生态环境学报Issue(6)：1084-1092,9.
国际能值研究热点和前沿的可视化分析
Visualization analysis of hot topics and frontiers on international emergy research
摘要
Abstract
Emergy is used to measure the amount of energy of one type (usually solar energy) that is required to provide a given flow or storage of energy or matter, it is the energy consumption of a product or service formed. As a new concept in ecological economics, emergy theory builds “a bridge between environment and economy” and unifies the quantification of material flow, energy flow, economic flow, population flow and information flow. Now emergy theory and its application have become hot domains in ecological economics, and emergy analysis method is also increasingly developing into a basic evaluation tool of eco-economic system. Firstly, based on data of literatures including theme of“emergy”collected from Web of Science during 1998 and 2013, statistical analysis of distribution about emergy research involved discipline, time, region and institution is given in this article, it is shown that number of literatures about emergy is on rise year by year, mainly focuses on subjects such as ecology, environmental science and energy, and research strength of emergy concentrates in Italy, China and USA. Univ Siena, Beijing Normal University, Peking University, Chinese Academy of Science, University of Florida and so on show stronger research strength of emergy. Then CiteSpace software is used to draw out the literature co-citation mapping knowledge domain to analyze knowledge foundation and influence of core authors of emergy. The mapping knowledge domain reveals that researchers such as Odum HT, Brown MT, Hau JL, Ulgiati S and so on have established solid basement of emergy research and pushed the research forward. Finally, a co-word analysis and word frequency analysis of key words and expansion words are conducted to draw out the clustering-map of evolution of hot domains of emergy and viewgraph of expansion words. From viewgraph of expansion words, we find out some research fronts of emergy such as environmental sustainability, sustainable development, ecosystem services, electricity production, emergy accounting, life cycle assessment and so on. It is evident that sustainable development and combination with other theories or methods are going to be new hot domains of emergy research. However, theoretical research of emergy seriously lags behind the extent of application range of it. Transformity and evaluation index system of emergy now can not meet the needs of research on micro-region and micro-system. Shortage of core authors and typical works as well combination with dynamic models and emulation techniques are also problems that should be solved. Future researches of emergy should focus on better improving the theory and method as well as extending application range of emergy;categorizing objects of study and unify evaluation index;combining emergy method with dynamic models to achieve a dynamic evaluation of sustainable development for some eco-economic systems.关键词
能值/可视化分析/研究热点/研究前沿/CiteSpaceIIKey words
emergy/visualization analysis/hot domains/research fronts/CiteSpace II分类
管理科学引用本文复制引用
李春发,曹莹莹..国际能值研究热点和前沿的可视化分析[J].生态环境学报,2014,(6):1084-1092,9.基金项目
国家社会科学基金项目（08BJY004）；天津市科技计划项目 （）
