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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.42, no.3, 2009³â, pp.382-393
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( Trophic State Characteristics in Topjeong Reservoir and Their Relations among Major Quality Parameters ) |
| ¹ÚÀ¯¹Ì;ÀÌÀÇÇà;ÀÌ»óÀç;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¸í½Ã½ºÅÛ°úÇдëÇÐ;Çѱ¹³ó¾îÃ̰ø»ç ³ó¾îÃÌ¿¬±¸¿ø;Ãæ³²´ëÇб³ »ý¸í½Ã½ºÅÛ°úÇдëÇÐ;Ãæ³²´ëÇб³ »ý¸í½Ã½ºÅÛ°úÇдëÇÐ;
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| º» ¿¬±¸ÀÇ ¸ñÀûÀº žÁ¤Àú¼öÁöÀÇ ºÎ¿µ¾çÈ Æ¯¼ºÀ» ¾Ë°í, Áֿ亯¼ö°£ÀÇ »óÈ£°ü°è¸¦ °áÁ¤ÇÏ´Â °ÍÀÌ´Ù. ¿¬±¸¸¦ À§ÇÏ¿© 1995³âºÎÅÍ 2007³â±îÁöÀÇ È¯°æºÎÀÇ ¼öÁú ÃøÁ¤ ÀڷḦ ÀÌ¿ëÇÏ¿© ´Ù¾çÇÑ º¯¼ö¸¦ ºÐ¼®ÇÏ¿´´Ù. ÀÌ·¯ÇÑ ¼öÁú º¯¼ö´Â ¿¬º°, °èÀýº°·Î º¯À̾ç»óÀ» º¸¿´´Ù. žÁ¤Àú¼öÁöÀÇ TN°ú TPÀÇ ¿¬Æò±Õ °ªÀº °¢°¢ 1.78 mg $L^{-1}$, 0.03 mg $L^{-1}$·Î, TN:TPÀÇ ºñÀ²Àº 76À¸·Î ³ªÅ¸³ª žÁ¤Àú¼öÁö ³»ÀÇ Áú¼Ò´Â ¿¬Áß ºÎ¿µ¾çȸ¦ ÃʰúÇÑ »óÅÂÀ̸ç ÀÎÀº È£¼ÒÀÇ 1Â÷ »ý»ê·Â¿¡ ´ëÇÑ Á¦ÇÑ ¿äÀÎÀ¸·Î ÀÛ¿ëÇÒ ÀáÀ缺À» °®´Â °ÍÀ» ¾Ë ¼ö ÀÖ´Ù. TP´Â 8¿ù¿¡ °¼ö¿¡ ÀÇÇÑ Èñ¼® Çö»óÀ» º¸À̸ç, SSÀÇ ¿ùº° º¯È´Â CHL°ú °°Àº ¾ç»óÀ» º¸¿´´Ù. BOD¿Í CODÀÇ ¿¬Æò±Õ °ªÀº °¢°¢ 1.61 mg $L^{-1}$, 4.23 mg $L^{-1}$·Î ³ªÅ¸³µÀ¸¸ç ¿¬º° º¯È ¾ç»óÀº °¼ö·®°ú °ü·ÃµÇ¾úÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ Å¾Á¤Àú¼öÁö ³»ÀÇ µÎ »çÀÌÆ®´Â °ø°£ÀûÀÎ º¯ÀÌÀÇ Æ¯¼ºÀ» °ÅÀÇ º¸ÀÌÁö ¾ÊÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. žÁ¤Àú¼öÁö ³»ÀÇ 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 TN ³óµµ°¡ dzºÎÇÑ ºÎ¿µ¾ç-°ú¿µ¾ç »óŸ¦ º¸¿´´Ù. CHL¿Í ´Ù¸¥ ¼öÁú º¯¼ö(TP, TN, ±×¸®°í SD)»çÀÌÀÇ °ü°è¸¦ ·Î±×-Àüȯ ȸ±ÍºÐ¼®À» ÅëÇØ ºÐ¼®ÇÏ¿´´Ù. TP¿¡ ´ëÇÑ CHLÀÇ °èÀýº° ȸ±ÍºÐ¼®¿¡ µû¸£¸é CHLÀÇ º¯ÀÌ´Â TPÀÇ º¯ÀÌ¿¡ ÀÇÇØ 37% ($R^2$=0.37, p<0.001, r=0.616)¸¦ ¼³¸íÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸³ª TNÀº ³·Àº »ó°ü°ü°è ($R^2$=0.03, p>0.05)¸¦ º¸¿´´Ù. ¶ÇÇÑ SD¿¡ ´ëÇÑ CHLÀÇ È¸±â ºÐ¼®¿¡¼´Â CHLÀÌ SDÀÇ º¯ÀÌ¿¡ ÀÇÇØ 33% ($R^2$=0.33, p<0.003, r=0.580)¸¦ ¼³¸íÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³ª žÁ¤Àú¼öÁöÀÇ SD´Â CHL¿¡ ÀÇÇÏ¿© Á¶ÀýµÊÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. °á°úÀûÀ¸·Î TP´Â žÁ¤Àú¼öÁöÀÇ ºÎ¿µ¾çÈ Çö»óÀ» ¿¹ÃøÇÏ´Â ÇÙ½É ÀÎÀÚ·Î »ç·áµÇ¹Ç·Î ºÎ¿µ¾ç»óŸ¦ Á¶ÀýÇϱâ À§ÇØ ¼ö°è·ÎºÎÅÍ ÀÎÀÇ À¯ÀÔÀÇ Ã¶ÀúÇÑ °ü¸®°¡ ¸Å¿ì Áß¿äÇÏ´Ù°í ÆÇ´ÜµÇ¾ú´Ù. |
