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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.41, no.2, 2008³â, pp.155-165
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´Ù°¢Àû ¼öȯ°æÁöÇ¥¸¦ ÀÌ¿ëÇÑ ¿µ»êÈ£ÀÇ »ýÅ¿µÇâ Æò°¡
( Evaluation of Yeongsan Lake Ecosystem Using Various Environment Parameters ) |
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| º» ¿¬±¸ÀÇ ¸ñÀûÀº ´Ù°¢Àû ¼öȯ°æÁöÇ¥¸¦ ÀÌ¿ëÇÏ¿© ¿µ»êÈ£ÀÇ ÇöÀç »óŸ¦ Æò°¡ÇÏ°í ´õ ³ª¾Æ°¡ ¿µ»êÈ£ÀÇ ¼öÁú °ü¸® ¹× »ýÅÂ°è º¸Àü¿¡ Ȱ¿ëÇϱâ À§ÇÔÀÌ´Ù. º» ¿¬±¸¿¡¼ Àû¿ëÇÑ Á¤¼ö»ýÅÂ°è °Ç°¼º Æò°¡ ¸ðµ¨Àº U.S. EPA(1998)ÀÇ Á¤¼ö»ýÅÂ°è Æò°¡ ±â¹ý (Lake and Reservoir Bioassessment and Biocriteria)¿¡ ±âÃʸ¦ µÎ¾ú°í, ÀÌ ¸ðµ¨À» ¹ÙÅÁÀ¸·Î ¿ì¸®³ª¶ó È£¼ÒÀÇ Æ¯¼º¿¡ ¸Â°Ô ¼öÁ¤ º¸¿ÏÇÑ ¾È°úÇÑ(2007)ÀÇ ¸ðµ¨À» µû¶ú´Ù. ¶ÇÇÑ ¿µ»êÈ£ÀÇ ¹°¸®Àû ¼½Ä ȯ°æÀ» Æò°¡Çϱâ À§ÇÏ¿© Plafkin et al.(1989)¿¡ ÀÇÇØ °³¹ßµÈ ¹°¸®Àû ¼½ÄÁö Æò°¡ ¸ðµ¨À» ÀÌ¿ëÇÏ¿© È£¼Òȯ°æ¿¡ ¸Â´Â 7 ¸ÞÆ®¸¯ ¸ðµ¨À» Àû¿ëÇÏ¿´´Ù. Á¶Á÷º° ¼öÀº ºÐ¼®Àº ¼öÀº Á÷Á¢ºÐ¼®±â(DMA-80)¸¦ ÀÌ¿ëÇÏ¿© U.S. EPA 7473 method·Î ÃøÁ¤ÇÏ¿´´Ù. º» ¿¬±¸ÀÇ Á¶»ç °á°ú, äÁýµÈ ¾î·ù´Â 1Â÷ Á¶»ç¿¡¼ 7°ú 22Á¾ 389°³Ã¼, 2Â÷ Á¶»ç¿¡¼ 7°ú 21Á¾ 631°³Ã¼, 3Â÷ Á¶»ç¿¡¼ 7°ú 19Á¾ 330°³Ã¼·Î ÃÑ 30Á¾ 1,350°³Ã¼°¡ äÁýµÇ¾ú´Ù. »ý¹°ÇÐÀû °Ç°¼º Æò°¡ Áö¼ö´Â Æò±Õ 19·Î ¾ÇÈ»óÅÂ(¹üÀ§: $14{sim}26$, n=15)ÀÎ °ÍÀ¸·Î ³ªÅ¸³µ°í ÁöÁ¡º° Å« º¯ÀÌ´Â º¸ÀÌÁö ¾Ê¾Ò´Ù. ÀÌ´Â ¿Ü·¡Á¾ÀÇ ¿ìÁ¡, »ýÅÂ°è ±³¶õ¿¡ ÀÇÇÑ ±âÇü¾îÁ¾°ú »çüÀÇ ºóµµ°¡ ³ô¾Ò±â ¶§¹®ÀÎ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. ¹°¸®Àû ¼½ÄÁö Æò°¡ °á°ú¿¡ µû¸£¸é ¿µ»êÈ£ÀÇ ¼½ÄÁö °Ç°µµ´Â Æò±Õ 72·Î º¸Åë$sim$¾çÈ£»óÅÂ(¹üÀ§: $48{sim}99$, n=15)¸¦ º¸¿´°í, ¿µ»êÈ£ ÇÏ·ùÂÊÀÌ »ó·ù¿¡ ºñÇÏ¿© ¹°¸®Àû ¼½ÄÁö °Ç°µµ°¡ ³·Àº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÏ¹Ý ¼öÁú Ç׸ñ ÃøÁ¤ °á°ú, ¿°µµ´Â Çϱ¸µÏ¿¡ °¡±î¿öÁú¼ö·Ï Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³ª ÇØ¼öÀÇ ¿µÇâÀ» ¹ÝÁõÇÏ¿´´Ù. ÃѼöÀº ³óµµ´Â Á¶Á÷º°, ÁöÁ¡º°·Î ÀϺΠÂ÷À̸¦ º¸¿´À¸³ª, Àü¹ÝÀûÀ¸·Î ¼öÀº³óÃàÀÇ ¿µÇâÀº ¹Ì¹ÌÇÑ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. ¿µ»êÈ£ÀÇ »ýÅ °Ç°¼º Çâ»óÀ» À§ÇØ ¿Ü·¡Á¾¿¡ ÀÇÇÑ ±³¶õ ¾ïÁ¦, ¹°¸®Àû ¼½ÄÁöÀÇ º¹¿ø µîÀÌ ÇÊ¿äÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| The purpose of this study was to evaluate the ecosystem of Yeongsan Lake using physical, chemical, and biological indicators. We evaluated the integrative ecosystem health using Lentie Ecosystem Health Assessment (LEHA) model, Qualitative Health Evaluation Index (QHEI) model, and chemical water quality. The models of LEHA and QHEI were modified as 10 and 7 metries attributes, respectively. Also, we analyzed bioaccumulation of total mercury on various fish tissues by method of U.S. EPA 7473 using Direct Mercury Analyzer (Model DMA-80). Model values of LEHA model averaged 19 (range: $14{sim}26$, n=15), which indicated a "poor" condition, and had slightly spatial variations. Values of the QHEI in the all sites averaged 72, which were judged as a "fair" to "good" condition. The QHEI values varied from 48 (fair condition) to 99 (good condition) and showed large longitudinal gradients between the upper and lower reach. Conductivity and salinity were increased from the up-lake to downlake reach. Analysis of total mercury in fish tissues showed that levels of total Hg ranged between 0.002 and $0.087;mg;L^{-1}$ depending on the types of tissues. Overall, the ecosystem health in the Yeongsan Lake was judged as a "poor" and the effects of bioaccumulation on the fish tissues were minor. Therefore, it is necessary to keep an efficient management for the lake environment to maintain their ecological health. |
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| Ű¿öµå |
| ecosystem health;fish;LEHA;biological integrity;Yeongsan Lake; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.41, no.2, 2008³â, pp.155-165
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200827448607748)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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