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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.40, no.2, 2007³â, pp.234-243
Á¶·ù¼ºÀåÀáÀç·Â Á¶»ç¸¦ ÀÌ¿ëÇÑ Ã»°èõ º¹¿ø ÀÌÈÄ ¼öÁú Æò°¡
( Evaluation of Water Quality after Rehabilitation of Cheonggye Stream using AGP Test )
¹Ú¸íȯ;Ȳ¼øÁø;¼­¹Ì¿¬;±è¿ëÀç;±è¹éÈ£; °Ç±¹´ëÇб³ ȯ°æ°úÇаú;°Ç±¹´ëÇб³ ȯ°æ°úÇаú;¼­¿ï½Ã º¸°Çȯ°æ¿¬±¸¿ø;´ëÁø´ëÇб³ »ý¸í°úÇаú;ÇѾç´ëÇб³ »ý¸í°úÇаú;
 
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û°èõ º¹¿øÀÌÈÄ ÇÏõ¼öÁúÀÇ »ýÅÂÇÐÀû Æò°¡¸¦ Çϱâ À§ÇÏ¿© û°èõÀ» ºñ·ÔÇÑ ÀÎÁ¢¼ö¿ª Áß¶ûõ ¹× ÇѰ­ º»·ù¸¦ ´ë»óÀ¸·Î °­¿ì ÀüÈÄ Á¶·ù ¹× ¼öÁúº¯È­¿Í ÇöÀå¼ö¿¡ ´ëÇÑ Á¶·ù¼ºÀåÀáÀç·Â(AGP)À» Á¶»çÇÏ¿´´Ù. Á¶»ç´Â û°èõ(Á¤Á¡ 1, 2), Áß·®Ãµ(Á¤Á¡ 3), µÎ ÇÏõÀÇ ÇÕ·ùºÎ(Á¤Á¡ 4), ÇѰ­ º»·ùÀÇ »ó·ù(Á¤Á¡ 5)¹× ÇÏ·ù(Á¤Á¡ 6)µî ÃÑ 6°³ Á¤Á¡À» ¼±Á¤ÇÏ¿© 2006³â Çϰè(°­¿ì ÀÌ Àü 7¿ù 25ÀÏ, °­¿ì ÀÌ ÈÄ 8¿ù 28ÀÏ)¿¡ °¢°¢ 1ȸ¾¿ ½Ç½ÃÇÏ¿´´Ù. ÇÑÆí, AGPÁ¶»ç¸¦ À§ÇØ °¢ Á¤Á¡¿¡¼­ ä¼öÇÑ ÇöÀå¼ö¸¦ °ø½ÃÁ¾ ³²Á¶ Microcystis aeruginosa ¹è¾ç°è¿¡ 1/6, 2/6, 3/6¾¿ °¢°¢ ÷°¡Çϰí, ¿Âµµ $25^{circ}C$, ±¤Á¶°Ç 100 ${mu}mol$ photons $m^{-2}s^{-1}$ (14h : 10h LD cycle)¿¡¼­ 11Àϰ£ ¹è¾çÇÏ¿´´Ù. Á¶»ç°á°ú, ÃÑÁú¼Ò´Â Áß¶ûõ°ú û°èõÀÇ ÇÕ·ùºÎ¿¡¼­ ³ô¾Ò´Âµ¥, ƯÈ÷ ÈÄÀÚ´Â °­¿ì ÀüÈÄ °¢°¢ 14.4, 18.5 mg $L^{-1}$¸¦ ±â·ÏÇÏ¸ç °¡Àå ³ô¾Ò´Ù. ÃÑÀÎ ¿ª½Ã Áß¶ûõ°ú û°èõÀÇ ÇÕ·ùºÎ¿¡¼­ ³ô¾Ò´Âµ¥, ÃÑÁú¼ÒÀÇ °æ¿ì¿Í °°ÀÌ Á¤Á¡ 4ÀÇ ÃÑÀÎÀº °­¿ì ÀüÈÄ °¢°¢ 1.1, 1.3 mg $L^{-1}$¸¦ ±â·ÏÇÏ¸ç °¡Àå ³ô¾Ò´Ù. ¿±·Ï¼Ò-${alpha}$´Â °­¿ì ÈÄ¿¡´Â Áß¶ûÇϼöó¸®Àå ¹æ·ùÁöÁ¡À» Æ÷ÇÔÇϰí Àִ û°èõ°ú Áß¶ûõÀÇ ÇÕ·ùºÎÀÎ Á¤Á¡ 4¿¡¼­ ¸Å¿ì ³ô¾ÒÀ¸¸ç °¡Àå ¿ìÁ¡ÇÑ Á¶·ù´Â Cyclotella sp.·Î Á¶»çµÇ¾ú´Ù. ÇöÀå¼ö¿¡ ´ëÇÑ AGPÁ¶»ç°á°ú, °­¿ì Àü¿¡´Â ´ëÁ¶±¸¿¡ ºñÇØ ¸ðµç Á¤Á¡¿¡¼­ ³ôÀº ¼ºÀåÀ» º¸¿´À¸³ª, °­¿ì ÈÄ¿¡´Â ´ëÁ¶±¸¿¡ ºñÇØ Àü¹ÝÀûÀ¸·Î ³·Àº ¼ºÀåÀ» ³ªÅ¸³Â´Ù. ´Ù¸¸, °­¿ì ÈÄ¿¡´Â ÇöÀå¼ö ÷°¡·®ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ´ëÁ¶±¸¿Í Å« Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Âµ¥ ÀÌ´Â °­¿ì¿¡ ÀÇÇÑ ¿µ¾ç¹°ÁúÀÇ Áõ°¡°¡ ¿øÀÎÀÎ °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. µû¶ó¼­ û°èõÀ» Æ÷ÇÔÇÑ Á¶»çÇÏõµéÀº Æò»ó½Ã¿¡´Â ºñ±³Àû ¾ÈÁ¤µÈ »ýŰ踦 À¯ÁöÇϰí ÀÖÀ¸³ª ÁýÁß°­¿ì½Ã ¿µ¾ç¹°Áú À¯ÀÔÀ¸·Î ÀÎÇÑ ÇÏ·ùÀÇ Á¶·ù¹ø½Ä °¡´É¼ºÀÌ ¿ì·ÁµÇ¸ç, ƯÈ÷ Áß·®ÃµÀÇ ¼öÁú°³¼±ÀÌ ½Ã±ÞÇÑ °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù.
