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Chinese Journal of Applied Ecology ›› 2001, Vol. ›› Issue (1): 129-131.

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Emergy analysis of ecosystems

LAN Shengfang1, QIN Pei2   

  1. 1. South China Agricultural University, Guangzhou 510642;
    2. Nanjing University, Nanjing 210093
  • Received:2000-05-09 Revised:2000-07-21 Online:2001-01-25

Abstract: The concept of emergy, its use for comparing with energy were discussed in this paper.Emergy was defined as the amount of available energy required directly, indirectly to make a product or services,and emergy analysis was based on the solar emergy units (solar emjoules).Emergy provided the methodology with a common basis for measuring the value of different kinds of energy,and for evaluating the contributions from nature, humanity.A comparison of emergy analysis with previous energy analysis was also performed.

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