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Emergy analysis on urban metabolism by counties in Beijing
Qi, Wei1,2; Deng, Xiangzheng1,2,3; Chu, Xi4; Zhao, Chunhong5; Zhang, Fan6
2017-10-01
Source PublicationPHYSICS AND CHEMISTRY OF THE EARTH
ISSN1474-7065
Volume101Pages:157-165
Corresponding AuthorDeng, Xiangzheng(dengxz@igsnrr.ac.cn)
AbstractBeijing is an international metropolis, with rapid urbanization during the last 30 years. However, it faces the challenge of sustainability with limited natural resources. This paper attempts to incorporate emergy analysis on urban metabolism to investigate the sustainability of the entire Beijing at the county level. Based on the time-series climate data and socioeconomic data, we calculated the structure, intensities, environment pressures and output efficiency of the urban metabolic emergy system by counties between 2005 and 2014. The result shows that the metabolic emergy stores of Beijing, especially in Capital Function Core (CFC) area, had been increasing significantly during the study period, especially for the increasing imported and exported emergy accounting. The 16 districts of Beijing can be grouped into four types of functional areas in terms of the function in urban metabolism. The five parts of urban metabolic emergy system had obviously spatial difference by counties, and the renewable emergy in CFC area and Urban Function Development (UFD) zone was obviously lower than in City Development (CD) zone and Ecological Conservation Development (ECD) area. The non-renewable emergy and waste emergy in CFC area, UFD zone and CD zone were obviously higher than that in ECD area. The imported emergy and exported emergy were significantly higher in Dongcheng, Xicheng and Chaoyang district. Emergy use intensities of CFC area had been increasing with the rapid rise in imported emergy and exported emergy, resulting in the increasing environmental pressure. However, the district governments of CFC area are trying to enhance output efficiency and sustainability to reduce waste emergy. The indices of emergy yield rate (EYR) and emergy sustainable index (ESI) had been gradually decreasing and the region with the highest value of EYR and ESI, in decreasing order, are: ECD area, CD zone, UFD zone, and CFC area. The result indicates that CFC area is more fragile and dependent on external resources. Therefore, the Beijing government, especially the district governments of CFC area should encourage the exploitation and utilization of renewable resources and energy, increase the consumption efficiency of non-renewable resources and energy, and establish the mechanism to re-use wastes of resources and energy in order to promote the urban metabolism. (C) 2017 Elsevier Ltd. All rights reserved.
KeywordUrban metabolism Emergy analysis Sustainability Urbanization Beijing
DOI10.1016/j.pce.2017.01.024
WOS KeywordMULTISCALE INTEGRATED ANALYSIS ; CHINA ; CONSUMPTION ; SOCIETAL ; SYSTEMS ; CITIES
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China Programs[71533004] ; National Natural Science Foundation of International/Regional Cooperation and Exchange Programs[71561137002]
Funding OrganizationNational Natural Science Foundation of China Programs ; National Natural Science Foundation of International/Regional Cooperation and Exchange Programs
WOS Research AreaGeology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000416704100017
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/56741
Collection中国科学院地理科学与资源研究所
Corresponding AuthorDeng, Xiangzheng
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Ctr Chinese Agr Policy, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Hubei Univ, Resources & Environm Sci, Wuhan 430062, Hubei, Peoples R China
5.Texas State Univ, Dept Geog, San Marcos, TX USA
6.Beijing Normal Univ, Sch Environm, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Qi, Wei,Deng, Xiangzheng,Chu, Xi,et al. Emergy analysis on urban metabolism by counties in Beijing[J]. PHYSICS AND CHEMISTRY OF THE EARTH,2017,101:157-165.
APA Qi, Wei,Deng, Xiangzheng,Chu, Xi,Zhao, Chunhong,&Zhang, Fan.(2017).Emergy analysis on urban metabolism by counties in Beijing.PHYSICS AND CHEMISTRY OF THE EARTH,101,157-165.
MLA Qi, Wei,et al."Emergy analysis on urban metabolism by counties in Beijing".PHYSICS AND CHEMISTRY OF THE EARTH 101(2017):157-165.
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