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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.32, no.2, 1999³â, pp.111-111
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±¹³» ÁÖ¿äÈ£¼öÀÇ À°¼öÇÐÀû Á¶»ç(3) : Áø¾çÈ£
( The Limnological Survey of Major Lakes in Korea (3): Lake Jinyang ) |
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| 1993³â 6¿ùºÎÅÍ 1994³â 5¿ù±îÁö Áø¾çÈ£¿¡ ´ëÇÑ À°¼öÇÐÀû Á¶»ç°¡ ¿ù°£ Á¶»ç·Î ½Ç½ÃµÇ¾ú´Ù. Ç¥ÃþÀÇ Åõ¸íµµ, ¿±·Ï¼Ò a, ÃÑÁú¼Ò, ÃÑÀÎ³óµµ ¹× ÀÏÂ÷»ý»ê·ÂÀº Á¶»ç±â°£ °¢°¢ $0.8{sim}3.5;m,;0.9{sim}13.6;mgChl/m^3,;0.78{sim}2.32;mgN/{ell},;11{sim}56;mgP/m^3,;270{sim}2,160;mgC;m^{-2}day^{-1}$·Î À̵éÀÇ ÇÏ°è Æò±Õ³óµµ·Î »êÁ¤ÇÑ Áø¾çÈ£ÀÇ ¿µ¾ç»óÅ´ ºÎ¿µ¾çÈ£¿¡ ÇØ´çµÈ´Ù. Áø¾çÈ£ÀÇ Åõ¸íµµ¿¡´Â ¿±·Ï¼Ò a º¸´Ù ºÎÀ¯¹°Áú(SS)·Î ³ªÅ¸³ª ¹«±â¼ººÎÀ¯¹°Áú(NVSS)ÀÌ Åõ¸íµµ¿¡ Å©°Ô ¿µÇâÀ» ¹ÌÄ¡´Â °ÍÀ¸·Î º¸ÀδÙ. ÃÑÀÎ ³óµµ´Â Çϰ迡 ³ô°Ô ³ªÅ¸³µ°í Áú¼Ò³óµµº¸´Ù »ó´ëÀûÀ¸·Î Å« °èÀýº¯µ¿À» º¸¿´´Ù. ¿¬°£ TN/TP ¿øÀÚºñ´Â $61{sim}334$À¸·Î ±¹³» ´ëÇüÀΰøÈ£ Áß ´ëü·Î ³·Àº ¼öÁØ¿¡ ÇØ´çµÈ´Ù. ½Ä¹°Çöûũſ±ºÁýÀº Çϰ迡´Â ³²Á¶·ùÀÎ Microcystis ichthyoblabe, M. aeruginosa°ú ³ìÁ¶·ùÀÎ Chlorella sp.¿Í Cosmarium sp.°¡ ¿ìÁ¡ÇÏ¿´À¸¸ç Ãß°è¿Í µ¿°è¿¡´Â ±ÔÁ¶·ùÀÎ A. granulata, A. granulata var. angustissima A. distans°¡ ¿ìÁ¡ÇÏ¿´´Ù. µ¿¹°ÇöûũſÀº ¿ä°¢·ù À¯»ýÀÌ ¿¬Áß ¿ìÁ¡ÇÏ¿´°í 8¿ù°ú 10¿ù¿¡´Â ¿ä°¢·ù À¯»ý À̿ܿ¡ Áö°¢·ùÀÎ Bosminopsis deitersi, Bosmina longirostris°¡ °¢°¢ ¿ìÁ¡ÇÏ¿´´Ù. Á¶»ç±â°£ Áø¾çÈ£ ÅðÀû¹°ÀÇ Á¶»çÁ¤Á¡º° À¯±âź¼Ò ¹× ÀÎ, Áú¼ÒÀÇ Æò±Õ ÇÔ·®Àº °¢°¢ $0.4{sim}9.4;mgC/g,;0.14{sim}0.62;mgP/g,;0.59{sim}l.23;mgN/g$À¸·Î µ¿±â°£ Á¶»çµÈ ü·ù½Ã°¢ÀÌ ±ä È£¼öµéº¸´Ù Å©°Ô ³·¾Ò´Ù. Áø¾çÈ£ÀÇ ¿¬°£ Æò±Õ C/Nºñ´Â $2.6{sim}9.2$·Î oligohumicÇÑ »óÅÂÀÌ´Ù. Áø¾çÈ£ÀÇ ¿¬°£ ¼ö¸éÀû´ç ÀκÎÇÏ·®Àº $6.4;gPm^{-2}yr^{-1}$·Î ºÎ¿µ¾çÈ ÀÓ°èºÎÇÏ·® ($4.1gPm^{-1};yr^{-1}$)À» ÃʰúÇϰí ÀÖ´Ù. Áø¾çÈ£ÀÇ À¯¿ªÀ¸·ÎºÎÅÍÀÇ À¯±â¹° À¯ÀÔ·®Àº 3,429 tonC/yrÀÌ¸ç ½Ä¹°ÇöûũſÀÇ ÀÏÂ÷»ý»ê¿¡ ÀÇÇÑ ÀÚü»ý¼ºÀ¯±â¹°·®Àº 4,632 tonC/yrÀ¸·Î Àüü À¯±â¹°ºÎÇÏ·®Áß ÀÚü»ý¼º À¯±â¹° ºñÀ²ÀÌ ³ô¾ÒÀ¸³ª ¿ÜºÎ À¯¿ªÀÇ À¯±â¹° ºÎÇÏ·®µµ Å©°Ô ³ªÅ¸³µ´Ù. Áø¾çÈ£¿Í °°ÀÌ Ã¼·ù½Ã°£ÀÌ ÂªÀº È£¼ö´Â ü·ù½Ã°£ÀÌ ±ä È£¼öµé¿¡ ºñÇØ ÀÚü»ý¼ºÀ¯±â¹°ÀÇ ºñÁßÀÌ ³·±â ¶§¹®¿¡ À¯¿ª¿¡¼ ¹ß»ýµÇ´Â À¯±â¹°ÀÇ Ã³¸®È¿À²À» ³ôÀÏ °æ¿ì ¼öÁú °³¼±È¿°ú°¡ Å©°Ô ³ªÅ¸³¯ °ÍÀ¸·Î º¸ÀÌ¸ç ¾Æ¿ï·¯ ºÎ¿µ¾çÈ ¿øÀι°ÁúÀÎ ÀÎ, Áú¼Ò´Â ºñÁ¡¿À¿°¿ø¿¡ ´ëÇÑ °ü¸®¿¡ ÃÊÁ¡À» ¸ÂÃç ¾ß ÇÒ °ÍÀ¸·Î º¸ÀδÙ. |
