Chongqing Planning Research Center

Chongqing, China

Chongqing Planning Research Center

Chongqing, China
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Zhou X.,Chongqing Planning Research Center | Chang Y.,Chongqing Planning Research Center
Journal of Environmental Accounting and Management | Year: 2014

Eco-culture is essentially a social ideology which promotes coexistence and mutual prosperity between mankind and nature, in order to realize cohesive and harmonious development of ecology, economy and society. Based on the analysis of essence of eco-culture, this paper reveals a mechanism that eco-culture influenced on urban development and analyzes its phenomena. We find that eco-culture is the driving force and soul of urban ecological development, which has penetrated into every aspect of urban society, economy, planning and construction. Eco-culture can not only contribute to resolve ecological crisis, but also facilitate the resource-saving and environment-friendly society development, also promotes the circular economy development, and plays an important role in constructing ecological physical space. © 2014 L & H Scientific Publishing, LLC. All rights reserved.

Chen C.D.,CAS Chongqing Institute of Green and Intelligent Technology | Jia Z.Y.,CAS Chongqing Institute of Green and Intelligent Technology | Jia Z.Y.,Southwest University | Wu S.J.,CAS Chongqing Institute of Green and Intelligent Technology | And 4 more authors.
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2017

Landscape connectivity has been defined as the degree to which landscapes facilitate or impede the movement of species between habitat patches. It is a critical concern for the maintenance of integrity and continuity of landscape structure and ecological processes. With global environmental degradation, habitats loss and natural area fragmentation is inevitable. As such, studies on landscape connectivity are the focus of applied landscape ecology. A well-connected ecological network is believed to facilitate energy and matter fluxes, species dispersal, genetic exchange, and many other ecological processes, and contribute to the overall maintenance of ecosystem stability and integrity. This paper presents a review of the literature on the application of landscape connectivity based on 240 publications from 1999 to 2015, in which we evaluated Chinese state-of-the-art achievements and developments on this topic. The literature review and data analysis based on the CNKI and Web of Science databases, were organized into eight categories using bibliometrics: number of published papers per year, source journals, research institutions, study areas, research objectives, landscape types, landscape scales and study methods in connectivity studies. We found a exponential increase in the number of publications from 1999 to 2015, especially after 2008. The majority were published in the journals “Acta Ecologica Sinica,” “Chinese Journal of Ecology,” and “Urban and Landscape Planning.” Eighteen major research organizations from Beijing, Nanjing and other eastern areas of China, contributed 43.75% of the total papers. The main study areas were also concentrated in eastern region, then the far west, with the least in central region. Providing pragmatic solutions for landscape planning was the main research objective, and only 11.25% of papers targeted species conservation, usually regarding endangered or rare species that are well known to the public, such as the giant panda. Artificial landscapes, including urban or rural landscapes were the major target of research; whereas, 27.92% of papers were about natural landscapes. The spatial extent of the study area was less than 5000 km2 in 72.5% of the studies. The spatial resolution almost varied between 6 m and 90 m pixel values, with the median being 30 m. The predominant analytic approach was functional connectivity(63.75%), followed by structural connectivity(36.25%). We identified 14 methods measuring connectivity. The four most utilized methods were least-cost analysis, graph-based functional connectivity indices, network structural indices, and landscape pattern metrics. In addition, applying a combination of various methods has become a trend in the recent connectivity application studies. Expert opinions and previous research results were typically used to evaluate the resistance values of the landscape matrix and the distance thresholds. However, different experts in isolation may assign different values and therefore affect the reliability of evaluation. Few analyses in China obtained these important parameters by means of field data or empirical study for a specific organism. We discuss problems and prospects of applying landscape connectivity in China to promote future research and application. © 2017, Ecological Society of China. All rights reserved.

Yang Z.,Beijing Normal University | Zhou X.,Beijing Normal University | Zhou X.,Chongqing Planning Research Center | Xu L.,Beijing Normal University
Journal of Cleaner Production | Year: 2015

Carbon emission from municipal solid waste (MSW) treatment is one of the anthropogenic sources to cause climate change, which accounts for 3-5% of global greenhouse gas emissions according to the report of the United Nations Environment Programme (UNEP). At the same time, the gases and liquid discharged from MSW treatment can also cause other environmental impacts, such as climate change, photochemical ozone synthesis, and acidification, especially in huge city with huge population as Beijing, China. This paper proposed an eco-efficiency analysis method, which aimed to yield maximum overall environmental improvement per unit investment cost during its life cycle processing. This method took the overall reduction in the environmental impact of MSW treatment using cost-effective techniques as the objective to optimize waste disposal systems. The separation ratio during MSW collection and the proportion of techniques used for treatment were the major indicators for optimization measures. For Beijing, an increase in the waste separation ratio during collection proved to be the most effective measure, with an eco-efficiency score of 0.144. Adjustment of the proportion of treatment techniques used was less eco-efficient, with an increase in the proportion of composting being the most effective approach. Based on real needs, the objective should be to reduce the proportion of landfills used and increase the amount of composting and incineration. This optimization measure had the lowest cost and an eco-efficiency score of 0.0461, which is 60% higher than that for the measure with the lowest eco-efficiency. © 2014 Elsevier Ltd. All rights reserved.

Li N.,Chongqing Jiaotong University | Jian X.,Chongqing Jiaotong University | Liu S.,Chongqing Planning Research Center
2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011 - Proceedings | Year: 2011

The unsignalized crosswalks are the weakness tache of road traffic safety, and are easily to cause traffic accidents, in urban transportation systems consisting of the human and vehicle, roads and the environment, management and other elements. With the camera and video detector, the information of pedestrians in the typical unsignalized crosswalks in Chongqing is obtained. And the pedestrian crossing speed characteristics of the individual and crowd, different age groups and different sexes are analyzed by the SPSS(SolutionsStatistical Package for the Social Sciences). Results show that the speed through different lanes are various, and the speed of the elderly is minimum. Finally basic design principles to traffic signals and traffic facilities of unsignalized crosswalks of mountainous city are proposed. © 2011 IEEE.

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