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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.40, no.2, 2007³â, pp.254-263
¾î·ù¸¦ ÀÌ¿ëÇÑ ³«µ¿°­ ¼ö°èÀÇ »ý¹°ÇÐÀû ¼öÁú Æò°¡
( Biological Water Quality Assessments Using Fish Assemblage in Nakdong River Watershed )
ÃÖÁö¿õ;ÀÌÀÇÇà;ÀÌÀçÈÆ;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;
 
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º» ¿¬±¸¿¡¼­´Â ³«µ¿°­ ¼ö°èÀÇ º»·ù¿¡ ÇØ´çÇÏ´Â 6°³ ÁöÁ¡À» ¼±Á¤ÇÏ¿© 2004³â 7¿ù(dz¼ö±â), 2005³â 3¿ù(°¥¼ö±â), 2ȸ¿¡ °ÉÃÄ »ý¹°ÇÐÀû °Ç°­µµ Áö¼ö(Index of Biological Integrity, IBI), Á¤¼ºÀû ¼­½ÄÁöÆò°¡Áö¼ö(Qualitative Habitat Evaluation Index, QHEI) ºÐ¼® ¹× ÀÌÈ­ÇÐÀû ¼öÁúºÐ¼®À» ÅëÇØ ÅëÇÕÀû ÇÏõ »ýÅ °Ç°­¼º Æò°¡¸¦ ½Ç½ÃÇÏ¿´´Ù. »ýÅ °Ç°­¼º Æò°¡¸¦ À§ÇÑ »ý¹°ÅëÇÕÁö¼ö ¸ðµ¨Àº ±¹³» Ư¼º¿¡ ¸Â°Ô ¼öÁ¤ º¸¿ÏµÈ 10°³ ´Ùº¯¼ö ¸ÞÆ®¸¯ ¸ðµ¨(Multimetric model)À» ÀÌ¿ëÇÏ¿´°í, ¹°¸®Àû ¼­½ÄÁö Áö¼öÀÎ QHEI´Â ±¹³» ÇÏõ Ư¼º¿¡ ¸Â°Ô º¯ÇüÇÑ 11°³ÀÇ ´Ùº¯¼ö ¸ÞÆ®¸¯ ¸ðµ¨À» Àû¿ëÇÏ¿´´Ù. ³«µ¿°­ÀÇ »ý¹°ÅëÇÕÁö¼ö´Â Æò±Õ 20.8(n=12)·Î "¾ÇÈ­»óÅÂ" (Poor)¸¦ ³ªÅ¸³ÂÀ¸¸ç, °¢ ÁöÁ¡¿¡¼­ Àü¹ÝÀûÀ¸·Î ³·Àº »ýÅÂÇÐÀû °Ç°­µµ °ªÀ» ³ªÅ¸³Â´Ù. ÀÌ´Â ÀÌÈ­ÇÐÀû ¼öÁú ¾ÇÈ­¿Í ¹°¸®Àû ¼­½ÄÁöÀÇ ±³¶õÀ¸·Î ÀÎÇØ ¼öü ³»ÀÇ »ý¹°¿¡°Ô Á÷Á¢ÀûÀÎ ¿µÇâÀ» ³¢Ä£ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. ¹°¸®Àû ¼­½ÄÁöÆò°¡Áö¼öÀÎ QHEIÀÇ Àü ÁöÁ¡¿¡ ´ëÇÑ Æò±Õ°ªÀº 110À¸·Î "º¸Åë${sim}$¾çÈ£»óÅÂ" (Fair${sim}$Good)¸¦ º¸¿´´Ù. ÁöÁ¡º° ºÐ¼®¿¡ µû¸£¸é, 1, 5ÁöÁ¡Àº ¾çÈ£»óÅÂ(Good)¸¦ º¸¿´°í, ³ª¸ÓÁö 4°³ ÁöÁ¡¿¡¼­´Â ¸ðµÎ º¸Åë»óÅ (Fair)¸¦ º¸¿´´Ù. ±×·¯³ª 3,4ÁöÁ¡Àº º¸Åë${sim}$¾ÇÈ­ (Fair${sim}$poor)¿¡ °¡±î¿î »óŸ¦ º¸¿© ¼­½ÄÁöÀÇ ±³¶õÀÌ Å« °ÍÀ¸·Î ÆÇ´ÜµÇ¾úÀ¸¸ç, ƯÈ÷ $M_1{sim}M_5$, $M_7$, $M_{10}$¿¡¼­ ¸Å¿ì ¾ÇÈ­µÈ »óŸ¦ º¸¿© Çâ ÈÄ ¸ÞÆ®¸¯¿¡ ´ëÇÑ º¹¿øÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. ÀÌÈ­ÇÐÀû ¼öÁúÀº 3ÁöÁ¡¿¡¼­ ±ÝÈ£°­ÀÇ À¯ÀÔ°ú Àαٿ¡ À§Ä¡ÇÑ ºÐ´¢Ã³¸®½Ã¼³ÀÇ Á÷Á¢ÀûÀÎ ¿µÇâÀ¸·Î ÀÎÇØ Å©°Ô ¾ÇÈ­µÇ¾ú´Ù. ³«µ¿°­ÀÇ ÇÏ·ù¿¡ ÇØ´çÇÏ´Â 4, 5, 6ÁöÁ¡Àº ³²°­°ú Ȳ°­ÀÇ À¯ÀÔ¿¡ ÀÇÇÑ Èñ¼®È¿°ú ¹× »ý¹°ÇÐÀû ÀÚÁ¤ÀÛ¿ë¿¡ ÀÇÇØ ¼öÁúÀÌ °³¼±µÇ°Å³ª ÀÏÁ¤³óµµ¸¦ À¯ÁöÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The objective of this study was to evaluate biological water quality using fish assemblages in Nakdong River watershed. We selected 6 sites along the main axis of the river and evaluated the Index of Biological Integrity (IBI), Qualitative Habitat Evaluation Index (QHEI) and chemical water quality during July 2004${sim}$March 2006. For the study, we applied the 10 metric IBI model, which was developed for national biological water quality criteria. Nakdong River's IBI value averaged 20.8 (n=14) during the study which means poor biological water quality. Physical habitat health at all sites, based on QHEI model, was measured as 110, indicating fair${sim}$good condition. The habitat health varied depending on the locations sampled. Habitat health in sites 1 and 6 was judged as good, while the health in sites 3 and 4 was $poor{sim}fair$. Especially, we found the metric values of $M1{sim}M5$, M7, M10 were low in sites 3 and 4 compared to other sites. In these sites, thus, habitat restoration of substrate composition, riffles, and bank vegetation may be necessary. In the mean time, chemical water quality, based on BOD, COD, TSS, and nutrients, had no large spatial and temporal variations. Overall data analysis indicated that site 3 was largely impacted by the polluted-tributary, Keumho River and the downstreams showed better water quality due to the dilution of the polluted river water by Nam River and Hwang River.
 
Ű¿öµå
biological water quality;habitat health;biological integrity;IBI;Nakdong River;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.40, no.2, 2007³â, pp.254-263
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200709905950936)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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