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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.44, no.1, 2011³â, pp.9-21
È­ÁøÆ÷È£ÀÇ ¼öȯ°æº¯È­¿¡ °üÇÑ ¿¬±¸
( The Study of Water Environment Variations in Lake Hwajinpo )
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È­ÁøÆ÷È£¿¡¼­ Àå±â°£ÀÇ ¼öȯ°æº¯È­¸¦ ¾Ë¾Æº¸±â À§ÇØ 2000³âºÎÅÍ 2008³â±îÁö ¿°ºÐ, ¿ëÁ¸»ê¼Ò, ÃÑÀÎ ¹× ÃÑÁú¼Òµî ÀÌ È­ÇÐÀû Á¶»ç¸¦ ÇÏ¿´À¸¸ç, µ¿½Ä¹°ÇöûũſÀº 2007³â°ú 2008³â¿¡ Á¶»çÇÏ¿´´Ù. È­ÁøÆ÷È£¿¡¼­ 2000³âºÎÅÍ 2008³â±îÁö Á¶»çµÈ ¼öÁúÀڷḦ º¸¸é ¼ö¿Â, ¿°ºÐ, Åõ¸íµµ, COD ¹× DO´Â °¢°¢ $2.8{sim}29.4^{circ}C$, 0.23~41.8¢¶, $0.2{sim}2.8;m$, $0.2{sim}20.2;mg;L^{-1}$ ¹× $0.1{sim}17.4;mg;L^{-1}$ÀÇ ¹üÀ§·Î Æò±ÕÀº °¢°¢ $18.0^{circ}C$, 15.7¢¶, 0.7 m, $5.7;mg;L^{-1}$ ¹× $8.0;mg;L^{-1}$À̾ú´Ù. Chl.${alpha}$Àº $0.3{sim}242.5;{mu}g;L^{-1}$À¸·Î Æò±Õ $32.8;{mu}g;L^{-1}$À̾ú´Ù. TP¿ÍTN´Â °¢°¢ $0.024{sim}0.869;mg;L^{-1}$(Æò±Õ 0.091) ¹× $0.240{sim}5.310;mg;L^{-1}$(Æò±Õ 1.235)ÀÇ ¹üÀ§¸¦ º¸¿´´Ù. TN/TP ºñ´Â Æò±Õ 16.4À̾ú´Ù. COD, TP, TN ¹× Chl.${alpha}$ÀÇ ¿¬º¯È­¸¦ º¸¸é COD´Â 2000³â¿¡ $4.83m;mg;L^{-1}$À̾úÀ¸³ª 2008³â¿¡´Â $1.80;mg;L^{-1}$·Î ¸Å³â $0.34;mg;L^{-1}$ °¨¼Ò¸¦ º¸¿´´Ù. TP´Â 2000³â¿¡ $0.07;mg;L^{-1}$ÀÌ¿´À¸³ª 2008³â¿¡´Â $0.05;mg;L^{-1}$·Î Â÷Ãû °¨¼ÒÇÏ¿´´Ù. TNÀº 2000³â¿¡ $1.54;mg;L^{-1}$À̾úÀ¸´Ï 2008³â¿¡´Â $0.77;mg;L^{-1}$·Î ¸Å³â $0.09;mg;L^{-1}$ °¨¼ÒÇÏ¿´´Ù. Chl.${alpha}$Àº 2000³â¿¡ $46.30;{mu}g;L^{-1}$À̾úÀ¸³ª 2008³â¿¡´Â $5.78;{mu}g;L^{-1}$·Î ¸Å³â $4.50;{mu}g;L^{-1}$¾¿ °¨¼ÒÇÏ¿´´Ù. È­ÁøÆ÷È£ÀÇ Orgnic-N, $NO_3$-N, $NH_3$-N ¹× $NO_2$-NÀÇ Æò±Õ Á¸Àç Çüź° ±¸¼º ºñÀ²Àº °¢°¢ 78.9, 7.0, 12.4 ¹× 0.8%·Î ´ëºÎºÐ À¯±âÁú¼Ò ÇüÅÂÀ̾ú´Ù. ºÎ¿µ¾çÈ­µµ Áö¼ö´Â ³²È£¿Í ºÏÈ£¿¡¼­ 2000³â¿¡ °¢°¢ 67°ú 63¿¡¼­ 2008³â¿¡´Â 63°ú 59·Î °¨¼ÒÇÏ¿´´Ù. È­ÁøÆ÷ ³²È£¿Í ºÏÈ£¿¡¼­ 2007³â°ú 2008³â Á¶»ç±â°£ µ¿¾È ÃâÇöÇÑ ½Ä¹°ÇöûũſÀº ÃÑ 56¼Ó 69Á¾À̾ú´Ù. ½Ä¹° ÇöûũſÀÇ ÇöÁ¸·®Àº ³²È£°¡ ºÏÈ£°¡ °¢°¢ 18~21,961 ¹× $153{sim}10,070;cells;mL^{-1}$ÀÇ ¹üÀ§·Î ³²È£¿¡¼­ ´õ ¸¹¾ÒÀ¸¸ç, ³² ºÏÈ£ ¸ðµÎ 2007³â 7Àª¿¡ ÃÖ¼Ò¸¦ º¸¿´´Ù. ¿ìÁ¡Á¾Àº ³²È£ÀÇ °æ¿ì 2007³â 5¿ù¿¡ Asterococcus superbus, 9¿ù¿¡ Lyngbya sp., 11¿ù¿¡ Trachelomonas spp.À̾úÀ¸¸ç, 2008³â 7¿ù¿¡´Â Anabaena spiroides·Î ½Ã±â¿¡ µû¶ó Å©°Ô ´Ù¸¥ ¾ç»óÀ» º¸¿´´Ù. ³²È£¿Í ºÏÈ£ÀÇ Á¾ ´Ù¾ç¼º Áö¼ö´Â 0.87~1.98 (Æò±Õ 1.41) ¹× 0.42~1.47 (Æò±Õ1.07)·Î ³² ºÏÈ£ ¸ðµÎ 2008³â 5¿ù¿¡ ³ô¾Ò´Ù. È­ÁøÆ÷È£¿¡¼­ ÃâÇöÇÑ µ¿¹°ÇöûũſÀº ÃÑ 31¼Ó 35Á¾À̾ú´Ù. ³²È£ÀÇ ¿ìÁ¡Á¾Àº 2007³â 5, 7¿ù°ú 2008³â 5, 11¿ù¿¡´Â ¿ä°¢·ùÀÇ À¯»ýÀ̾úÀ¸³ª, 2007³â 9¿ù¿¡´Â ¹Ìµ¿Á¤¿ø»ýµ¿¹°, 2008³â 8¿ù¿¡´Â Brachionus plicatilisÀ̾ú´Ù. ºÏÈ£ÀÇ ¿ìÁ¡Á¾Àº 2007³â 7¿ù°ú 11¿ù¿¡´Â Áö°¢·ùÀÎ Asplanchna sp.À̾úÀ¸³ª ±× ÀÌ¿ÜÀÇ ½Ã±â¿¡´Â ¿ä°¢·ùÀÇ À¯»ýÀ̾ú´Ù. µ¿¹°ÇöûũſÀÇ ¹Ðµµ´Â ³²È£¿¡¼­ $80{ imes}10^3{sim}3,902{ imes}10^3ind.;L^{-1}$, ºÏÈ£¿¡¼­ $88{ imes}10^3{sim}2,106{ imes}10^3;ind.;L^{-1}$·Î ³²È£¿¡¼­ ´õ ³ô¾Ò´Ù. Á¾ ´Ù¾ç¼ºÁö¼ö´Â ³²È£¿Í ºÏÈ£°¡ °¢°¢ 0.53~0.147 (Æò±Õ 0.83) ¹× 0.66~1.46 (Æò±Õ 1.09)ÀÇ ¹üÀ§·Î ³² ºÏÈ£ ¸ðµÎ 2008³â 7¿ù¿¡ ³ô¾Ò´Ù.
