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Sustainability Evaluation of Western Nakdong River Basin by the Systems Ecology  

Kim, Jin Lee (National Institute of Environmental Research Water Environmental Research Department)
Park, Bae Kyung (National Institute of Environmental Research Water Environmental Research Department)
Lee, Su Woong (National Institute of Environmental Research Water Environmental Research Department)
Rhew, Doug Hee (National Institute of Environmental Research Water Environmental Research Department)
Publication Information
Journal of Korean Society on Water Environment / v.26, no.3, 2010 , pp. 439-445 More about this Journal
Abstract
An emergy analysis of the main energy flows driving the economy of humans and life support systems consists of environmental energies, fuels, and imports, all expressed as solar emjoules. Total emergy use (371 E20 sej/yr) of the Western Nakdong River Basin is 97 per cent from imported sources, fuels and goods and services. Emergy flows from the environment such as rain and geological uplift flux accounted for only 2.9 percent of total emergy use. Emergy yield ratio and environment loading ratio were 1.03 and 33.27, respectively. Emergy sustainability index, a ratio of emergy yield ratio to environment loading ratio, is therefore less than one, which is indicative of highly developed consumer oriented economies. It is necessary for an efficient management of Western Nakdong River Basin to reduce pollution load basically and to restructure economic activities into an environmental friendly industrial structure depending on renewable energy and resources.
Keywords
Emergy analysis; Emergy sustainability index; Emergy yield ratio; Environment loading ratio; Renewable sources;
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Times Cited By KSCI : 1  (Citation Analysis)
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