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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.4, 2000³â, pp.374-379
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( The Oxygen Production and Consumption in Lake Paldang )
È«¼±Èñ;¼®Á¤Çö;±èµ¿ÁÖ;¹Ú°æ¹Ì;Àü¼±¿Á;¾Èż®; °­¿ø´ëÇб³ ȯ°æ°úÇаú;°­¿ø´ëÇб³ ȯ°æ°úÇаú;°­¿ø´ëÇб³ ȯ°æ°úÇаú;°­¿ø´ëÇб³ ȯ°æ°úÇаú;°­¿ø´ëÇб³ ȯ°æ°úÇаú;°­¿ø´ëÇб³ ȯ°æ°úÇаú;
 
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ÆÈ´çÈ£¿¡¼­ À¯±â¹°ÀÇ µ¿Å¸¦ ÆÄ¾ÇÇϱâ À§ÇÏ¿© ¿ëÁ¸ À¯±â¹°°ú sediment trapÀ¸·Î äÁýÇÑ À¯±â¹° ±×¸®°í, ultrafiltrationÀ¸·Î ³óÃàÇÑ °íºÐÀÚ À¯±â¹°ÀÇ »ê¼Ò ¼Ò¸ð·®À» ÃøÁ¤ÇÏ¿´°í, ¿±·Ï¼Ò a ³óµµ, ÃÑÀΰú ÃÑÁú¼Ò¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¿±·Ï¼Ò a ³óµµ´Â 4¿ù 0m ¼ö½É¿¡¼­ 57.7 mg/m$^{3}$À¸·Î °¡Àå ³ôÀº °ªÀ̾ú°í, ´Ù¸¥ °èÀý¿¡´Â 5.5${sim}$14.2 mg/m$^{3}$À¸·Î ³ªÅ¸³µ´Ù. ¼ö½É 5m¿Í 20 m¿¡ ¼³Ä¡ÇÑ sediment trapÀ¸·Î äÁýÇÑ ½Ã·áÀÇ ¿±·Ï¼Ò a ³óµµ´Â 5¿ù¿¡ °¢°¢ 2779.5, 9044.8 mg/m$^{3}$À¸·Î ´Ù¸¥ °èÀýº¸´Ù 6¹è ÀÌ»ó ³ôÀº °ªÀ̾ú°í, ¹° ½Ã·á¿Í ºñ±³Çϸé 49¹è ÀÌ»óÀÇ ³ôÀº ³óµµ¿´´Ù. ¹°½Ã·áÀÇ »ê¼Ò¼Ò¸ðÀ²Àº 0.4${sim}$0.5 mg O$_{2}{cdot}$l$^{-1}{cdot}$day$^{-1}$·Î ¼ö½Éº°, °èÀýº°·Î Å« Â÷À̸¦ ³ªÅ¸³»Áö ¾Ê¾Ò´Ù. ¶Ç, °íºÐÀÚ À¯±â¹°ÀÇ °æ¿ì¿¡´Â 0.01${sim}$0.04 mg O$_{2}{cdot}$l$^{-1}{cdot}$day$^{-1}$ÀÇ °ªÀ¸·Î °íºÐÀÚ À¯±â¹°Àº »ê¼Ò¸¦ °ÅÀÇ ¼Ò¸ðÇÏÁö ¸øÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¼ö½É 5m¿¡ ¼³Ä¡µÈ sediment trapÀ¸·Î äÁýÇÑ ½Ã·á¿¡¼­ »ê¼Ò¼Ò¸ðÀ²Àº 0.48${sim}$0.69 mg O$_{2}{cdot}$l$^{-1}{cdot}$day$^{-1}$À̾ú°í, 20 m ¼ö½É¿¡¼­ äÁýµÈ ½Ã·á¿¡¼­´Â 0.88${sim}$1.04 mg O$_{2}{cdot}$l$^{-1}{cdot}$day$^{-1}$ÀÌ¿´´Ù. ¼ö½É¿¡ µû¸¥ À¯±â¹°ÀÇ º¯È­¸¦ º¸¸é, 5m¿¡¼­ äÁýµÈ À¯±â¹°ÀÇ ¿±·Ï¼Ò a ³óµµ´Â 20 m¿¡¼­ ȸ¼öµÈ À¯±â¹°ÀÇ 30% Á¤µµÀ̳ª, »ê¼Ò¼Ò¸ðÀ²Àº 70% ¼öÁØÀÌ´Ù. ÀÌ·¯ÇÑ °á°ú¿¡¼­ ÆÈ´çÈ£¿¡¼­´Â Ç¥Ãþ¿¡¼­ ½Ä¹°Çöûũſ¿¡ ÀÇÇÏ¿© »ý¼ºµÈ À¯±â¹° Áß ÀúºÐÀÚ À¯±â¹°Àº ½±°Ô »ê¼Ò¸¦ ¼Ò¸ðÇÏ¿© ºÐÇØµÇÁö¸¸, °íºÐÀÚ À¯±â¹°Àº ±×´ë·Î ÀúÃþ¿¡ ½×¿©, ÀúÁúÅäÀÇ »ê¼Ò ¼Ò¸ðÀ²¿¡ ¿µÇâÀ» ÁÖ°í ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù.
To elucidate the degradation mechanisms of organic materials in Lake Paldang, oxygen consuming rates in the water column, high molecular weight (HMW) organic materials and aggregates were analyzed. Also the chlorophyll a concentrations and environmental factors were measured three times in 1999. The concentrations of chlorophyll a ranged $5.5{sim}14.2;mg/m^3$ with the highest peak of $57.7;mg/m^3$ at the surface water in April. Chlorophyll a concentration of aggregates retrieved from traps in 5 m and 20 m depths in May were 2779.5, $9044.8;mg/m^3$, respectively. Those vlaues were more than 6 times higher compared with other months, and more than 49 times higher than water column chlorophyll a. Oxygen consuming rates of water column were in the narrow range of $0.4{sim}0.5;mg;O_2;l^{-1};day^{-1}$. HMW organic materials were using only small amount of oxygen, $0.01{sim}0.04;mg;O_2;l^{-1};day^{-1}$. The aggregates retrieved from 5 m depth by sediment trap consumed the oxygen in the range of $0.48{sim}0.69;mg;O_2;l^{-1};day^{-1}$, while aggregates collected from 20 m depth, 0.88 to $1.04;mg;O_2;l^{-1};day^{-1}$. With these results, the HMW appeared not to be degraded in the water column, instead they seemed to be concentrated and affected the sediment oxygen demand.
 
Ű¿öµå
Lake Paldang;Degradation;Organic materials;Oxygen consuming;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.4, 2000³â, pp.374-379
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317176443)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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