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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.40, no.1, 2007³â, pp.14-30
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¿ì¸®³ª¶ó ´ëÇü ÀΰøÈ£¿¡¼ ¿µ¾ç»óÅ Æò°¡ ¹× ¼öÁú º¯¼ö¸¦ ÀÌ¿ëÇÑ °æÇèÀû ¸ðµ¨ ±¸Ãà
( Trophic State Index (TSI) and Empirical Models, Based on Water Quality Parameters, in Korean Reservoirs ) |
| ¹ÚÈñÁ¤;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;
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| º» ¿¬±¸ÀÇ ¸ñÀûÀº ºÎ¿µ¾çȵµ Áö¼ö(TSI)¸¦ ÀÌ¿ëÇÏ¿© ¿ì¸®³ª¶ó È£¼ÒÀÇ ¿µ¾ç »óŸ¦ Æò°¡Çϰí, °æÇèÀû ¸ðµ¨(Empirical model)¿¡ ÀÇÇÑ È£¼ÒÀÇ »óŸ¦ ¿¹ÃøÇϱâ À§ÇÑ °ÍÀÌ´Ù. ¿¬±¸¿¡ »ç¿ëµÈ ¼öÁú ÀÚ·á(2000, 2001)´Â ȯ°æºÎ DB½Ã½ºÅÛ¿¡¼ ȹµæÇÏ¿´À¸¸ç ÀÌ¿ëµÈ º¯¼ö´Â ¿ëÁ¸»ê¼Ò(DO), »ý¹°ÇÐÀû »ê¼Ò ¿ä±¸·®(BOD), ÈÇÐÀû »ê¼Ò ¿ä±¸·®(COD), ÃÑÀÎ (TP), ÃÑÁú¼Ò (TN), ºÎÀ¯¹°Áú (SS), Åõ¸íµµ(SD), ¿±·Ï¼Ò-${alpha}$ (CHL), Àü±âÀüµµµµ (Cond.)¿´´Ù. ÀÌ·± ¼öÁú º¯¼öÀÇ ³óµµ´Â ÃøÁ¤µÈ ¼ö°è ¹× °èÀý¿¡ µû¶ó º¯À̾ç»óÀ» º¸¿´´Ù. ÀϹÝÀûÀ¸·Î, ¿µ¾ç»óÅÂ(Trophic state)´Â »ó·ù·ÎºÎÅÍ ´ïÀ¸·Î °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´À¸¸ç, °èÀýÀû º¯ÀÌ´Â ¿©¸§ À帶±â (7${sim}$8¿ù)µ¿¾È Å©°Ô ¹ß»ýÇß´Ù. TPÀÇ ÁÖµÈ À¯ÀÔÀº À帶±â (r=0.656, p=0.002)µ¿¾È ÀϾ°í, ÀÌ·± Çö»óÀº SS(r=0.678, p<0.001)¿Í À¯»çÇÑ °æÇâÀ» º¸¿´´Ù. CHL, TP, SD ¹× TNÀ» Æ÷ÇÔÇÑ ¼öÁúº¯¼ö´Â °èÀý¿¡ µû¸¥ ¼ö°è³»ÀÇ ¿µ¾ç»óŸ¦ Æò°¡ÇÏ´Â ¹æ¹ý¿¡ Àû¿ëµÇ¾ú´Ù. Carlson(1977)ÀÇ ºÎ¿µ¾çȵµÁö¼ö(TSI)¿¡ ±âÃÊÇÑ ¼ö°è ³» TSI(CHL), TSI(TP)¹× TSI(SD)´Â Áß¿µ¾ç-ºÎ¿µ¾ç »óŸ¦ º¸¿´´Ù. ÇÑÆí, TSI(TN)Àº °èÀý¿¡ °ü°è¾øÀÌ Àüü È£¼Ò ³»¿¡¼ TN³óµµ°¡ dzºÎÇÑ ºÎ¿µ¾ç-°ú¿µ¾ç »óŸ¦ º¸¿´´Ù. µû¶ó¼, ÀÎÀº È£¼Ò ³» ¿µ¾ç »óŸ¦ Á¶ÀýÇÏ´Â ÁÖ¿äÀÎÀÚ°¡ µÈ´Ù. CHL¿Í ´Ù¸¥ ¼öÁú º¯¼ö(TP, TN,±×¸®°í SD)»çÀÌÀÇ °ü°è¸¦ ºÐ¼®Çϱâ À§ÇÑ °æÇèÀû ¸ðµ¨(Empirical model)ÀÌ °³¹ßµÇ¾ú´Ù. ·Î±×-Àüȯ ȸ±ÍºÐ¼®¿¡¼ CHL-TP´Â À帶 Àü±â $R^2$ °ªÀÌ 031(p=0.017)À̾úÀ¸³ª À帶 Èı⿡´Â 0.69(p<0.017)·Î À帶 Èıâ ÀÎÀÌ Á¶·ù ¼ºÀå¿¡ Å« ¿µÇâÀ» ¹ÌÄ¡´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÌ¿Í ´ëÁ¶ÀûÀ¸·Î, SD´Â TP, CHLÁõ°¡¿¡ ´ëÇØ °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´°í TNÀº ¸ðµç ±â°£ µ¿¾È CHL¿Í ¾àÇÑ °ü°è¸¦ °¡Á³´Ù. °á°úÀûÀ¸·Î, °æÇèÀû ¸ðµ¨(Empirical model)ÀÌ Á¦½ÃÇϵíÀÌ TP´Â CHLÀ» ¿¹ÃøÇÏ´Â ÇÙ½É ÀÎÀÚ·Î »ç·áµÇ¾ú´Ù. |