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| The objectives of this study were to characterize long-term annual and seasonal trophic state of Topjeong Reservoir using conventional variables of Trophic State Index (TSI) and to determine the empirical relations between the trophic parameters. For the analysis, we used water quality dataset of 1995$sim$2007, which is obtained from the Ministry of Environment, Korea and the number of parameters was 9. Annual ambient mean values of TN and TP were 1.78 mg $L^{-1}$ and 0.03 mg $L^{-1}$, respectively and TN : TP ratios averaged 76, indicating that this system was nitrogen-rich hypertrophic, and was probably phosphorus-limitation for algal growth. Therefore, nitrogen varied little with seasons and years, and total phosphorus (TP) varied depending on season and year. Monsoon dilutions of TP occurred in August and monthly fluctuations of suspended solid (SS) was similar to those of chlorophyll-$alpha$ (CHL). Annual mean values of BOD and $COD_{Mn}$ were 1.61 mg $L^{-1}$ and 4.23 mg $L^{-1}$, respectively and the interannual values were directly influenced by the intensity of annual rainfall. There were no significant differences in the trophic variables between the two sampling sites. Mean values of Trophic State Index (TSI, Carlson, 1977), based on TN, TP, CHL, and SD (Secchi depth), turned out as eutrophic state, except for the TN (hypertrophic). Regression analyses of log-transformed seasonal CHL against TP and TN showed that variation of the CHL was explained 37% by the variation of TP ($R^2$=0.37, p<0.001, r=0.616), but not by TN ($R^2$=0.03, p>0.05). Regression coefficient of $Log_{10}$CHL vs $Log_{10}SD$ was 0.330 (p<0.003, r=0.580), indicating that transparency is regulated by the organic matter in the system. Results, data suggest that one of the ways controlling the eutrophication would be a reduction of phosphorus from the watershed. |
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| Ű¿öµå |
| Eutrophication;nutrient;reservoir;empirical model;trophic state; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.42, no.3, 2009³â, pp.382-393
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200934939597504)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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