Algal growth potential (AGP) test was performed to evaluate the water quality and changes in phytoplankton communities before and after a heavy rain event at six sampling sites in Cheonggye Stream (St. 1 and 2), Jungnang Stream (St. 3 and 4), and Lower part of Han River System (St. 5 and 6) after rehabilitation of Cheonggye Stream, October 2005. To test AGP on each sampling site, cyanobacterium Microcystis aeruginosa was applied as a standard alga. Total nitrogen (TN) showed high values at Jungnang Stream, while St. 4 recorded highest values in this study. However, TN values of Cheonggye Stream and Lower Part of Han River showed similar levels. Total phosphate (TP) also showed high values at Jungnang Stream, while St. 4 recorded highest. However, TP in Cheonggye Stream were extremely low levels. Although chlorophyll-${alpha}$ (chi-${alpha}$) contents before the rain event were similar through the sampling sites, chl-${alpha}$ after the rain increased dramatically at Jungnang Stream and Lower part of Ban River. In particular, after the rain, TP was the highest at St. 4, where Cyclotella sp. dominated the phytoplankton community. When compared with control, AGP values before the rain were comparatively low in all sites, while those after the rain highly increased with the dose-dependently of field water added, due perhaps to the increased nutrients by rainfall. Similar results were observed in Cheonggye Stream. Therefore, for the aesthetic fostering for the citizens, although Cheonggye Stream was Presently being sustained by treated water supply, they have a potential of outbreak of phytoplankton by the increased nutrients supply when a heavy rain comes.
 
Ű¿öµå
AGP test;Cheonggye Stream rehabilitation;Microcystis aeruginosa;rain;water quality;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.40, no.2, 2007³â, pp.234-243
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200709905950804)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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