environmental System During the Urbanization Process in China Article
Huibin Yu, Yonghui Song, Xin Chang, Hongjie Gao, Jianfeng Peng
Engineering 2018, Volume 4, Issue 2, Pages 190-193 doi: 10.1016/j.eng.2018.03.009
Urbanization is a potential factor in economic development, which is a main route to social development. As the scale of urbanization expands, the quality of the urban water environment may deteriorate, which can have a negative impact on sustainable urbanization. Therefore, a comprehensive understanding of the functions of the urban water environment is necessary, including its security, resources, ecology, landscape, culture, and economy. Furthermore, a deep analysis is required of the theoretical basis of the urban water environment, which is associated with geographical location, landscape ecology, and a low-carbon economy. In this paper, we expound the main principles for constructing a system for the urban water environment (including sustainable development, ecological priority, and regional differences), and suggest the content of an urban water environmental system. Such a system contains a natural water environment, an economic water environment, and a social water environment. The natural water environment is the base, an effective economic water environment is the focus, and a healthy social water environment is the essence of such a system. The construction of an urban water environment should rely on a comprehensive security system, complete scientific theory, and advanced technology.
Keywords： Urbanization Urban water environment Water function Security system
An evolutionary note on smart city development in China Personal View
Ruizhi LIAO(1,2), Liping CHEN(3)
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6, Pages 966-974 doi: 10.1631/FITEE.2100407
Urbanization is an important indicator of a country’s degree of modernization. According to the World Urbanization Report by the Department of Economic and Social Affairs of the United Nations, more than 55% of the world’s population lives in cities, with this figure projected to rise to 70% by 2050 (United Nations, 2018). China’s urban population accounts for 60% of the national total in 2020, and is expected to reach a very ambitious rate, 80%, by 2050 (Deloitte, 2018). More people living in cities means more contests over limited urban resources, such as water, housing, transportation, education, and health care. To cope with the challenges brought by the urbanization trend, David Bollier from the University of Southern California raised a new idea for city planning: a comprehensive network and applications of information techno-logies (Bollier, 1998). IBM later echoed the idea and initiated its Smart Planet vision in 2008 (Palmisano, 2008). At that time, it was a brand new concept to empower and transform urban infrastructure, services, and management. Quickly afterwards, the smart city concept has been adopted by major cities throughout the world, and it has gradually evolved into a strategic choice by ambitious cities—aiming to compete for urban development, and to provide easy-to-use but efficient functionalities. In this paper, we discuss the essence of a smart city, investigate three driving forces of smart city development in China, summarize the key features of smart cities in China and other countries, and raise four big challenges that deserve careful thoughts on building future smart cities.
Keywords： 智慧城市；城市化；驱动力
Meng Zhaozhen
Strategic Study of CAE 2000, Volume 2, Issue 10, Pages 56-58
First of all, it is necessary carried out comprehensive national land planning and individual design from the high plane of harmonious sustainable development between man's production and natural environment.
The essence of cities at present should be an environment for human settlement and living. The relation between urbanization process and natural environment is neither to diametrically oppose nor to damage each other. The image of the city is not only buildings and streets but also a mix of cities, architecture and natural environment, i.e.an artificial beauty merging into nature. Man's bright future will be to put cities and buildings into green environment.
The most important thing for construction of scenic and historical places and city parks and gardens is now to protect the natural resources of the site. It is wrong to follow limelight from others. Each city should creates its own feature from local natural environment and cultural tradition.
Elegant landscape will mature slowly. Great thing always gets a late prosperous termination of an affair.
Keywords： urbanization process scenic and historical places urban parks and gardens
Coal to gas single cell protein-contribute to resolving the food crisis of China in future
Cao Chen,Yu Bo and Gu Weidong
Strategic Study of CAE 2015, Volume 17, Issue 3, Pages 107-112
It is predicted that the population of China will be growing to 1.45 billion， the urbanization rate will be 70 % by 2030， the total urban population will be exploded to 1 billion comparing with 0.7 billion urban population of 2013. As the continuously growing of population of China and urban population， China will face severe food crisis， especially the protein shortage problem in future. This paper presents a new theoretical model that by combining non-grid-connected wind power and coal to gas with bioengineering to produce single cell protein to contribute to resolving the food crisis. By combining non-grid-connected wind power and coal to gas with bioengineering to produce single cell protein can not only use the coal resource more efficiently， environmental friendly， but also produce nutrient rich protein for forage and human food.
