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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.3, 2000³â, pp.260-266
¾Èµ¿È£ ¼öÁúÀÇ Àå±âÀûÀÎ º¯È­
( Long-term Variation of Water Quality in Lake Andong )
±Ç»ó¿ë;±è¹üö;¹ÚÁÖÇö;Çã¿ì¸í; »ïô´ëÇб³ ȯ°æ°øÇаú;°­¿ø´ëÇб³ ȯ°æ°úÇаú;°­¿ø´ëÇб³ ȯ°æ°úÇаú;»ïô´ëÇб³ ȯ°æ°øÇаú;
 
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¾Èµ¿È£ÀÇ °­¿ì·®Àº ¿¬Æò±Õ ¾à 1,076mmÀ̸ç, ¿¬°£ ¼öÀ§º¯È­´Â ¾à 27m·Î º¯È­ÆøÀÌ ºñ±³Àû Å©´Ù. Ç¥Ãþ¼öÀÇ ¼ö¿ÂÀº °èÀýº°·Î 4${sim}$28$^{circ}C$ ¹üÀ§¸¦ º¸¿´À¸¸ç, È¥Çսñâ(turnover)ÀÇ ¼ö¿ÂÀº 4${sim}$5$^{circ}C$ ³»¿ÜÀÌ¿´´Ù. ¿¬µµº°·Î ÇÏÀý±âÀÇ ÃÖÀú Åõ¸íµµ °ªÀº '93³âºÎÅÍ '98³â±îÁö °¢°¢ 2.0, 2.1, 1.8, 1.5, 1.2 ¹× 1.2m·Î ¸Å³â Á¡Â÷ ³·¾ÆÁö°í ÀÖ´Ù. ʵµ´Â °­¿ì·®ÀÌ ºñ±³Àû ¸¹¾Ò´ø '97³â¿¡ È£¼ö ÀüÃþ¿¡¼­ 60${sim}$70 NTU·Î ³ô¾Ò´Ù. Ç¥Ãþ¼ö (0${sim}$5 m)ÀÇ Æò±Õ ÃÑÀÎ (TP) ³óµµ´Â ¾à 21 mgP/m$^{3}$À¸·Î '93³â¿¡ 11${sim}$30 mgP/m$^{3}$ ¹üÀ§¿´À¸³ª, '98³â¿¡´Â 18${sim}$42 mgP/m$^{3}$À¸·Î ¸Å³â 1.85 mgP/m$^{3}$ ¾¿ Áõ°¡ÇÏ¿´´Ù. ÃÑÁú¼Ò (TN)ÀÇ Ç¥Ãþ Æò±Õ ³óµµ´Â '93³â¿¡ 1.81${sim}$2.96 mgN/LÀÇ ¹üÀ§À̾úÀ¸³ª, '98³â¿¡´Â 1.48${sim}$2.57 mgN/L·Î Á¡Â÷ °¨¼ÒÇÏ¿´´Ù. TN/TP ¹«°ÔºñÀÇ ¿¬º¯È­¸¦ º¸¸é '93³â¿¡ 82${sim}$281À̾úÀ¸³ª, '98³â¿¡´Â 21${sim}$143À¸·Î Å©°Ô °¨¼ÒµÇ¾ú´Ù. ¿ëÁ¸¹«±âÀÎ (DIP)Àº ¿¬Æò±Õ 3.6 mgP/m$^{3}$À̾úÀ¸¸ç, Áú»ê¼ºÁú¼Ò (NO$_{3}$-N)´Â ¿¬Æò±Õ 1.50 mgN/LÀ¸·Î '95³â ÀÌÈÄ Á¡Â÷ ³·¾ÆÁö°í ÀÖ´Ù. ¿±·Ï¼Ò a ³óµµÀÇ ÇÏ°è Æò±Õ Ç¥Ãþ(0${sim}$5 m) °ªÀº '93³âºÎÅÍ '98³â±îÁö °¢°¢ 4.8, 11.2, 6.4, 17.6, 10.0 ¹× 5.0 mg/m$^{3}$À̾ú´Ù. µû¶ó¼­ ¾Èµ¿È£´Â ÃÑÀÎ, ÃÑÁú¼Ò ¹× ¿±·Ï¼Ò ³óµµ·Î º¼ ¶§ Áß¿µ¾çÈ£¿¡¼­ ºÎ¿µ¾çÈ£ÀÇ »çÀÌ¿¡ ÀÖ´Â °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Water quality parameters were surveyed in Lake Andong. Turbidity, temperature, secchi disc transparency (SD), phosphorus, nitrogen and chlorophyll a concentration were measured at dam site from July 1993 to December 1998. Minimum transparency in summer was only about 2 meters in 1993 and 1994, but it decreased to about 1 meter in 1997 and 1988. Total phosphorus concentration of the epilimnion increased slightly from $11{sim}30;mgP/m^3$ in 1993 to $18{sim}42;mgP/m^3$ in 1998. Total nitrogen concentration of the epilimnion decreased slightly from $1.81{sim}2.96;mgN/L$ in 1993 to $1.48{sim}2.57;mgN/L^3$ in 1998. TN/TP weight ratio decreased from $82{sim}281$ in 1993 to $21{sim}143$ in 1998 due to the increase of phosphorus concentration and the decrease of nitrogen concentration. Dissolved inorganic phosphorus concentration and the decrease of nitrogen concentration. Dissolved inorganic phosphorus and nitrate nitrogen concen tration of the epilimnion were in the range of $0.9{sim}5.3;mgP/m^3$ and $1.36{sim}1.68;mgN/L$, respectively. Chlorophyll a concentration in summer was in the range of $11.0{sim}19.1;mg/m^3$ in 1994, 1996 and 1997, but it decreased to $2.3{sim}6.5;mg/m^3$ in 1998. Trophic state of Lake Andong can be classified as mesotrophic to eutrophic from TP, TN and chlorophyll a concentration.
 
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Lake Andong;Water quality;Total phosphorus;Total nitrogen;Chlorophyll a;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.3, 2000³â, pp.260-266
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317176023)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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