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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.38, no.3, 2005³â, pp.361-371
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( A Diagnosis of Ecological Health Using a Physical Habitat Assessment and Multimetric Fish Model in Daejeon Stream ) |
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| º» ¿¬±¸´Â ±Ý°ÀÇ ÁöõÀÎ ´ëÀüõ¿¡¼ µµ½ÉÇÏõ¿¡¼ÀÇ »ýÅÂÇÐÀû °Ç°¼º Æò°¡¸¦ À§ÇØ 2004³â 8¿ùºÎÅÍ 2005³â 4¿ù±îÁö ¾î·ù¸¦ ÀÌ¿ëÇÑ »ý¹°ÇÐÀû °Ç°µµÁö¼ö (IBI), ´ëÀüõÀÇ ¼öÁú ¸ð´ÏÅ͸µ ÀÚ·á ¹× ¹°¸®Àû ¼½ÄÁö Æò°¡ Áö¼ö (QHEI)¸¦ ºñ±³ÇÏ¿© ÃÑüÀû ÇÏõ»ýÅÂ°è °Ç°µµ¸¦ Áø´ÜÇÏ¿´´Ù. »ó±â º¯¼öÀÇ ½Ã°ø°£ÀûÀÎ ºÐ¼®À» À§ÇØ ´ëÀüõÀÇ »ó·ùºÎ¿¡¼ ÇÏ·ù±îÁö 4°³ÀÇ ÁöÁ¡À» ¼±Á¤ÇÏ¿´´Ù. ´ëÀüõÀÇ »ý¹°ÇÐÀû °Ç°µµ Áö¼ö»êÁ¤ ¹× Àû¿ëÀ» À§ÇØ ÇÏõ °Ç°µµ Æò°¡¸ðµ¨(SHA model)À» °³¹ßÇÏ¿´°í, °Ç°µµ Æò°¡¸ðµ¨Àº ¾È µî (2003)¿¡ ÀÇÇØ ±¹³» ȯ°æ¿¡ ¸Â°Ô Àû¿ëµÈ IBI (Karr, 1981: Barbour et al., 1999)¸ðµ¨À» ÀÌ¿ëÇÏ¿´´Ù. ´ëÀüõÀÇ ÀÌÈÇÐÀû ¼öÁúÀÚ·á ºÐ¼®¿¡ µû¸£¸é, 1995³âºÎÅÍ 2004³â±îÁö 10³â µ¿¾È ÈÇÐÀû »ê¼Ò¿ä±¸·® (COD), »ý¹°ÇÐÀû »ê¼Ò¿ä±¸·® (BOD), ÃÑÁú¼Ò (TN), ÃÑÀÎ (TP)Àº 1.6 ${sim}$ 5.3¹è±îÁö °¨¼ÒÇÏ¿´°í, »ó·ùºÎÅÍ ÇÏ·ù±îÁö 4¹è ÀÌ»óÀÇ °ø°£ÀûÀÎ ¼öÁú Â÷À̸¦ º¸¿´´Ù. »ý¹°ÇÐÀû °Ç°µµÁö¼ö¸¦ ³ªÅ¸³»´Â SHA¸ðµ¨ °ªÀº Æò±Õ 23¿´°í, ÁöÁ¡¿¡ µû¶ó 20 ${sim}$ 26±îÁö º¯À̸¦ º¸¿© °Ç°µµ´Â ¡®º¸Åë(Fair)-¾ÇÈ' »óÅ (poor)·Î ³ªÅ¸³µ´Ù. ¼½ÄÁö °Ç°µµ¸¦ ³ªÅ¸³»´Â ¹°¸®Àû ¼½ÄÁö Æò°¡Áö¼ö´Â »ó·ùºÎÅÍ ÇÏ·ù±îÁö 39(¾ÇÈ»óÅÂ) ${sim}$ 124(¾çÈ£»óÅÂ)ÀÇ ¹üÀ§·Î »ó·ù¿ª¿¡ À§Ä¡ÇÑ ÁöÁ¡ 1À» Á¦¿ÜÇϰí´Â ³ª¸ÓÁö 3°³ ÁöÁ¡¿¡¼ ¸ðµÎ ³·Àº °ªÀ» º¸¿´´Ù. US EPA (1993)ÀÇ ±âÁØ¿¡ ÀǰÅÇÒ ¶§, »ý¹°ÇÐÀû °Ç°µµ´Â TN, TP, BOD ¹× COD °ªÀÌ ÃÖ°íÄ¡¸¦ º¸ÀÎ ÁöÁ¡ 4¿¡¼ ¡¯¾ÇÈ»óÅ¡®·Î ³ªÅ¸³µÀ¸¸ç, ÈÇÐÀû ¼öÁú ¹× ¼½ÄÁö °Ç°µµ°¡ Ÿ Á¶»çÁöÁ¡µéº¸´Ù ³ôÀº ÃÖ»ó·ùÀÇ ÁöÁ¡ 1¿¡¼ »ý¹°ÇÐÀû °Ç°µµ´Â ¾çÈ£ÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ ¹Î°¨Á¾ÀÇ »ó´ëºóµµ´Â ¼öÁú°ú Á÷Á¢ÀûÀÎ ÇÔ¼ö°ü°è¿¡ ÀÖ¾úÀ¸¸ç, ÀÌ·± ¾ç»óÀº ³»¼ºÁ¾ÀÇ ±¸¼ººñ¿¡¼µµ ³ªÅ¸³µ´Ù. ÀÌ °°Àº °á°ú´Â ¾î·ù¸¦ ÀÌ¿ëÇÑ »ý¹°ÇÐÀû °Ç°µµ´Â ÀÌÈÇÐÀû ¼öÁú ¹× ¹°¸®Àû¼½ÄÁö Ư¼ºÀ» Àß ¹Ý¿µÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| The objective of study was to diagnose integrative ecological health of Daejeon Stream, one of the tributaries of Guem River, during May 2004 ${sim}$ April 2005. The research approach was primarily based on a Qualitative Habitat Evaluation Index (QHEI) and