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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.38, no.4, 2005³â, pp.461-474
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µ¿ÇØ¾È ¼®È£ÀÇ À°¼öÇÐÀû Á¶»ç (4); ¼ÛÁöÈ£
( The Limnological Survey of a Coastal Lagoon in Korea (4); Lake Songji ) |
| ±Ç»ó¿ë;Çã¿ì¸í;ÀÌ»óÇÏ;±èµ¿Áø;±è¹üö; °¿ø´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æ°úÇаú;»ïô´ëÇб³ ȯ°æ°øÇаú;»ïô´ëÇб³ ȯ°æ°øÇаú;±¹¸³È¯°æ°úÇпø;°¿ø´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æ°úÇаú;
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| ¼ÛÁöÈ£ Ç¥ÃþÀÇ Æò±Õ ¼ö¿ÂÀº °Ü¿ï °áºù±â¸¦ Á¦¿ÜÇϰí´Â 7.4-$28.2^{circ}C$·Î ÃÖÀú $7.3^{circ}C$ ¹× ÃÖ°í $28.7^{circ}C$ÀÌ¿´´Ù. Ç¥ÃþÀÇ ¿°ºÐÀº 0.1-13.3%ÀÇ ¹üÀ§·Î ºÐÆ÷ÇÏ¿´À¸¸ç, ÁßÃþ ºÎ±Ù¿¡¼ ÈÇмºÃþÀÌ Çü¼ºµÇ¾ú´Ù. ÈÇмºÃþÀÌ °ÇÏ°Ô ³ªÅ¸³µ´ø 1999³â 11¿ù Ç¥ÃþÀÇ ¿ëÁ¸»ê¼Ò´Â 11.8-12.3 $mgO_2;{cdot};L^{-1}$À̾úÀ¸³ª, ½ÉÃþ¿¡¼´Â 0.7-1.9 $mgO_2;{cdot};L^{-1}$À¸·Î ¸Å¿ì ³·¾Ò´Ù. Ç¥ÃþÀÇ ÃÑÀΰú ¿ëÁ¸¹«±âÀÎÀÇ ³óµµ´Â °¢°¢ 0.005-0.396 $mgP;{cdot};L^{-1}$ ¹× 0.000-0.319 $mgP;{cdot};L^{-1}$ÀÇ ¹üÀ§ÀÌ¿´À¸¸ç, ºÏÈ£¿Í ³²È£ÀÇ ´ëÇ¥ Á¤Á¡À¸·Î º¼ ¼öÀÖ´Â Á¤Á¡ 2¿Í 3¿¡¼ÀÇ Æò±Õ³óµµ´Â °¢°¢ 0.061 ¹× 0.045 $mgP;{cdot};L^{-1}$·Î ºÏÈ£ÂÊÀÇ ³óµµ°¡ ´õ ³ô¾Ò´Ù. Ç¥ÃþÀÇ ÃÑÁú¼Ò(TN)´Â 0.223-3.521 $mgN;{cdot};L^{-1}$·Î ºÐÆ÷ÇÏ¿´À¸¸ç, ºÏÈ£¿Í ³²È£ÀÇ Æò±Õ³óµµ´Â °¢°¢ 0.883 ¹× 0.794 $mgN;{cdot};L^{-1}$·Î ÃÑÀΰú ¸¶Âù°¡Áö·Î ºÏÈ£ÂÊ¿¡¼ ³ô¾Ò´Ù. Áú»ê¼ºÁú¼Ò ($NO_3-N$) ¹× ¾Ï¸ð´Ï¾Æ¼ºÁú¼Ò ($NH_3-N$)ÀÇ ³óµµ´Â °¢°¢ 0.000-1.000 $mgN;{cdot};L^{-1}$ ¹× 0.000-0.804 $mgN;{cdot};L^{-1}$ÀÌ¿´´Ù. ±Ô¼Ò³óµµ´Â 0.0-6.2 $mgSi;{cdot};L^{-1}$ÀÇ ¹üÀ§·Î 3-5¿ù¿¡ ¸Å¿ì ³·¾ÒÀ¸¸ç, °èÀýÀûÀÎ º¯È°¡ ¶Ñ·ÇÈ÷ ³ªÅ¸³µ´Ù. ÀúÁúÀÇ ÀÔÀÚ´Â 0-125ÀÎ silt¹× coarse silt·Î ÀÌ·ç¾îÁ® ÀÖÀ¸¸ç, COD´Â 51.4-116.9 $mgO_2;{cdot};gdw^{-1}$·Î Æò±Õ 93.0 $mgO_2;{cdot};gdw^{-1}$ ÀÌ¿´´Ù. ÀúÁú³»ÀÇ TP¹× TNÀÇ ³óµµ´Â °¢°¢ 0.04-1.46 $mgP;{cdot};gdw^{-1}$ ¹× 0.12-1.03 $mgN;{cdot};gdw^{-1}$À̾ú´Ù. Ç¥ÃþÀÇ ¿±·Ï¼Ò aÀÇ Á¤Á¡º° Æò±Õ°ªÀº Á¤Á¡ 1, 2 ¹× 3¿¡¼ °¢°¢ 15.6, 15.2 ¹× 16.0 $mg;{cdot};m^{-3}$À¸·Î À¯»çÇÏ¿´´Ù. ½Ä¹°ÇöûũſÀº ÃÑ 49Á¾ÀÌ ÃâÇöÇÏ¿´À¸¸ç, »ý¹°·®Àº 50-23, 350 cells ${cdot};mL^{-1}$·Î 2001³â 9¿ù¿¡ °¡Àå ¸¹¾Ò´Ù. ÀÌ ½Ã±âÀÇ ¿ìÁ¡Á¾Àº ³ìÁ¶·ùÀÎ Schroederia judayiÀÌ¿´À¸¸ç, »ý¹°·®Àº 20,417 cells ${cdot};mL^{-1}$ÀÌ¿´´Ù. ¼ÛÁöÈ£ÀÇ ¼öÁúÀ» °³¼±Çϱâ À§Çؼ´Â ÀÎÀ§ÀûÀ¸·Î ÈÇмºÃþÀ» ÆÄ±«½ÃÄÑ ½ÉÃæ¿¡ ¿ëÁ¸»ê¼Ò¸¦ °ø±Þ½ÃÄÑ¾ß ÇÒ °ÍÀ¸·Î ÆÇ´ÜµÇ¸ç, ¸ð·¡ÅéÀ¸·Î ÀÎÇØ ¸·ÇôÁ® ÀÖ´Â ÇØ¼ö±³È¯À» Ç×»ó ¿øÇÒ ÇÏ°Ô À¯ÁöµÉ ¼ö ÀÖµµ·Ï ÇÏ´Â °ÍÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| Physicochemical parameters, plankton community structure, and sediment were surveyed from 1988 to 2002, at two months interval, in a eutrophic coastal lagoon (Lake Songji, Korea). The lake basin is separated from the sea by a narrow sand dune, and a shallow sill divides the lake basin into two sub-basins. The stable stratifications and chemoclines are maintained all through the year at 1-2 m depth. DO was often very low (<1 $mgO_2;{cdot};L^{-1}$) in the monimolimnion. Secchi disc transparency was in the range of 0.5-2.7 m. TP, TN, and Chl. a concentration in the mixolimnion were 0.015-0.396 $mgP;{cdot};L^{-1}$), 0.223-3.521 $mgN;{cdot};L^{-1}$, and 0.5-129.8 mg ${cdot};m^{-3}$, respectively. TSI was in the eutrophic range of 54 to 62. Sediment was composed of silt and coarse silt. COD, TP, and TN content of the sediment were 51.4-116.9 $mgO_2;{cdot};gdw^{-1}$, 0.04-1.46 $mgP;{cdot};gdw^{-1}$ and, 0.12-1.03 $mgN;{cdot};gdw^{-1}$, respectively. The 49 phytoplankton species were identified. The maximum phytoplankton abundance obscured the lake in September 2001 (max. density: 23,350 cells ${cdot};mL^{-1}$. The Chlorophyte Schroederia judayi was dominant species in summer (max. density: 20,417 cells ${cdot};mL^{-1}$). The lake showed unique limnological features of a brackish lagoon in respect to biological community, chemical characteristics, and physical phenomena. |
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| Ű¿öµå |
| Lake Songji;brackish lagoon;trophic state;chemocline; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.38, no.4, 2005³â, pp.461-474
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200518317185593)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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