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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.43, no.3, 2010³â, pp.428-436
ÅÂÈ­°­ ¼ö°èÀÇ ´Ùº¯¼ö ¾î·ùÆò°¡ ¸ðµ¨ ¹× ±ºÁýºÐ¼®¿¡ ÀÇÇÑ ÀÌÈ­ÇÐÀû ¼öÁú Ư¼º ¹× ÇÏõ »ýŰǰ­µµ Æò°¡
( Characteristics of Physico-chemical Water Quality Characteristics in Taehwa-River Watershed and Stream Ecosystem Health Assessments by a Multimetric Fish Model and Community Analysis )
±èÀ¯Ç¥;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¸í½Ã½ºÅÛ°úÇдëÇÐ;Ãæ³²´ëÇб³ »ý¸í½Ã½ºÅÛ°úÇдëÇÐ;
 
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º» ¿¬±¸´Â ÅÂÈ­°­ ¼ö°è 14°³ ÁöÁ¡À» ¼±Á¤Çϰí, 2009³â 5¿ù°ú 9¿ù 2Â÷·Ê Á¶»ç¸¦ ½Ç½ÃÇÏ¿© ÀÌ È­ÇÐÀû ¼öÁú, ¹°¸®Àû ¼­½ÄÁö ºÐ¼®À» ÅëÇÏ¿© ¾î·ù ºÐÆ÷Ư¼º ¹× »ýÅ °Ç°­µµ¸¦ Áø´ÜÇÏ¿´´Ù. »ý¹°ÅëÇÕÁö¼ö(Index of Biological Integrity, IBI)¸ðµ¨ ºÐ¼®Àº ±¹³» ÇÏõÀÇ Æ¯¼º¿¡ ¸Â°Ô ¼öÁ¤ º¸¿ÏÇÏ¿© 8°³ ´Ùº¯¼ö ¸ÞÆ®¸¯ ¸ðµ¨À» ÀÌ¿ëÇÏ¿´°í, ¹°¸®Àû ¼­½ÄÁö Æò°¡ Áö¼ö(Qualitative Habitat Evaluation Index, QHEI)ºÐ¼®Àº 11°³ÀÇ ´Ùº¯¼ö ¸ÞÆ®¸¯ ¸ðµ¨À» Àû¿ëÇÏ¿´´Ù. ÀÌ È­ÇÐÀû ¼öÁú ºÐ¼®Àº ÅÂÈ­°­ ¼ö°èÀÇ È¯°æºÎ ¼öÁú ÃøÁ¤¸Á ÀÚ·á Áß 2000³âºÎÅÍ 2009³â±îÁö 10³â°£ÀÇ ÀڷḦ ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. ÅÂÈ­°­ÀÇ Áö³­ 10³â°£ Æò±Õ BOD °ªÀº $1.7;mg;L^{-1}$·Î¼­ Ib(ÁÁÀ½) µî±ÞÀ» º¸¿´°í, $0.1{sim}31.8;mg;L^{-1}$ÀÇ ³ÐÀº º¯ÀÌÆøÀ» º¸¿´´Ù. COD °ªÀº $3.6;mg;L^{-1}$·Î¼­ ¿ª½Ã Å« º¯À̸¦ º¸¿´°í($0.4{sim}33;mg;L^{-1}$) TNÀÇ Æò±Õ°ªÀº $2.8;mg;L^{-1}$ (¹üÀ§: $0.1{sim}14.8;mg;L^{-1}$)·Î ³ªÅ¸³µÀ¸¸ç, TPÀÇ Æò±Õ°ªÀº $96.8;{mu}g;L^{-1}$ (¹üÀ§: $0{sim}1675;{mu}g;L^{-1}$)·Î ³ªÅ¸³µ´Ù. ÅÂÈ­°­ÀÇ ¹°¸®Àû ¼­½ÄÁö Æò°¡ Áö¼ö °ªÀº 67.5·Î "º¸Åë»óÅÂ"(C)¿¡¼­ 164.5 "¾çÈ£»óÅÂ"(B)ÀÇ ºÐÆ÷¸¦ º¸ÀÌ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. º»·ùÀÇ QHEI °ªÀº T9 ÁöÁ¡ ÀÌÈÄ ÇÏ·ù·Î °¥¼ö·Ï ¿ï»ê½ÃÀÇ ¿µÇâÀ¸·Î °¨¼ÒÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÅÂÈ­°­ÀÇ 1, 2Â÷ Á¶»ç °á°ú Æò±Õ 26.1(n=14)·Î "¾çÈ£»óÅÂ"(B)·Î ³ªÅ¸³µ´Ù. ÅÂÈ­°­ ¼ö°èÀÇ º»·ù´Â ¿ï»ê ½Ã³»¸¦ °üÅëÇϸ鼭 Á¡¿À¿°¿ø ¹× ºñÁ¡¿À¿°¿øÀÇ ¿µÇâÀ» ¹Þ¾Æ ÇÏ·ù·Î °¥¼ö·Ï °Ç°­¼ºÀÌ ¾ÇÈ­µÇ´Â °æÇâÀ» º¸¿´´Ù. ÅÂÈ­°­ ¼ö°èÀÇ IBI, QHEI, ÀÌ È­ÇÐÀû ¼öÁúÀ» »ìÆìº¸¸é ¼­½ÄÁöÁú°ú ¼öÁúÀÇ ¾ÇÈ­·Î º»·ù´Â ÇÏ·ù·Î °¥¼ö·Ï °Ç°­¼º ÀÌ °¨¼ÒÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
This study was to evaluate water quality characteristics and ecological health using a mulimetric fish model in Taehwa-River watershed during May~September 2009. The ecological health assessments were based on the Index of Biological Integrity (IBI) using fish community and the multimetric model of Qualitative Habitat Evaluation Index (QHEI). For the study, the models of IBI and QHEI were modified as 8 and 11 metric attributes, respectively. We also analyzed spatial patterns of chemical water quality over the period of 2000~2009, using the water chemistry dataset, obtained from the Ministry of Environment, Korea. Values of BOD and COD averaged $1.7;mg;L^{-1}$ (scope: $0.1{sim}31.8;mg;L^{-1}$) and $3.6;mg;L^{-1}$ (scope: $0.4{sim}33;mg;L^{-1}$), respectively during the study. Total nitrogen (TN) and total phosphorus (TP) averaged $2.8;mg;L^{-1}$ and $96.8;{mu}g;L^{-1}$, respectively, indicating an eutrophic-hypertrophic state. Also, TN and TP showed longitudinal increases toward the downriver reach. In the watershed, QHEI values varied from 67.5 (fair condition) to 164.5 (good condition) by the criteria of US EPA (1993). There was a abruptly decreasing tendency from T9 site in the QHEI values. According to 1st and 2nd surveys of Taewha River, multimetric model values of IBI was averaged 26.1 (n=14) with "good" condition (B) and the spatial variation was evident. Our results suggest that the mainstream sites was getting worse health condition along the river gradient due to inputs of the point and non-point sources from the urban (Ulsan city). Overall, dataset of IBI, QHEI, and water chemistry indicated that the ecological river health showed a downriver decline and the pattern was closely associated with habitat degradations and chemical pollutions as the waters pass through the urban region.
 
Ű¿öµå
ecological health;habitat;water quality;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.43, no.3, 2010³â, pp.428-436
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201009654402839)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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