the Index of Biological Integrity (IBI) using fish assemblage. These outcomes were compared with conventional chemical dataset. For the experiment, four sampling sites were chosen from Daejeon Stream and long-term water quality data during 1995 ${sim}$ 2004 (obtained from the Ministry of Environment) were analyzed in the spatial and temporal aspects. For the biological health assessment, we developed a stream health assessment model (SHA model) far regional applications. We found that current water quality conditions, based on the COD, BOD, TN and TP, were enhanced by 1.6 ${sim}$ 5.3 fold over the period of 1995 ${sim}$ 2004 and that the parameters showed a typical longitudinal decline from the upstream to downstream reach. The differences of water quality between the two reaches were more than 4.4 times, indicating a large spatial variations within the stream. The health conditions, based on the SHA model, averaged 23 and varied from 20 to 26 depending on the sampling stations. Values of the QHEI varied from 39 (Poor condition) to 124 (Cood condition)and values of QHEI in the reach of S2 ${sim}$ S4 had significantly lower than in the headwater site (S1). Also, biological stream health, based on the criteria of US EPA (1993), was judged as 'Poor condition', in the S4 where TN, TP, BOD and COD were highest. In the meantime, maximum value of SHA (26) was found in the upstream reach (S1) where the water quality and QHEI were best. We also found that compositions of sensitive species showed a linear function with water quality conditions and this pattern was evident in the tolerant species. Thus, the biological stream health, based on the SHA model, matched well water chemistry. Overall outcomes suggest that the biological health impact was a function of chemical degradation and physical habitat quality in the stream. |
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| Stream health assessment;habitat evaluation;water quality;biological health; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.38, no.3, 2005³â, pp.361-371
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200518317185071)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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