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Environmental Engineering Research 2004;9(4): 168-174. DOI: https://doi.org/10.4491/eer.2004.9.4.168
INDEX OF BIOLOGICAL INTEGRITY FOR WATER ENVIRONMENTAL ASSESSMENT OF NATURE-FRIENDLY RIVER WORK
Sang Hyeok Kang
Environmental Research Institute, Samcheok National University
Corresponding Author: Sang Hyeok Kang ,Tel: +82-33-570-6519, Fax: +82-33-574-6505, Email: kang7231@hanmail.net
Received: December 7, 2002;  Accepted: August 3, 2004.
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ABSTRACT
Nature-friendly river project has become a common practice in Japan. In order to make it available for the conservation and rehabilitation of desirable water environment, water criteria for water environmental assessment must be established. Especially, the criteria estimating the effects on the ecosystem in and around river should be set up. In this paper, classification method for water quality has been developed using biological indices and applied to observed data in the Honmyo River, Nagasaki, Japan. Modified PI method (BF) has been suggested and those of three most abundant species resulted in effective estimate for an overall water quality with comparatively simple procedure. Extensive database management code was prepared for the comprehensive ecological monitoring of river basin, which includes various biota. That system offers easy access of all the ecological data for a dissemination of a sound and sustainable water environment. The result of this study could improve knowledge base, serve making consensus for citizens, and help river management plans. In Japan, citizen's realization and action are the most critical factor for nature-friendly river restoration project.
Keywords: The Homyo River | Nature-friendly river work | Modified PI Method
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