地理科学进展

地理科学进展 ›› 2006, Vol. 25 ›› Issue (5): 94-104.doi: 10.11820/dlkxjz.2006.05.021

• 资源与经济 • 上一篇    下一篇

生态经济系统能值分析——以北京密云县为例

周连第1, 胡艳霞1, 严茂超2,3, 董孝斌4, 吴志强5, 魏长山5   

  1. 1. 北京市农林科学院综合发展研究所100089|
    2. 中国农业大学农学与生物技术学院, 100094|
    3. 中国科学院地理科学与资源研究所100101|
    4. 北京师范大学资源学院100875|
    5. 北京密云县科委, 101500
  • 收稿日期:2006-06-01 修回日期:2006-08-01 出版日期:2006-09-25 发布日期:2006-09-25
  • 作者简介:周连第(1963-), 男, 博士, 研究方向为区域可持续发展.Email:liandizhou@126.com
  • 基金资助:

    国家科技攻关项目(2004BA617B-1).

Emergy Evaluation of Miyun County as the Ar ea of Water shed Conservation for Beijing

ZHOU Liandi1, HU Yanxia1, YAN Maochao2,3, DONG Xiaobin4, WU Zhiqiang5, WEI Changshan5   

  1. 1. Institute for Studies of Comprehensive Development, Beijing Academy of Agiculture &|Forestry, 100089|
    2. College of Agronomy and Biotechnology, China Agricultural University,100094|
    3. Institute of Geographical Science and Natural Resource Researches, CAS, Beijing 100101|
    4. Institute of Resource, Beijing Normal University, Beijing 100875|
    5. Scientific Committee of Miyun County in Beijing, 101500
  • Received:2006-06-01 Revised:2006-08-01 Online:2006-09-25 Published:2006-09-25

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摘要：

1. 北京市农林科学院综合发展研究所100089； 2. 中国农业大学农学与生物技术学院， 100094； 3.中国科学院地理科学与资源研究所100101； 4. 北京师范大学资源学院100875； 5. 北京密云县科委， 101500

关键词: 对策建议, 可持续发展, 密云县, 能值分析, 生态经济格局

Abstract:

As economies and ecological support system become more interdependent, new disciplines are needed to "bridge the gap"of understanding between societies and nature. It is now clear that neither ecology nor economics alone can address the problems of our global commons. New measures of wealth, of value, of contributions and production are needed that acknowledge the "natural capital" and "ecosystem services" provided from healthy environments. In order to study and view eco- economic system from a new visual angle, new tools are being invested to measure wealth, services and production fairly and equitably. Systems analysis approach is powerful to study the combined eco- economic systems of many scales. Diagramming is done with energy system symbols. The symbols each have rigorous energetic and mathematical meanings. We use an alternative measure of value, based on real contributions to system performance, termed "emergy". It is a concept which quantifies "energy memory"in products and processes. It is a new accounting unit of total contributions, direct and indirect, used in generation of a product or service. This broader approach could help us to investigate resource utilization and potentionalities and exchange in eco- conomic systems. Emergy analysis allows comparison and incorporation of environmental costs and benefits to provide a more comprehensive perspective for public policy directives. An emergy analysis of Miyun system of economy and nature was performed in order to study its sustainability and emergy use. Indices of thermodynamic and economic vitality of Miyun were evaluated and a comparison with indices of other developed and developing areas was performed. The results show that in Miyun County the total emergy use in 2003 was 2.49 ×1021sej, which was worth of 6.55 ×108US$ , and the emergy- dollar ratio was 2.99×1012sej /$, lower than the average emergy- dollar ratio of China. The emergy use per capita is 5.885.88×1015 sej/person/a, much lower than that of Beijing (17.89×1015sej/person/a). The developed carrying capacity of population is about 51 ×104 persons. At present, the population reaches 42 ×104, so it is important to make right policies to control population. The emergybased sustainability index was 0.52, which means the economic increase is based on large resource consumption, so enhancing the resource utilization efficiency and establishing rational industry structures are very important for sustainable development in future.

Key words: eco-economic system, emergy evaluation, Miyun county, policies and suggestions

中图分类号: 

  • X321