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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.2, 2004³â, pp.213-226
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( Analysis of Eutrophication Based on Chlorophyll-a, Depth and Limnological Characteristics in Korean Reservoirs ) |
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| º» ¿¬±¸¿¡¼´Â ¿±·Ï¼Ò a ³óµµ¿Í Àú¼öÁöÀÇ ¼ö½ÉÀ» Åä´ë·Î À¯ÇüÀ» ºÐ·ùÇÏ°í °¢ À¯Çü¿¡¼ÀÇ ¼öÁúƯ¼ºÀ» Æò°¡ÇÏ¿´´Ù. 486°³ÀÇ Àú¼öÁö¸¦ ´ë»óÀ¸·Î ¿±·Ï¼Ò a ³óµµ 25 ${mu}g;L^{-1}$¿Í ¼ö½É 7.5m¸¦ ±âÁØÀ¸·Î 4°¡Áö À¯ÇüÀ¸·Î ºÐ·ùÇÏ¿´´Ù. °¢ È£¼ö¿¡¼ÀÇ ¿¬Æò±Õ ÃÖ´ë ¿±·Ï¼Ò a ³óµµ¸¦ ±âÃÊ·Î OECD¿Í TSI ±âÁØ¿¡ µû¶ó Æò°¡ ½Ã °¢°¢ 34.3%¿Í 72.8%°¡ ºÎ¿µ¾ç»óÅ¿´´Ù. ¿±·Ï¼Ò a ³óµµ 25 ${mu}g;L^{-1}$¸¦ ±âÁØÀ¸·Î ±¸ºÐµÈ À¯Çüµé¿¡¼ ÃÑÁú¼Ò ³óµµ(2¹è) º¸´Ù´Â ÃÑÀÎ (4¹è)ÀÇ ³óµµÂ÷À̰¡ Å©°Ô ³ªÅ¸³µ´Ù. TN/TPºñ¸¦ Åä´ë·Î ÇÒ ¶§ ÀÎÀÌ Á¦ÇÑ ¿µ¾ç¿°À¸·Î ³ªÅ¸³µ°í, ¿µ¾ç»óŰ¡ ³ôÀº Àú¼öÁöµé¿¡¼ Àο¡ ´ëÇÑ Á¦ÇÑÁ¤µµ°¡ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¿±·Ï¼Ò a ³óµµ°¡ °¡Àå ³ôÀº TYPE II¿¡ Æ÷ÇÔµÈ Àú¼öÁö´Â »ó´ëÀûÀ¸·Î ³ëÈÄµÈ ½Ã¼³ÀÌ ¸¹°í DA/LAºñ°¡ ÀÛÀ¸¸ç ü·ù½Ã°£ÀÌ ±æ°í À¯¿ª ³» ³í°ú ¹çÀ¸·Î ÀÌ¿ëµÇ´Â ¸éÀûÀÌ ³Ð°í À¯¿ª¿¡¼ ¹ß»ýÇÏ´Â ¿À¿°ºÎÇϰ¡ ¸¹¾Ò´Ù. ºñ·Ï À¯¿ª¸éÀûÀÌ À¯¿ª³»¿¡¼ÀÇ ¿À¿°¹°Áú ¹ß»ýºÎÇÏ·®°ú °ü·ÃµÈ ¿äÀÎÀ¸·Î °í·ÁµÉ ¼ö ÀÖÀ¸³ª ¼öÁú°úÀÇ ¶Ñ·ÇÇÑ »ó°ü¼ºÀÌ ¾ø¾ú´Ù. º» ¿¬±¸¿¡¼ ¼ö½ÉÀ̳ª ½Ã¼³¹°ÀÇ ³ëÈÄÁ¤µµ¿Í °°Àº ÇüÅÂÇÐÀûÀΠƯ¼º°ú ´õºÒ¾î À¯¿ª ³»ÀÇ ÅäÁöÀÌ¿ëÇüÅ´ Àú¼öÁöÀÇ ¼öÁúÀ» °áÁ¤ÇÏ´Â ¸Å¿ì ÁÖ¿äÇÑ ÀÎÀÚ·Î ³ªÅ¸³µ°í ¼öÁú Ư¼ºÀ» Æò°¡ÇÔ¿¡ ÀÖ¾î È¿°úÀûÀÎ ÀÎÀÚ·Î Á¦½ÃµÇ¾ú´Ù. |
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| The present study was conducted to analyze the pattern of eutrophication of Korean reservoir with Chl. a concentration and morpho-physical parameters, and to valuate water quality characteristics of the classified types. The collected data from 486 reservoirs were classified as four types, with the Chl- a concentration (25 ${mu}g;L^{-1}$) and the ratio of water storage/surface area (mean depth, 7.5 m). According to OECD criteria and trophic state index based on Chl-a concentration, 34.3 and 72.8% of selected reservoirs appeared to be eutrophic, respectively. Characteristics of TYPE ll reservoirs generally showed high Chl-a concentration, relatively old age, small DA/LA ratio, short Hydraulic retention time, large paddy field and field to watershed ratio, and high pollutant loading compared to other types of reservoirs. The difference of TP concentration was greater than that of TN concentration in reservoir water among classified four types. Based on TN/TP ratio (by weight), phosphorus was limiting nutrient in all types and more closely related with Chl- a concentration than nitrogen. Significant decrease of Chl- a concentration with increase of TN/TP ratio observed only in reservoirs with Chl-a concentration > 25${mu}g;L^{-1}$. Although drainage area is believed to be a factor that is related to the generation load of pollutants in the watershed, it did not show any significant relationship with water quality parameters. Morphometric characteristics such as depth and age of reservoir as well as type of land use patterns in the watershed was among important parameters for the assessment of water quality characteristics in Korean reservoirs. |
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| Ű¿öµå |
| eutrophication;morpho-physical parameters;mean depth;DA/LA;land use;generation load of pollutants;water quality; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.2, 2004³â, pp.213-226
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317182845)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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