Entropy | |
Ecological Economic Evaluation Based on Emergy as Embodied Cosmic Exergy: A Historical Study for the Beijing Urban Ecosystem 1978–2004 | |
Jiang Mei Ming3  Chen Zhan-Ming2  Zhang Bo2  Li Shuang Cheng1  Xia Xiao Hua4  Zhou Shi Yi2  | |
[1] College of Urban and Environmental Sciences, Peking University, Beijing 100875, P.R. China; E-Mail:;State Key Laboratory of Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China; E-Mails:;State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, BeijingNormal University, Beijing 100875, China; E-Mail:;Institute of Low-carbon Industry, BDA Ltd, Beijing 100176, China; E-Mail: | |
关键词: emergy synthesis; embodied cosmic exergy; ecological economic evaluation; urban ecosystem; Beijing; | |
DOI : 10.3390/e12071696 | |
来源: mdpi | |
【 摘 要 】
For ecological economic evaluation based on the unified biophysical matrix this research illustrates an updated emergy synthesis in terms of embodied cosmic exergy instead of embodied solar energy, which successes the foundation of systems ecological theory but changes the starting point for the estimation from simply the sun to the cosmos. According to the modified definition implicating explicit scarcity and strict additivity based on the fundamental thermodynamics laws, the updated emergy approach overcomes the confusable and intractable deficiencies of traditional one and shows firmer theoretical basis as well as better applicability. As a case study for the regional socio-economic ecosystem, a cosmic emergy based ecological economic evaluation of the Beijing urban ecosystem during the period 1978-2004 is presented. The local and external resources supporting the concerned ecosystem are accounted and analyzed in a common unit,
【 授权许可】
CC BY
© 2010 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202003190053048ZK.pdf | 737KB | download |