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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.36, no.3, 2003³â, pp.311-321
³«µ¿°­ ÇÏ·ù ¼ö°è¿¡¼­ ÀúÃþ¼ö ¹× ÀúÁúÅðÀûÃþÀÇ È¯°æ
( Environmental Conditions of Sediment and Bottom Waters near Sediment in the Downstream of the Nagdong River )
Á¤ÇÏ¿µ;Á¶°æÁ¦; ÀÎÁ¦´ëÇб³ ȯ°æ½Ã½ºÅÛÇкÎ;ÀÎÁ¦´ëÇб³ ȯ°æ½Ã½ºÅÛÇкÎ;
 
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³«µ¿°­ÀÇ ÇÏ·ùÁö¿ª (³«µ¿°­, ¼­³«µ¿°­ ¹× Á¶¸¸°­)ÀÇ ¼öÁú¿À¿°¿¡ À־ ÀúÁúÅðÀûÃþÀÇ ¿µÇâÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ÀúÁú°ú ÀúÃþ¼öÀÇ È¯°æÀ» Á¶»çÇÏ¿´´Ù. ¼¼ ÁöÁ¡¿¡¼­ ¼öÁúÀ» ¸ð´ÏÅ͸µ ÇÏ¿´À» ¶§, °í¼ö¿Â±âÀÎ 5 ${sim}$ 8¿ù¿¡ ¼öÇ¥¸é°ú ÀúÃþ°£ÀÇ ¼ö¿Â, ¿ëÁ¸ »ê¼Ò, $PO_4;^{3-}$, $NH_4;^+$ÀÇ Â÷À̰¡ ÄÇ´Ù. 7 ${sim}$ 8¿ù Áß¿¡ ÀúÃþÀÇ ¿ëÁ¸ »ê¼Ò´Â ´ëü·Î 5 mg $O_2/l$ ÀÌÇÏ·Î À¯ÁöµÇ´Â ºóµµ°¡ ³ô¾Ò°í, ÀÌ ±â°£¿¡ ÀúÁú-¼öÃþ °æ°è¸é¿¡¼­ $PO_4;^{3-}$¿Í $NH_4;^+$ÀÇ À̵¿ÀÌ È°¹ßÇÒ °ÍÀ¸·Î ÃßÁ¤µÈ´Ù. ÀúÁú¿¡ °¡±î¿î ÀúÃþ¿¡¼­ ¹«±â ¿µ¾ç¿° ³óµµ¿Í ¼öÃþchl-a ³óµµ´Â Áö¿ªÀûÀ¸·Î ³«µ¿°­<¼­³«µ¿°­<Á¶¸¸°­ÀÇ ¼øÀ̾ú°í ¼ö½ÉÀÌ ¾è°í ÀúÁú ÅðÀûÃþÀÌ ¹ß´ÞÇÒ¼ö·Ï ¼öÁú¿¡ ¹ÌÄ¡´Â ¿µÇâÀÌ ÄÇ´Ù. ÀúÁúÀÇ À¯±â¹° ÇÔ·®Àº ÇÏ·ù ÂÊÀ¸·Î °¥¼ö·Ï Áõ°¡ÇÏ¿´°í, ³«µ¿°­º¸´Ù´Â ¼­³«µ¿°­ ¼ö°è¿¡¼­ ´õ ³ô¾ÒÀ¸¸ç ÀúÁúÀÇ °¡ºñÁß°ú ¿ª »ó°ü°ü°è·Î¼­ ¿À¿°µµ »Ó ¾Æ´Ï¶ó ÀúÁúÀÔµµ¿Í °ü·ÃÀÌ ÀÖ¾ú´Ù. ÀúÁú °ø±Ø¼ö³» $PO_4;^{3-}$¿Í $NO_3;^-$Àº ¼öÃþº¸´Ù ±× ³óµµ°¡ ¸Å¿ì ³·¾ÒÀ¸³ª $NH_4;^+$¿Í $SiO_2$³óµµ´Â ¼öÃþ°ú À¯»çÇϰųª ´õ ³ô¾Ò´Ù. °ø±Ø¼ö ³» $NH_4;^+$¿Í $SiO_2$³óµµ´Â ÀúÁú ±íÀÌ¿¡ µû¶ó Áõ°¡ÇÏ¿´°í, $PO_4;^{3-}$´Â °¨¼ÒÇÑ ¹Ý¸é $NO_3;^-$Àº ÀÏÁ¤ÇÏ¿´´Ù. ¹Ý¸é ÀúÁú ³» ġȯ¼º ¹«±â¿µ¾ç¿°Àº °ø±Ø¼ö ¹«±â¿µ¾ç¿° ³óµµº¸´Ù ÃÖ´ë ¼ö¹é¹è ³ô¾ÒÀ¸¸ç $PO_4;^{3-}$, $NH_4;^+$, $SiO_2$´Â ÀúÁú ±íÀÌ¿¡ µû¶ó °¨¼ÒÇßÀ¸³ª $NO_3;^-$´Â Áõ°¡ÇÏ¿´´Ù.
We surveyed physico-chemical properties of bottom water and sediment to evaluate the influence of sediment on the eutrophication in the downstream of Nagdong River from 1998 to 2000. From May to August, DO concentration of bottom waters dropped below 5 mg $O_2/l$ and $NH_4;^+$ and $PO_4;^{3-}$ concentrations significantly increased in the bottom waters, resulting in the great differences between surface and bottom waters. Fluxes across water-sediment interface would be substantially active in this period. The serial orders of the water fertility or eutrophication were Joman River > Sonagdong River > Nagdong River. The organic nutrient contents of sediment increased toward the lower parts of the river system. Organic contents of the sediment would be under the influence of water pollution and exhibited a negative correlation with sediment bulk-density or particle size. The concentrations of exchangeable inorganic nutrients of sediment were greater than those of pore waters, and $PO_4;^{3-}$, $NH_4;^+$ and $SiO_2$ increased along the sediment depth. $PO_4;^{3-}$ and $NO_3;^-$ concentrations of the pore water were less than the overlying waters, while NH4+ and $SiO_2$ concentrations showed opposite trends. Exchangeable nutrients of sediment could be the repository for t]me nutrient exchange in the water-sediment interface.
 
Ű¿öµå
sediment;pore water;exchangeable nutrient;Nagdong River;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.36, no.3, 2003³â, pp.311-321
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200318317181598)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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