Keywords： urbanization； food crisis； non-grid wind power； coal-to-gas； single cell protein
Urban Big Data and the Development of City Intelligence Review
Yunhe Pan, Yun Tian, Xiaolong Liu, Dedao Gu, Gang Hua
Engineering 2016, Volume 2, Issue 2, Pages 171-178 doi: 10.1016/J.ENG.2016.02.003
This study provides a definition for urban big data while exploring its features and applications of China’s city intelligence. The differences between city intelligence in China and the “smart city” concept in other countries are compared to highlight and contrast the unique definition and model for China’s city intelligence in this paper. Furthermore, this paper examines the role of urban big data in city intelligence by showing that it not only serves as the cornerstone of this trend as it also plays a core role in the diffusion of city intelligence technology and serves as an inexhaustible resource for the sustained development of city intelligence. This study also points out the challenges of shaping and developing of China’s urban big data. Considering the supporting and core role that urban big data plays in city intelligence, the study then expounds on the key points of urban big data, including infrastructure support, urban governance, public services, and economic and industrial development. Finally, this study points out that the utility of city intelligence as an ideal policy tool for advancing the goals of China’s urban development. In conclusion, it is imperative that China make full use of its unique advantages—including using the nation’s current state of development and resources, geographical advantages, and good human relations—in subjective and objective conditions to promote the development of city intelligence through the proper application of urban big data.
Keywords： Urban big data City intelligence Ternary space Construction emphases
Strategic Study of CAE 2000, Volume 2, Issue 5, Pages 90-90
Framework System and Path of Smart Resilient City Construction
Xu Xuesong, Yan Yue, Chen Xiaohong, Liu Xingbao, Su Yun, Tang Jiale, Peng Jianjun
Strategic Study of CAE 2023, Volume 25, Issue 1, Pages 10-19 doi: 10.15302/J-SSCAE-2022.05.027
In the context of extreme weather and frequent emergencies, strengthening the integration of resilient cities and smart cities will comprehensively enhance the resilience of cities and promote the modernization, digitalization, standardization, and sustainability of urban management. Smart resilient cities refer to integrating the new-generation information technology and dispatching systems of smart cities in city construction, thus to strengthen cities’ full-cycle resilience capacity to cope with major emergencies. This study elaborates the implication and development values of smart resilient cities, and analyses the challenges faced in smart resilient city construction. Moreover, it proposes a framework, ecology, pathways, and assessment indicators for smart resilient city construction, and clarifies the development elements and modes. Furthermore, we propose the following suggestions: (1) increasing public financial investment to upgrade infrastructure construction, (2) establishing sound emergency laws and regulations to improve social governance systems, (3) focusing on intelligent information technology construction to pursue technology-enabled development, and (4) playing a coordinating role of the government to promote multi-dimensional collaboration and governance, thereby driving the construction of smart resilient cities and supporting high-quality urban development.
Keywords： smart resilient cities digital transformation city management resilient city smart city
Optimization of Urban Spatial Structure Based on TOD Model
Lu Huapu, Liu Ruoyang , Zhang Yongbo , Fu Zhihuan
Strategic Study of CAE 2022, Volume 24, Issue 6, Pages 137-145 doi: 10.15302/J-SSCAE-2022.06.012
Traffic congestion and environmental pollution restrain the high-quality development of cities and the improvement of residents' living quality. A transit-oriented-development (TOD) model that integrates transportation with land use is key to solving the abovementioned problems. This study uses mechanism analysis to investigate the relationship between transportation and land use, analyzes the differences between TOD and conventional models regarding land use patterns and population distribution, and investigates the population distribution characteristics of the TOD model and its coupling relationship with transportation. Moreover, the current status and problems of TOD in China are analyzed through case study, indicating that the implications, development goals, and paths of TOD models vary for different scenarios. Additionally, a reasonable urban spatial structure is proposed comprising urban spatial structures at three levels: urban agglomerations, metropolitan and downtown areas, and rail transit stations and their surrounding areas. The basic ideas, planning and design principles, and implementation paths for the deep integration of the proposed structure with transportation are explored. Furthermore, we suggest that measures should be taken in terms of management planning, laws and policies, standards and specifications, benefit distribution, planning approval, incentive mechanism, and public participation, thereby providing support for TOD model application and for improving urban construction.