This study is conducted to know the change in water environment of Lake Hwajinpo from 2000 to 2008 with physico-chemical parameters; salinity, dissolved oxygen, total phosphorus and total nitrogen and others. And zooplanktons and phytoplanktons were studied from 2007 to 2008. From the water quality data of Lake Hwajinpo from 2000 to 200S; water temperature, salinity, transparency, chemical oxygen demand and dissolved oxygen ranges are $2.8{sim}29.4^{circ}C$, 0.23~33.2¢¶, $0.2{sim}1.8;m$, $0.2{sim}20.2;mg;L^{-1}$ and $0.1{sim}17.4;mg;L^{-1}$ and the average values are $18.0^{circ}C$, 15.7¢¶, 0.7 m, $5.7;mg;L^{-1}$ and $8.0;mg;L^{-1}$, respectively. Total phosphorus (TP) and total nitrogen (TN) ranges are $0.024{sim}0.869;mg;L^{-1}$ (average 0.091) and $0.240{sim}5.310;mg;L^{-1}$ (average 1.235). Average TN/TP ratio is 16.4. The annual variations in COD, TP, TN and Chl.${alpha}$ are compared. COD in 2000 is $4.83;mg;L^{-1}$ and 2008 is $1.80;mg;L^{-1}$ which is reduced by $0.34;mg;L^{-1}$ every year. TP in 2000 is $0.07;mg;L^{-1}$ and 2008 is $0.05;mg;L^{-1}$ reduced gradually. Yearly reduction in TN is $0.09;mg;L^{-1}$, in 2000 and 2008 the values are $1.54;mg;L^{-1}$ and $0.77;mg;L^{-1}$ respectivly. Chl.${alpha}$ in 2000 is $46.30;{mu}g;L^{-1}$ and $5.78;{mu}g;L^{-1}$ in 2008; yearly reduction is $4.50;{mu}g;L^{-1}$. The tropic state index (TSI) in south and north parts of Lake Hwajinpo in 2000 are 67 and 63 which are reduced to 63 and 59 in 2008 respectively. North and south part of Lake Hwajinpo have 67 species of phytoplankton under 47 families in 2007 and 2008. Dominant species in south part in 2007 are; Asterococcus superbus in May, Lyngbya sp. in September and Trachelomonas spp. in November and in 2008 Anabaena spiroides in August are abundant and varies with time. Zooplankton species in Lake Hwajinpo are 25 of 25 families. Dominant species in south part in May and August 2007 and May and November in 2008 Copepoda larvae and in September 2007 Protozoa spp. of Protozoan and Brachionus plicatilis and Brachionus urceolaris of Cladocera in August 2008. Dominant species in north part Asplanchna sp. of Cladecera in August and November 2007 and rest of the time are larvae of Copepoda. In this way, the water quality of Lake Hwajinpo is changing with slow rate in the long period specially nutrients concentration (TP, TN etc) is decreasing.
 
Ű¿öµå
Lake Hwajinpo;brackish lagoon;nutrients;TSI;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.44, no.1, 2011³â, pp.9-21
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201118565335334)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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