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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.34, no.3, 2001³â, pp.153-165
»ý¹°º¸ÀüÁö¼ö(Index of Biological Integrity) ¹× ¼­½ÄÁö Æò°¡Áö¼ö (Qualitative Habitat Evaluation Index)¸¦ ÀÌ¿ëÇÑ Æòâ°­ÀÇ ¼öȯ°æ Æò°¡
( An Evaluation on Health Conditions of Pyong-Chang River using the Index of Biological Integrity (IBI) and Qualitative Habitat Evaluation Index(QHEI) )
Á¤½ÂÇö;Ãֽż®;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¹°Çаú;Ãæ³²´ëÇб³ »ý¹°Çаú;ÀÌÈ­¿©ÀÚ´ëÇб³ ȯ°æÇаú;
 
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º» ¿¬±¸¿¡¼­´Â 1999³â 9¿ù¿¡¼­ 2000³â 8¿ù ±â°£µ¿¾È »ý¹° º¸ÀüÁö¼ö(Index of Biological Integrity, IBI) ¹× ÁúÀû ¼­½ÄÁö Æò°¡ Áö¼ö(Qualitative Habitat EvaluationIndex, QHEI)¸¦ ÀÌ¿ëÇÏ¿© ÇѰ­¼ö°èÀÇ »ó·ù¿¡ À§Ä¡ÇÏ´Â Æòâ°­ÀÇ °Ç°­µµ¸¦ Æò°¡ÇÏ¿´´Ù. Á¶»ç °á°ú, 11°³ ¸ÞÆ®¸¯À» ÀÌ¿ëÇÑ Æò±Õ IBI°ªÀº 49(¹üÀ§: 51${sim}$45)·Î¼­ Karr(1981)°¡ Á¦½ÃÇÑ ±âÁØ¿¡ ÀǰÅÇÒ ¶§ ÇÏõ °Ç°­µµ(Stream¡¡Health)´Â Good${sim}$Excellent»óÅ »çÀÌ¿¡ ÀÖ¾ú°í, Æò±Õ QHEI°ªÀº 88(¹üÀ§: 94${sim}$76)·Î¼­ ¹°¸®Àû ¼­½ÄÁöÃø¸é¿¡¼­ÀÇ °Ç°­µµ´Â ÃÖÀû»óÅ (Comparable to¡¡reference) ȤÀº »ý¹°ÀÇ ¼­½Ä¿¡´Â ÀûÇÕÇÑ »óÅ (Supporting)¸¦ º¸¿´´Ù. ÁöÁ¡º° TBI°ªÀÇ ºñ±³¿¡ µû¸£¸é »ó, ÇÏ·ù»çÀÌ¿¡ ¹Ì¾àÇÑ Â÷À̸¦ º¸ÀÎ ¹Ý¸é, °¢ Á¶»çÁöÁ¡ÀÇ QHEI°ªÀº ÀÌ¿ëµÈ º¯¼öƯ¼º¿¡ µû¸¥ º¯À̸¦ º¸¿´´Ù. 1Â÷ ȸ±ÍºÐ¼® °á°ú¿¡ µû¸£¸é, QHEI°ªÀº ÇÏõÂ÷¼ö(Streamorder)¿Í À¯ÀÇÇÑ °ü°è°¡ ¾ø¾ú´Ù(p=1.8; n=7). ÀÌ·¯ÇÑ °á°ú´Â ÇÏõÂ÷¼ö°¡ Áõ°¡Çصµ Á¡ ¿À¿°¿øÀÇ ºÎÀç·Î ÀÎÇØ ¼­½ÄÁö¿¡´Â Å« º¯È­°¡ ¾ø¾ú±â ¶§¹®À¸·Î »ç·áµÇ¾ú´Ù. Feed guildºÐ¼®¿¡ µû¸£¸é, ½ÄÃæ¼º ¾î·ù(Insectivore)ÀÇ »ó´ë dzºÎµµ´Â Àüü ¾îÁ¾ÀÇ85.1%¸¦,Àâ½Ä¼º ¾î·ù(Omnivore)¹× À°½Ä¼º ¾î·ù(Car-nivore)´Â °¢°¢ Àüü ¾îÁ¾ÀÇ 3.5%¹× 0.3%¸¦ Â÷ÁöÇÏ¿´´Ù. ³»¼ºµµÀÇ °æ¿ì, ¼­½ÄÁö ÆÄ±« ¹× ¿À¿°¿¡ ½±°Ô °¨¼ÒµÇ´Â ¹Î°¨Á¾ÀÇ »ó´ë ºóµµ´Â 75.0%, ³»¼ºÁ¾Àº 4.6%·Î¼­ ¶Ñ·ÇÇÑ Â÷À̸¦ º¸¿´À¸¸ç, µµÀÔÁ¾(exotics species)¹× ºñÁ¤»óÁ¾(anomalies species)ÀÇ °³Ã¼´Â äÁýµÇÁö ¾Ê¾Ò´Ù. ¶ÇÇÑ È¸±ÍºÐ¼® °á°ú, ÁöÁ¡º° Æò±Õ IBI°ªÀÇ º¯ÀÌ´Â QHEI°ªÀÇ º¯È­¿¡ ÀÇÇØ 57%±îÁö ¼³¸íµÇ¾ú´Ù($R^2$=0.57,p<0.05,n=7).º» Á¶»ç¿¡¼­ »êÁ¤µÈ °³°³ ¸ÞÆ®¸¯ Ư¼º, IBI°ª ¹×¡¡QHEI°ªÀÇ »óÈ£°ü°è¿¡ µû¸£¸é, Æòâ°­ÀÇ ÇöÀç ¼ö ȯ°æÀº »ý¹° ¼­½Ä¿¡ ÀûÀýÇÑ »óÅ¿¡¼­ ÃÖÀû »óÅÂÀÇ ¹üÀ§¿¡ ÀÖÀ½ÀÌ ºÐ¸íÇϳª, ¿À¿° ¹× ¹°¸®Àû ¼­½ÄÁö°¡ ÆÄ±«µÉ °æ¿ì °¨¼ÒµÉ ¼ö ÀÖÀ½À» ½Ã»çÇÏ¿´´Ù.