Keywords： urban spatial structure integration of transportation and land use transit-oriented development urban agglomeration metropolitan and downtown area rail transit station
A New Method of Assessing Environmental Flows in Channelized Urban Rivers Article
Xin-An Yin, Zhifeng Yang, Enze Zhang, Zhihao Xu, Yanpeng Cai, Wei Yang
Engineering 2018, Volume 4, Issue 5, Pages 590-596 doi: 10.1016/j.eng.2018.08.006
Assessing environmental flows (e-flows) for urban rivers is important for water resources planning and river protection. Many e-flow assessment methods have been established based on species’ habitat provision requirements and pollutant dilution requirements. To avoid flood risk, however, many urban rivers have been transformed into straight, trapezoidal-profiled concrete channels, leading to the disappearance of valuable species. With the construction of water pollution-control projects, pollutant inputs into rivers have been effectively controlled in some urban rivers. For these rivers, the e-flows determined by traditional methods will be very small, and will consequently lead to a low priority being given to river protection in future water resources allocation and management. To more effectively assess the e-flows of channelized urban rivers, we propose three e-flow degrees, according to longitudinal hydrological connectivity (high, medium, and low), in addition to the pollutant dilution water requirement determined by the mass-balance equation. In the high connectivity scenario, the intent is for the e-flows to maintain flow velocity, which can ensure the self-purification of rivers and reduce algal blooms; in the medium connectivity scenario, the intent is for the e-flows to permanently maintain the longitudinal hydrological connectivity of rivers that are isolated into several ponds by means of weirs, in order to ensure the exchange of material, energy, and information in rivers; and in the low connectivity scenario, the intent is for the e-flows to intermittently connect isolated ponds every few days (which is designed to further reduce e-flows). The proposed methods have been used in Shiwuli River, China, to demonstrate their effectiveness. The new methods can offer more precise and realistic e-flow results and can effectively direct the construction and management of e-flow supply projects.
Keywords： Environmental flow Urban river Channelized rivers River restoration
Du Xiangwan,Liu Xiaolong,Ge Qin,Jiang Lingling and Cui Leilei
Strategic Study of CAE 2017, Volume 19, Issue 4, Pages 119-123 doi: 10.15302/J-SSCAE-2017.04.019
The large amount of solid waste in China, if not properly handled, will cause serious environmental problems, lead to a waste of resources, and bring about adverse effects on society. Solid waste is a misplaced resource; thus, reducing or resource utilization solid waste to build a "no-waste society" will yield significant environmental, social, and economic benefits. Based on an analysis of significant existing problems hindering the construction of a "no-waste society" in China, along with feasibility studies, this paper suggests that it is necessary to promote the resource utilization of solid waste by piloting "no-waste city," from which to build a "no-waste society." Other strategic suggestions such as strengthening the top-level design, consolidating a foundation, defining stage objectives, and increasing policy support are also proposed in this paper.
Keywords： “no-waste society” “no-waste city” solid waste resource utilization strategic suggestions
Reasonable Scale of Megacity Central Area Based on Multivariate Data and a Traffic Perspective
Lu Huapu, Bai Zhuotong,Wu Zhouhao, Fu Zhihuan
Strategic Study of CAE 2022, Volume 24, Issue 6, Pages 146-153 doi: 10.15302/J-SSCAE-2022.06.013
The central area of a megacity, which features high-intensity development, large population density, and concentrated urban functions, demonstrates the most prominent urban problems. Addressing the urban malaise in megacities necessitates analyzing and demonstrating the reasonable scale of the megacity central area. This study proposes that commuting time is the core controlling factor determining the reasonable scale of the megacity central area. Combining with point of interest data of multi-type land use and the geographic information system data for street administrative division, we identified the current central urban areas of ten cities in China using big data analysis and the clustering method; their current traffic efficiencies were then evaluated based on path navigation data via web maps and mobile phone signaling data verification. Finally, demonstration results were presented through quantitative analysis. Our study shows that the current central areas of the ten megacities cannot satisfy residents' need for a proper commuting time; considering factors such as technological development and improvement in the level of governance, 13‒15 km is the upper limit of equivalent radius for the central area of a megacity.
Keywords： reasonable scale multivariate data central urban area megacity happiness
Investigation and practice of digital city to smart city
Li Chengming,Liu Xiaoli
Strategic Study of CAE 2013, Volume 15, Issue 5, Pages 4-7
First of all, the necessity of the authentic, unique and universal digital city geospatial framework construction was summarized in this paper. And then, the general idea, construction progress, effect and impact were introduced in detail. After that, according to the times development, technology progress and demand change, the new development opportunities, challenges and problems that the geospatial framework facing now were discussed. Finally, the construction goal and contents of spatiotemporal framework in the smart city stage were clearly stated in this paper, as well as the direction of technical breakthrough in the next step.
Keywords： digital city smart city cloud platform of spatiotemporal information
Dong Guoliang
Strategic Study of CAE 2006, Volume 8, Issue 6, Pages 7-13
Ten major difficulties facing city's sustained development are summarized, including too much land occupied, traffic jam, difficulty in parking, difficulty in walking, high energy consumption, low efficiency, poor public security, unlivableness, frequent traffic accidents and high investment in traffic facilities. The basic formulas for solving these difficulties are presented. For example, traffic supply density > traffic demand density is the basic formula for addressing traffic congestion. Only when the inequality becomes realistic can the traffic problem be soloved. Based on every basic formulas, a new unimpeded city mode is sublimated from many complex city mode schemes. Once the new mode in introduced, the ten major difficulties will be solved in an all-round way, and the city's livableness index will be doubled. For the sustainable developing city pattern, the centre position should not be locked at a certain place like in the case of playing chess, instead, the positions of every centre should be formed and vary along with the development just like in the case of playing a game of go. That is the doctrine of nonspecific city centre.