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| The limnological survey of Lake Jinyang was conducted from June 1993 to May 1994 on the monthly basis. Secchi disc transparency, epilimnetic chlorophyll a (chl-a), total nitrogen (TN), total phosphorus (TP) concentration and primary productivity were in the range of $0.8{sim}3.5;m,;0.9{sim}13.6;mgChl/m^3,;0.78{sim}2.32;mgN/{ell},;11{sim}56;mgP/m^3,;270{sim}2,160;mgC;m^{-2};day^{-1}$, respectively. On the basis of TP, chl-a and Secchi disc depth, the trophic state of Lake Jinyang was eutrophic. Water clarity was more strongly related to total suspended solids (TSS, $R^2=0.65$) than algal chl-a ($R^2=0.36$), implying that non volatile suspended solids (NVSS) strongly influenced transparency. TP increased in warm seasons and exhibited a greater relative degree of variability than TN. TN/TP atomic ratio varied from 61 to 334. The dominant species of phytoplankton were Aulacoseira granulata, A. granulata var. angustissima, A. distans, Microcystis sp. Chlorella sp. and Cosmarium sp. The dominant zooplankton species were Bosminopsis deitersi and Bosmina longirostris. The organic carbon, nitrogen and phosphorus content of lake sediment were $0.4{sim}9.4;mgC/g,;0.14{sim}0.62;mgN/g,;0.59{sim}1.23;mgP/g$, respectively. TP loading from the watershed and fishfarm were estimated to be $6.4;gP;m^{-2};yr^{-1}$, which far exceeded the critical loading ($4.1;gP;m^{-2};yr^{-1}$) for eutrophication. The allochthonous organic carbon loading from the watershed and autochthonous organic carbon loading by primary production of phyto-plankkton were determined to be 3,429 tC/yr, 4,632 tC/yr, respectively. These results emphasize the need for control of allochthonous organic carbon as well as phosphorus input, which trigger algal growth, to improve water quality of Lake Jinyang. |
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| Lake Jinyang;Limnological survey;Trophic state;Plankton; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.32, no.2, 1999³â, pp.111-111
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199910102424377)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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