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CAS Workshop on Ecosystem Succession Theory and Practice of Ecological Restoration Emergy monitor
of urban sustainable development Lu
Hongfang1 Ye
Zheng2 Lan
Shengfang3 Peng
Shaolin1 (1South
China Institute of Botany, Academic Science, Guangzhou 510650,
China; 2Zhongshan Gardens (Park) Administrative Office of
Guangdong Province; 3South China Agricultural University,
Guangzhou 510642, China) Abstract: Founded by H.T. Odum, emergy analysis has been seemed as a bridge between natural and economic system. It has been highlighted as a useful method to evaluate the sustainable development ability of urban ecosystems. But the emergy indices system for this evaluation is still young and need to be improved. This paper is a study on emergy indices for the evaluation of urban’s sustainable development ability. Based on the deficiency analysis of the current Emergy Sustainable index (ESI), a new Emergy Index for Sustainable Development (EISD) is deduced. Employing EISD, a case study is conducted to evaluate the development of Zhongshan city Pearl Delta, during 1996 to 2000. The result is that the EISD of Zhongshan had appreciably declined from 1996 to 1998, and quickly improved from 1998 to 2000, partly because of its environment protection and product construction. Zhongshan city should pay more attention to improve its production efficiency and decrease its waste ratio. The case study shows that EISD can assessment the sustainable development ability more roundly, with the consideration of environmental impact and social-economic effect simultaneously. Key words: index; emergy; urban
sustainable development; Zhongshan City
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