We evaluated the health condition of Pyong-Chang river, the tributary of Han- River, using the Index of Biological Integrity (IBI) and Qualitative Habitat Evaluation Index (QHEI) during September 1999${sim}$August 2000. The annual mean of IBI,¡¡which was estimated using eleven metrics, was 49 (range: $45{sim}51$) and the mean of QHEI, which was estimated using seven parameters, was 88 (range: $76{sim}94$) during¡¡the study. The river health, based on the IBI criteria of Karr (1981), ranged from "excellent" to "good" conditions, while based on the habitat criteria of Plafkin et al. (1989), it ranged from "pristine" (comparable to reference) to "supporting" conditions. Values of IBI showed slight differences between upstream and downstream sites and QHEI values varied weakly depending on characteristics of variables. Regression analyses showed that annual values of QHEI had no functional relations with stream order (p = 1.82; n = 8) but showed some decreases near slight point-sources. This result indicates that conditions of physical habitat did not change highly with increases of the stream order. According to analyses of feed guilds, relative abundance of insectivores, omnivores and carnivores was 85.1%, 3.5% 0.3%, respectively. Also, relative abundance of sensitive and tolerant species was 75% and 4.6%, respectively, while exotic and morphological anomalies were not found in the river. These outcomes indicate that health condition of fish, based on the trophic conditions of U.S. EPA (1993), was excellent in the river. Regression analyses of IBI values against the QHEI showed that the variation of habitat conditions accounted 57% for the variation of the Index of Biological Integrity (p<0.05; $R^2;=;0.57$; n = 7).Overall data of IBI and QHEI suggest that the river health in the present is in optimal conditions but may be degradated by acceleration of chemical inputs and physical-habitat disturbance.
 
Ű¿öµå
Biological integrity;IBI;Habitat;River health;Feed guild;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.34, no.3, 2001³â, pp.153-165
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200118317177573)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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