Keywords： city sustainable development traffic the doctrine of nonspecific city centre
On Geo-environment in the Sustainable Development of Chinese Cities
Chen Junyong
Strategic Study of CAE 2002, Volume 4, Issue 12, Pages 6-8
Urban geo-environment mainly concerns those regards in and around a city, such as the movement of earth crust and earth surface, conditions of hydrology, geology, geography and meteorology. The relevant studies on geo-disaster reduction and the influences resulted from human activities on the geo-environment are included as well. It is stressed in the paper that geo-environmental protection and management, as well as mitigation of the vulnerability of big cities again the geo-disaster are of significance to the sustainable development for Chinese cities.
Keywords： city sustainable development geo-environment geo-disaster reduction
The Suitable Approaches for Natural Gas Application in Eastern Chinese Cities
Jiang Yi
Strategic Study of CAE 2002, Volume 4, Issue 10, Pages 36-39
As one of the environment policies in China, natural gas will take the place of coal as the major energy source for eastern cities. However, due to the high cost of natural gas, the change in energy structure cannot be done by simply replacing coal with gas. The energy application mode should also change to match the change in energy structure. This paper lists most of gas applications such as power generation, space heating, chemical industry, public transportation, etc. Analysis has then been carried on to each type of application from both technical point and economic point. The conclusions are：
(a) Energy application mode depends on the energy supply structure. Current application is based on the energy system that coal takes the major part. It does not suitable if gas takes the place of coal.
(b) Comparing with electricity, natural gas is more convenient to balance the difference in daily peak and vale demand. This should be one of the important factors in energy planning.
(c) One of the most suitable applications is combined heat and power generation (CHP). However, “electrical demand first” should be the rule in design and operation of the system rather than “heat demand first” in current CHP policy. Gas driven CHP should take the rule of balancing the daily difference in electrical demand. During vale demand period, gas engine should be switched off, heat demand can then be met by thermal storage system. Air-conditioning system using low temperature heat source should be encouraged so as to run the CHP and to meet the utility peak load during summer.
(d) Except CHP system, district heating may not be suitable for space heating due to the large loss in transportation and distribution. Individual family boilers may be a better solution for heating when heat is generated from direct gas burning.
Keywords： natural gas applications CHP urban energy planning space heating
Title Author Date Type Operation
A Scheme for a Sustainable Urban Water Environmental System During the Urbanization Process in China
Huibin Yu, Yonghui Song, Xin Chang, Hongjie Gao, Jianfeng Peng
Journal Article
An evolutionary note on smart city development in China
Ruizhi LIAO(1,2), Liping CHEN(3)
Journal Article
Taking Warning from the Eastern Part Elegant Landscape Maturing Slowly——On Landscape Architectural Development in the Western Part of China
Meng Zhaozhen
Journal Article
Coal to gas single cell protein-contribute to resolving the food crisis of China in future
Cao Chen,Yu Bo and Gu Weidong
Journal Article
Urban Big Data and the Development of City Intelligence
Yunhe Pan, Yun Tian, Xiaolong Liu, Dedao Gu, Gang Hua
Journal Article
Planning the Development Blueprint of the Capital and Making Contribution to the Urban Modernization Construction-Beijing Urban Planning and Design Institute
Journal Article
Framework System and Path of Smart Resilient City Construction
Xu Xuesong, Yan Yue, Chen Xiaohong, Liu Xingbao, Su Yun, Tang Jiale, Peng Jianjun
Journal Article
Optimization of Urban Spatial Structure Based on TOD Model
Lu Huapu, Liu Ruoyang , Zhang Yongbo , Fu Zhihuan
Journal Article
A New Method of Assessing Environmental Flows in Channelized Urban Rivers
Xin-An Yin, Zhifeng Yang, Enze Zhang, Zhihao Xu, Yanpeng Cai, Wei Yang
Journal Article
A Preliminary Study on the Strategy of Construction a “No-Waste Society” by Piloting “No-Waste City” to Promote the Resource Utilization of Solid Waste
Du Xiangwan,Liu Xiaolong,Ge Qin,Jiang Lingling and Cui Leilei
Journal Article
Reasonable Scale of Megacity Central Area Based on Multivariate Data and a Traffic Perspective
Lu Huapu, Bai Zhuotong,Wu Zhouhao, Fu Zhihuan
Journal Article
Basic Formulas for Solving Ten Major Difficulties Amid City Development and the Doctrine of Nonspecific City Centre
Dong Guoliang
Journal Article
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