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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.42, no.2, 2009³â, pp.183-191
µ¿Áø°­ÀÇ ÀÌ.È­ÇÐÀû ¼öÁú ¹× ¼­½ÄÁö ºÐ¼®À» ÅëÇÑ ¾î·ù »ýÅ¿µÇâ Æò°¡
( Ecological Health Assessment of Dongjin River Based on Chemical Measurement and Fish Assemblage Analysis. )
±èÀ¯Ç¥;ÀÌÀÇÇà;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¸í½Ã½ºÅÛ°úÇдëÇÐ;Çѱ¹³ó¾îÃ̰ø»ç ³ó¾îÃÌ¿¬±¸¿ø;Ãæ³²´ëÇб³ »ý¸í½Ã½ºÅÛ°úÇдëÇÐ;
 
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º» ¿¬±¸´Â µ¿Áø°­ ¼ö°è Áß µ¿Áø°­ º»·ùÀÇ »ó Áß ÇÏ·ùÀÇ 3°³ ÁöÁ¡À» ¼±Á¤ÇÏ¿© Á¶»ç¸¦ ½Ç½ÃÇÏ¿© ÀÌ È­ÇÐÀû ¼öÁú ¹× ¼­½ÄÁö ºÐ¼®À» ÅëÇÏ¿© »ýÅ °Ç°­µµ ¹× ¾î·ù ºÐÆ÷Ư¼ºÀ» 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 µ¿Áø°­ ¼ö°èÀÇ È¯°æºÎ ¼öÁú ÃøÁ¤¸Á ÀÚ·á Áß 2005³âºÎÅÍ 2008³â±îÁö 4³â°£ÀÇ ÀڷḦ ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. ³»¼ºÁ¾À̸鼭 Àâ½Ä¼º ¾îÁ¾ÀÎ ÇǶó¹Ì°¡ ¿ìÁ¡Á¾À¸·Î ³ªÅ¸³µÀ¸¸ç, µ¿Áø°­ÀÇ »ý¹°ÅëÇÕÁö¼ö´Â Æò±Õ 19(n=3)·Î¼­ "º¸Åë»óÅÂ" (Fair)·Î ³ªÅ¸³µ´Ù. ÁöÁ¡º°·Î ÁöÁ¡ 1¿¡¼­ 28 "¾çÈ£»óÅÂ"(Good)·Î °¡Àå ³ô°Ô ³ªÅ¸³­ ¹Ý¸é¿¡ ÁöÁ¡ 2¿Í 3Àº °¢°¢ 18°ú 12·Î "º¸Åë»óÅÂ"(Fair), "ºÒ·®»óÅÂ"(Poor)·Î ³ªÅ¸³µ´Ù. ¼­½ÄÁö Æò°¡ Áö¼ö´Â 117(n=3)À¸·Î "º¸Åë${sim}$¾çÈ£»óÅÂ"(Fair${sim}$Good)·Î ³ªÅ¸³µÀ¸¸ç, »ó·ù¿¡¼­ ÇÏ·ù·Î °¥¼ö·Ï ¾ÇÈ­µÇ´Â °æÇâÀ» º¸¿´´Ù. ÀÌ È­ÇÐÀû ¼öÁúÀÚ·áÀÇ ºÐ¼® °á°ú Áö³­ 4³â°£ Æò±Õ BOD´Â 2.3 mg $L^{-1}$(¹üÀ§:0.1${sim}$8.9 mg $L^{-1}$)·Î¼­ ¿ì¸®³ª¶ó ¼öÁú±âÁØ(2007³â 1¿ùÀÇ È¯°æºÎ ±âÁذí½Ã)¿¡ ÀǰÅÇÒ ¶§ II(¾à°£ ÁÁÀ½)µî±ÞÀ» º¸¿´´Ù. COD´Â Æã±Õ 5.5 mg $L^{-1}$(¹üÀ§: 1.8${sim}$12.6 mg $L^{-1}$)·Î ³ªÅ¸³µ°í, °èÀý ¹× ÁöÁ¡º°·Î Å« º¯ÀÌÆøÀ» º¸¿´´Ù. TNÀÇ Æò±Õ°ªÀº 2.7 mg $L^{-1}$(¹üÀ§: 0.9${sim}$7.5 mg $L^{-1}$)À̰í, TPÀÇ Æò±Õ°ªÀº 0.127 mg $L^{-1}$(¹üÀ§: 0.01${sim}$0.391 mg $L^{-1}$)·Î TN°ú °°ÀÌ ÇÏ·ù·Î °¥¼ö·Ï Áõ°¡ÇÏ´Â º¸¿´´Ù. EC´Â Æò±Õ°ª 174.9 ${mu}s$ $cm^{-1}$(¹üÀ§: 6.7${sim}$547 ${mu}s$ $cm^{-1}$)À̰í, SS´Â 17.7mg $L^{-1}$(¹üÀ§: 0.5${sim}$62.7 mg $L^{-1}$)·Î ³ªÅ¸³µ´Ù. º» ¿¬±¸¿¡¼­ »ý¹°ÅëÇÕÁö¼ö¿Í ¹°¸®Àû ¼­½ÄÁö Æò°¡, ÀÌ È­ÇÐÀû ¼öÁú ºÐ¼®¿¡ µû¸£¸é, µ¿Áø°­ÀÇ ¼öȯ°æ °Ç°­ »óÅ´ ¾ÇÈ­µÇ¾î ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³ª ¼­½ÄÁö¿Í ³ó¾÷ ¹è¼öÀÇ °ü¸®°¡ ÇÊ¿äÇÑ °ÍÀ¸·Î »ç·áµÇ¿´´Ù.
This study was to evaluate ecological health of Dongjin River in October 2007. The ecological health assessments was based on the Index of Biological Integrity (IBI), Qualitative Habitat Evaluation Index (QHEI), and water chemistry. 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 2005${sim}$2008, using the water chemistry dataset, obtained from the Ministry of Environment, Korea. In Dongjin River, values of IBI averaged 19 (n=3), which is judged as a "Fair" condition after the criteria of Barbour et al. (1999). There was a distinct spatial variation. IBI score at Site 1 was estimated as 28, indicating a "Good" condition whereas, IBI at Site 2 and Site 3 were as 18 and 12, indicating "Fair" and "Poor" condition, respectively. Habitat analysis showed that QHEI values in the river averaged 117 (n=3), indicating a "Fair${sim}$Good" condition after the criteria of Barbour et al. (1999). Values of BOD and COD averaged 2.3 mg $L^{-1}$ (scope: 0.1${sim}$8.9 mg $L^{-1}$) and 5.5 mg $L^{-1}$ (scope: 1.8${sim}$12.6 mg $L^{-1}$), respectively during the study. Total nitrogen (TN) and total phosphorus (TP) averaged 2.7mg $L^{-1}$ and 0.127mg $L^{-1}$, respectively, and the nutrients showed large longitudinal gradients between the upper and lower reach. Overall, dataset of IBI, QHEI, and water chemistry showed that river health was a gradual decline at upstream to downstream. So, Dongjin River should be protected from habitat disturbance and chemical pollutions.
 
Ű¿öµå
ecological health;habitat;water quality;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.42, no.2, 2009³â, pp.183-191
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200926158875916)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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