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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.3, 2000³â, pp.311-318
½Ä¹°Çöûũſ ºÐÆ÷µµ¿¡ µû¸¥ ¿î¹®È£ÀÇ ¼±ÅÃÃë¼ö ¼ö½É °áÁ¤
( Determination of Optimum Water Intaking Depth Based on Phytoplankton Distribution in Unmun Reservoir )
¹éÀÎÈ£;±èöȣ;ÀÌÁ¤È£; Çѱ¹¼öÀÚ¿ø°ø»ç;ÁøÁÖ»ê¾÷´ëÇб³ ¹Ì»ý¹°°øÇаú;´ë±¸´ëÇб³ °úÇб³À°ÇкÎ;
 
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½Ä¹°Çöûũſ ±ºÁýÀÇ ºÐÆ÷ Ư¼º¿¡ µû¸¥ ¿î¸ðÈ£ÀÇ ÃÖÀû Ãë¼ö¼ö½É °ËÅ並 ¸ñÀûÀ¸·Î 1998³â 2¿ùºÎÅÍ 10¿ù±îÁö Á¶»ç¸¦ ½Ç½ÃÇÏ¿´´Ù. ½Ä¹°Çöûũſ ÃâÇöÁ¾Àº 7°­, 12¸ñ, 28°ú, 51¼ÓÀÇ 75Á¾, 4º¯Á¾ÀÎ ÃÑ 79 taxa¿´´Ù. 2¿ùºÎÅÍ 7¿ù±îÁö´Â 4¿ùÀ» Á¦¿ÜÇÏ°í ±ÔÁ¶°­ÀÌ ¿ìÁ¡Á¾À̾úÀ¸¸ç, 8¿ùÀº °¥»öÆí¸ðÁ¶°­ÀÇ Rhodomonas sp.°¡ ¿ìÁ¡Á¾À̾úÀ¸³ª 9¿ù°ú 10¿ùÀº ³²Á¶°­ÀÇ Microcystis ichthyoblabe°¡ ¿ìÁ¡Á¾À̾ú´Ù. ½Ä¹°Çöûũſ ÇöÁ¸·®Àº 10¿ùÀÌ 122,800 cells/mL·Î °¡Àå ¸¹¾ÒÀ¸¸ç, 5¿ùÀÌ °¡Àå ÀûÀº 415 cells/mL·Î ³ªÅ¸³µ´Ù. 2¿ùºÎÅÍ 5¿ù±îÁö´Â ¼ö½Éº° ½Ä¹°ÇöûũſÀÇ ÇöÁ¸·® º¯È­´Â ½ÉÇÏÁö ¾Ê¾ÒÀ¸³ª, 6¿ùºÎÅÍÀÇ °í¼ö¿Â±â¿¡´Â Ç¥Ãþ¼ö¸¦ ºñ·ÔÇÑ Ç¥¼öÃþ(øúâ©öµ)ÀÇ ½Ä¹°ÇöûũſÀÇ ¾çÀÌ ÇØ¼öÃþ(ä¢â©öµ)º¸´Ù ÈξÀ ³ô°Ô ³ªÅ¸³µ´Ù. 5,000 cells/mL ÀÌ»óÀÇ ÇöÁ¸·®À» º¸ÀÎ ¼ö½ÉÀº 6¿ùÀÇ °æ¿ì Ç¥Ãþ¼ö·ÎºÎÅÍ 9mÀÇ ¹üÀ§À̸ç, 9¿ùÀº 6m±îÁö, ±×¸®°í 10¿ùÀº ´ÜÁö Ç¥Ãþ¼ö¿¡¸¸ ±¹ÇѵǾú´Ù. ¼ö¿Â°ú ½Ä¹°Çöûũſ·®ÀÇ 2°¡Áö ¿äÀθ¸À» °í·ÁÇÑ ÀûÁ¤ Ãë¼ö ¼ö½ÉÀº Àüü ¼ö½ÉÀÇ ÃÑ ½Ä¹°Çöûũſ ÇöÁ¸·®À» ÃÖ¼Ò 75.4%¿¡¼­ ÃÖ´ë 98.0%±îÁö ¹èÁ¦Çϸç, ¼ö¿ÂÀº 18.3${sim}$20.0$^{circ}C$$ ¹üÀ§¸¦ ³ªÅ¸³»´Â 6mÀÇ ¼ö½ÉÀÌ Å¸´çÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
The purpose of this study was to determine the optimum water intaking depth for water treatment plant based on the changes of phytoplankton distributions in Unmun reservoir. Sampling was carried around of intaking tower near the Dam site at monthly intervals from February to Ocotber in 1998. Total 79 phytoplankton taxa were observed and they were classified into 4 varieties, 75 species within 51 genera. Diatoms were mainly dominated from February to July. However Rhodomonas sp. was a dominant species in August, and Microcystis ichthyblabe in September and October. Cell density of 122,800 cells/mL in October was the highest, and 415 cells/mL in May was the lowest. The pattern of vertical distribution was similar until May; however, the cell density in the epilimnion was much higher than it in the hypolimnion during the periods with the high water temperature over $20^{circ}C$ since June. The water depths showing over 5,000 cells/mL ranged from the surface to 9m in June, surface to 6m in September, and on the only surface in October. Based on water temperature and phytoplankton vertical distribution, the depth of 6m appeared to be the optimum intaking depth far water treatment plant: 75.4 to 98.0% of phytoplankton cell densities could be avoided and the temperature over $18.3^{circ}C$ was preserved to prevent cold water damage for rice growth at the water depth during cyanobacterial blooming period in Unmun reservoir.
 
Ű¿öµå
Cold water damage;Distribution;Intaking water depth;Phytoplankton;Unmun resevoir;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.3, 2000³â, pp.311-318
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317176065)
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