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| The purpose of this study was to evaluate trophic conditions of various Korean reservoirs using Trophic State Index (TSI) and predict the reservoir conditions by empirical models. The water quality dataset (2000, 2001) used here were obtained from the Ministry of Environment, Korea. The water quality, based on multi-parameters of dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), total phosphorus (TP), total nitrogen (TN), suspended solid (SS), Secchi depth (SD), chlorophyll-${alpha}$ (CHL), and conductivity largely varied depending on the sampling watersheds and seasons. In general, trophic conditions declined along the longitudinal axis of headwater-to-the dam and the largest seasonal variations occurred during the summer monsoon of July-August. Major inputs of TP occurred during the monsoon (r=0.656, p=0.002) and this pattern was similar to solid dynamics of SS (r=0.678, p<0.001). Trophic parameters including CHL, TP, SD, and TN were employed to evaluate how the water systems varies with season. Trophic State Index (TSI, Carlson, 1977), based on TSI (CHL), TSI (TP), and TSI (SD), ranged from mesotrophic to eutrophic. However, the trophic state, based on TSI (TN), indicated eutrophic-hypereutrophic conditions in the entire reservoirs, regardless of the seasons, indicating a N-rich system. Overall, nutrient data showed that phosphorus was a primary factor regulating the trophic state. The relationships between CHL (eutrophication index) vs. trophic parameters (TN, TP, and SD) were analysed to develop empirical models which can predict the trophic status. Regression analyses of log-transformed seasonal CHL against TP showed that the value of $R^2$ was 0.31 (p=0.017) in the premonsoon but was 0.69 (p<0.001) during the postmonsoon, indicating a greater algal response to the phosphorus during the postmonsoon. In contrast, SD had reverse relation with TP, CHL during all season. TN had weak relations with CHL during all seasons. Overall, data suggest that TP seems to be a good predictor for algal biomass, estimated by CHL, as shown in the empirical models. |
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| Ű¿öµå |
| eutrophication;reservoir;monsoon;empirical model;trophic state index; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.40, no.1, 2007³â, pp.14-30
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200709905948690)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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