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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.1, 2000³â, pp.51-60
±Ý°­ Áß ${cdot}$ ÇÏ·ùÀÇ ¿À¿° ¾ç»ó°ú ¼öÁúÆò°¡
( The Trend and Assessment of Water Pollution from Midstream to Downstream of the Kum River )
ÀÓâ¼ö;Á¶°æÁ¦;½ÅÀç±â; û¿î´ëÇб³ Åä¸ñȯ°æ°øÇаú;ÀÎÁ¦´ëÇб³ ȯ°æ½Ã½ºÅÛÇкÎ;Çѱ¹¼öÀÚ¿ø°ø»ç ¼öÀÚ¿ø¿¬±¸¼Ò;
 
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±Ý°­ Áß${cdot}$ÇÏ·ùÀÇ º»·ù¿Í Áö·ù¿¡¼­ ¼öÁú¿À¿°ÀÇ Æ¯¼º°ú º¯µ¿¾ç»óÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© 1998³â 3¿ùºÎÅÍ 1999³â 6¿ù±îÁö ÃÑ 8ȸ Á¶»çÇÏ¿´´Ù. ȯ°æ¿äÀÎ Áß Áú¼Ò, ÀÎ ¹× chl-aÀÇ º¯µ¿ÀÌ ´Ù¸¥ ¿äÀο¡ ºñÇØ Áõ°¨¾ç»óÀÌ ¶Ñ·ÇÇÏ¿´°í ƯÈ÷ ¹«±â N${cdot}$PÀÇ ¿µÇâÀº Áö·ù Áß °©Ãµ, ¹Ìȣõ ¹× ¼®¼ºÃµÀÌ °¡Àå Å« °ÍÀ¸·Î °üÂûµÇ¾ú´Ù. ¼öÁúÀº ¼ö¹®¿äÀΰúµµ °ü·Ã¼ºÀÌ ³ô¾Æ Æò¼ö·®ÀÌÇÏÀÇ À¯·®ÀÌ Àå±âÈ­µÇ°Å³ª ºñ±³Àû À¯·®ÀÌ ÀûÀº Àú¼ö±â${sim}$°¥¼ö±â¿¡ ±Þ°ÝÇÏ°Ô ¾ÇÈ­µÇ¾ú°í °èÀýÀûÀ¸·Î 12¿ù${sim}$3¿ù¿¡ ÇöÀúÇÏ¿´´Ù. Áß${cdot}$ÇÏ·ù¿¡¼­ $NH_{4}$¿Í SRP´Â ÇÏ·ù·Î À¯ÇÏÇϸ鼭 ±Þ°ÝÇÏ°Ô °¨¼Ò(1,476${ o}$577 ${mu}g$ N/l, 117${ o}$11 ${mu}g$ P/l)ÇÏ¿´°í chl-a´Â Áö¼öÀûÀ¸·Î Áõ°¡(9.0${ o}$64.4 ${mu}g/l$ÇÏ´Â °æÇâÀÌ ¶Ñ·ÇÇÏ¿´´Ù. ¹Ý¸é¿¡ $NO_{3}$¿Í $BOD_{5}$´Â Á¤Á¡°£¿¡ Å« Â÷À̰¡ ¾ø¾ú°í ÀÏÁ¤ÇÏ¿´´Ù. ½Ä¹°ÇöûũſÀÇ »ýÀå¿¡ ´ëÇÑ Á¦ÇÑ¿µ¾ç¿°Àº N${cdot}$P ³óµµÀÇ º¯È­ »Ó¸¸ ¾Æ´Ï¶ó TN/TP ¶Ç´Â DIN/SRPºñ°¡ º»·ù¿¡¼­ °¢°¢ 42¿Í 544·Î¼­ ºñ±³Àû ³ô¾Æ Nº¸´Ù´Â P°¡ Á¦ÇÑÀÎÀÚ·Î º¼ ¼ö ÀÖ¾ú´Ù. À¯±â¹°ÀÇ °£Á¢ÀûÀÎ ÁöÇ¥ÀÎ $BOD_{5}$ Æò°¡¿¡¼­ º»·ù ¹× Áö·ù°¡ III±Þ¼ö·Î ÆÇÁ¤µÇ¾úÀ¸³ª ƯÈ÷ °©ÃµÀÇ °æ¿ì´Â V±Þ¼ö ÀÌ»óÀ̾ú´Ù. ±× ¿Ü chl-a, Åõ¸íµµ, TN ¹× TP·Î¼­ ¼öÁúÀ» Æò°¡ÇÑ °á°ú Àü¹ÝÀûÀ¸·Î ºÎ¿µ¾ç ¼öÁØÀ» ÃʰúÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ±Ý°­ Áß Áß${cdot}$ÇÏ·ù¿¡¼­ ¼öÁú¿À¿°ÀÇ Àü°³¾ç»óÀº °©Ãµ°ú ¹ÌȣõÀ» Æ÷ÇÔÇÑ Áö·ù·ÎºÎÅÍ ³ôÀº N${cdot}$P ¿µ¾ç¿°ÀÇ À¯ÀÔ ¿µÇâÀÌ ÁÖµÈ ¿äÀÎÀ¸·Î º¼ ¼ö ÀÖ¾ú°í ¹Ý¸é¿¡ ÇÏ·ù¿¡´Â ¸¸¼ºÀûÀÎ ½Ä¹°ÇöûũſÀÇ ¹ø¹«°¡ °üÂûµÇ¾î ÀÌ¿¡ ´ëÇÑ ÁÖ¿ä ¿À¿°¿øÀÇ ¼öÁú°ü¸®°¡ ½Ã±ÞÇÏ¿´´Ù.
In order to understand the trend and assessment of water pollution, seasonal water quality was determined in the main river and the tributaries from midstream to downstream of the Kum River from March 1998 to June 1999. Among environmental factors, the variation of nitrogen, phosphorus and chlorophyll-a was distinctive on an aspect of increase and decrease relatively to others, and particularly the impact of inorganic N ${cdot}$ P inflowing into the main river was observed to be more significant at the Kapchon, Mihochon and Soksongchon among the tributaries. Water quality was highly related to hydrologic factor, and it was more deteriorated when water discharge maintains for a long time below normal flow or relatively at low condition of minimum and drought flow. These phenomena were remarkablee from December to March of the next year. $NH_4$ and SRP were decreased dramatically flowing toward the lower part of the river and chl-a was increased exponentially. While, the variations of $NO_3$ and $BOD_5$ were regular from midstream to downstream and there was no significant difference between the stations. Limiting nutrient for Phytoplankton growth seemed to be P than N because the ratio of TN/TP or DIN/SRP was relatively high as 42 or 544 in the main river, respectively. The main river and tributaries were ranked to be third grade, based on the assessment of BOD as an indirect indicator of organics, but particularly Kapchon was ranked to be over fifth grade. In addition, the inflow of high N ${cdot}$ P nutrients from tributaries including Kapchon and Mihochon seemed to be major factor of the development of water pollution of the Kum River. On the other hand, persistent bloom of phytoplankton in lower part of the river was observed. As a conclusion, management of water quality for main source of pollution is urgent.
 
Ű¿öµå
hlorophyll-a;Discharge;Eutrophication;Kum River;Nitrogen;Phosphorus;Water quality assessment;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.1, 2000³â, pp.51-60
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317175195)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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