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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.36, no.2, 2003³â, pp.161-171
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µµ½ÉÀÇ ¾èÀº ÀΰøÈ£ÀÎ Àϰ¨È£ÀÇ ¼öÁúº¯ÈƯ¼º°ú ÅðÀûȯ°æÀÇ Æò°¡
( Evaluation of Water Quality Variation and Sediment of a Shallow Artificial Lake (Lake llgam) in Located the Metropolitan Area ) |
| ±èÈ£¼·;°íÀ縸;Ȳ¼øÁø; °Ç±¹´ëÇб³ Áö¿ª°Ç¼³È¯°æ°øÇаú;(ÁÖ)ûȣÀÌ¿£¾¾;°Ç±¹´ëÇб³ Áö¿ª°Ç¼³È¯°æ°øÇаú;
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| º» ¿¬±¸´Â µµ½É¿¡ À§Ä¡ÇÑ ¾èÀº ÀΰøÈ£¼öÀÇ ¼öÁúº¯È Ư¼º, Á¦ÇÑ¿µ¾ç¿° ¹× ÅðÀû¹° Ư¼ºÀ» Æò°¡Çϱâ À§Çؼ ÀÌ·ç¾îÁ³´Ù. Àϰ¨È£´Â ¿¬ Æò±Õ ¿±·Ï¼Ò a($77.2{pm}36.6;{mu}g/l)¿Í TP ($66.6{pm}20.5;{mu}g/l)³óµµ ±×¸®°í ¿µ¾ç»óÅÂÁö¼ö (>60)¸ðµÎ¸¦ Åä´ë·Î ÇÒ ¶§ ¸Å¿ì ºÎ¿µ¾ç»óÅ¿´´Ù. °áºù½Ã±â¿Í ÇØºùµÇ´Â ½Ã±â¿¡ ¼öÃþ³» ¹«±âÁú¼Ò¿Í ÀÎÀÇ ¼öü³» ³óµµ°¡ Áõ°¡ÇÏ¿´´Ù°¡ ¿©¸§Ã¶¿¡´Â °¨¼ÒÇÏ´Â °èÀýÀûÀÎ º¯È°¡ ³ªÅ¸³µ´Ù. ¼öü³» DIN/DIP(¹«°Ôºñ)ºñÀ²°ú TSIÆíÂ÷ºÐ¼® ±×¸®°í »ý¹°°ËÁ¤ (AGP)½ÇÇèÀ» ÅëÇØ¼ Áú¼Ò¿Í ÀÎ ¸ðµÎ°¡ ½Ä¹°ÇöûũſÀÇ ¼ºÀåÀ» Á¦ÇÑÇÔÀÌ Á¦½ÃµÇ¾ú´Ù. TSIÆíÂ÷ºÐ¼® °á°ú¿¡¼´Â 1³â Áß »ý¹°°ËÁ¤À» ÅëÇØ¼µµ ÀÎ Á¦ÇÑÀÌ ¿¹ÃøµÈ ¹Ù ÀÖ´Â 9¿ùºÎÅÍ 11¿ù¿¡ Àΰú Áú¼Ò ¸ðµÎÀÇ ½Ä¹°Çöûũſ ¼ºÀå¿¡ ´ëÇÑ Á¦ÇÑÁ¤µµ°¡ °¡Àå Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÅðÀû¹°³» ÀÎ ÇÔ·®(313${pm}$155mgP/kg)Àº °èÀý¿¡ µû¸¥ º¯È¸¦ ³ªÅ¸³µ°í, ÀοëÃâ·üÀº pH9¿¡¼ 0.29${pm}$0.02Pmg $m^{-2}$ $day^{-1}$·Î °¡Àå ³ô¾Ò´Ù. Áú¼ÒÇÔ·®Àº Æò±Õ 4,452${pm}$283.0 mg N/kg¿´À¸¸ç °èÀý¿¡ µû¸¥ Å« Â÷ÀÌ´Â ¾ø¾ú´Ù. ÀÌ·¯ÇÑ °á°úµéÀº ÅðÀû¹°ÀÌ Á¦ÇÑ¿µ¾ç¿°ÀÇ °ø±Þ¿øÀ¸·Î¼ÀÇ Áß¿äÇÑ ¿ªÇÒÀ» ¼öÇàÇϸç, ÅðÀû¹°³» ÀÎ ÇÔ·®ÀÇ °èÀý¿¡ µû¸¥ º¯È°¡ Á¶·ùÀÇ »ý¹°·®À» Á¶ÀýÇÒ ¼ö ÀÖÀ½À» ÀǹÌÇÑ´Ù. |
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| The present study evaluated water quality variation, limiting nutrient, and sediment of a shallow eutrophic lake (Lake Ilgam) in the metropolitan area from 2000 to 2002. According to annual mean chl.a ($77.2{pm}36.6;{mu}g/l) and TP ($66.6{pm}20.5;{mu}g/l) concentration and trophic state index (>60), Lake llgam was in very eutrophic status. Both inorganic nitrogen ($NH_3-N$ and $NH_3-N$) and phosphorus (SRP) concentrations in the water column increased during winter and spring, but decreased during summer followed by the phytoplankton development. Evidence for phosphorus and nitrogen as being the potential limiting nutrients for phytoplankton growth was supported by the ratio of DIN/DIP (by mass) (${sim}$835.8), TSI derivations analysis, and algal growth potential bioassay. Based on the results of TSI derivations, strong nutrient limitation by both N and P occurred from September to November when P content in sediment (114.6 mg P/kg) was relatively low compared with the summer. Sediment contained a large amount of nitrogen (TKN: 4,452${pm}$283.0mg N/kg dry sediment). Phosphorus content in sediment (TP: 313${pm}$155 mg P/kg) was relatively low with temporal change. P release rate (0.29${pm}$0.02 mg $m^{-2}$ $day^{-1}$) was high under the aerobic condition at pH 9. These results indicate that the sediment could play an important role as a source of a limiting nutrient, and temporal change of P content in the sediment is closely related with water quality, especially algal biomass change in Lake llgam. |
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| Ű¿öµå |
| Shallow artificial lake;Eutrophic;AGP;DIN/DIP ratio;TSI;P release;Sediment; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.36, no.2, 2003³â, pp.161-171
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200318317181171)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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