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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.40, no.3, 2007³â, pp.468-480
µµ½ÃÈ­ Á¤µµ¿¡ µû¸¥ Æ÷õõ°ú ¿µÆòõÀÇ µ¹ ºÎÂø±ÔÁ¶ ±ºÁý º¯È­
( Changes of Epilithic Diatom Communities according to Urbanization Influence in the Pocheon and Youngpyeong Streams )
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µµ½ÃÈ­´Â ÇÏõÀÇ ¼ö¸®, ¼öÁú ¹× ¼ö·ÎÀÇ ÇüŸ¦ º¯È­½Ã۰í, ¼ö»ýŰèÀÇ Á¶¼ºÀ» º¯È­½Ã۰í ÀÖ´Ù. ÃÖ±Ù Æ÷õõ°ú ¿µÆòõ ÁÖº¯¿¡ ¸¹Àº Àα¸¿Í ¼Ò±Ô¸ðÀÇ °øÀå µîÀÌ À¯ÀÔµÇ¾î µµ½ÃÈ­µÊÀ¸·Î½á ¿À, Æó¼öÀÇ ¹æ·ù·®ÀÌ Áõ°¡ÇÏ¿´´Ù. º» ¿¬±¸´Â µµ½ÃÈ­ÀÇ Á¤µµ¿¡ µû¶ó ÇÏõ »ýŰ踦 ±¸¼ºÇϰí ÀÖ´Â µ¹ ºÎÂø±ÔÁ¶ ±ºÁýÀÇ Á¶¼ºÀÌ ´Ù¸¥ °Í¿¡ ±âÃÊ·Î ÇÏ¿© µ¹ ºÎÂø±ÔÁ¶ ±ºÁýÀÇ Á¶¼º, ¿ìÁ¡Á¾ ¹× »ýűº º° Á¾ Á¶¼º°ú »ý¹°Áö¼ö(DAIpo)¿¡ ÀÇÇÑ ¼ö ȯ°æÀ» Æò°¡ÇÏ¿´´Ù. µÎ ÇÏõÀÇ µµ½ÃÈ­ Áö¼ö´Â Æ÷õõÀÇ Á¤Á¡ P-3¿Í P-5¿¡¼­ °¢°¢ 85¿Í 91·Î ¸Å¿ì ³ôÀº ¹Ý¸é¿¡ ¿µÆòõ ÁÖº¯ÀÇ µµ½ÃÈ­Áö¼ö´Â ¾à 20 ÀÌÇÏ¿´´Ù. º» Á¶»ç¿¡¼­ µ¹ ºÎÂø±ÔÁ¶´Â ÃÑ 141Á¾·ù·Î½á 2¸ñ, 8°ú, 30¼Ó, 128Á¾, 12º¯Á¾, 1¹Ìµ¿Á¤Á¾À¸·Î ±¸¼ºµÇ¾ú´Ù. ÃâÇö Á¾¼ö´Â Æ÷õõ¿¡¼­$11{sim}36$Á¾·ùÀÇ ¹üÀ§¿´°í, ¿µÆòõ¿¡¼­ $14{sim}45$Á¾·ùÀÇ ¹üÀ§¿´´Ù. ¿ìÁ¡Á¾Àº Æ÷õõ¿¡¼­ Navicular saprophila, N. subminuscula, Nitzschia palea, Gomphonema pseudoaugur µîÀ̾úÀ¸¸ç, ¿µÆòõ¿¡¼­ Achnanthes alteragracillima, A. convergens, A. minutissima, N. minima, N. fonticola, N. frustulum¿Í Cymbella minuta var. silesiaca µîÀ¸·Î½á µÎ ÇÏõÀÇ µµ½ÃÈ­ Á¤µµ¿¡ µû¶ó ¶Ñ·ÇÇÑ Â÷À̸¦ ³ªÅ¸³»¾ú´Ù. µµ½ÃÈ­ Áö¼ö¿Í EC, BOC, COD, TN, TP. ¹× DAIpo µîÀº ³ôÀº »ó°ü°ü°è $(r^2>0.8)$¸¦ ³ªÅ¸³»¾ú´Ù. µµ½ÃÈ­¿¡ µû¶ó À¯±â¿À¿°ÀÇ Á¤µµ°¡ ¸Å¿ì ´Ù¸£¸ç, ÀÌ¿¡ µû¶ó µ¹ ºÎÂø ±ÔÁ¶ÀÇ »ýűºÀÌ Æ÷õõ¿¡¼­´Â È£¿ÀʼºÁ¾ÀÇ Á¾¼ö ¹× »ó´ëºóµµ°¡ ¸Å¿ì ³ôÀº ¹Ý¸é ¿µÆòõ¿¡¼­´Â ȣû¼öÁ¾ÀÇ Á¾¼ö ¹× »ó´ëºóµµ°¡ ³ô¾Ò´Ù. »ý¹°Áö¼ö(DAIpo)¿¡ ÀÇÇÑ µÎ ÇÏõÀÇ ¼öÁúÀº Æ÷õõ¿¡¼­ Á¶»ç µ¿¾È °­ºÎ¼ö¼º(P-3, 4, 5)À» ³ªÅ¸³»¾ú°í, ¿µÆòõ¿¡¼­´Â ºóºÎ¼ö¼º(Y-1)¿¡¼­ °­ºÎ¼ö¼º(Y-4)±îÁö ´Ù¾çÇÏ°Ô ³ªÅ¸³µ´Ù.
The urbanization is altering the hydrology, water quality, channel form of waterway and changing the composition of biological communities in the aquatic ecosystem. Recently, towns grew bigger by the drift of large numbers of people and the medium and small leather and dyeing industries around the Pocheon and Youngpyeong streams. The discharges of sewage were increased by them. The UII (urban intensity index) was 85 (st. P-3) and 91 (st. P-6) in the Pocheon stream and about 20 in the Youngpyeong stream. A total 141 taxa of epilithic diatoms which were composed of 2 order, 8 family, 30 genera. Dominant species were Navicula saprophila, N. subminuscula, Nitzschia palea, Gomphonema pseudoaugur in the Pocheon stream and Achnanthes alteragracillima, A. convergens, A. minutissima, N. minima, N. fonticola, N. frustulum and Cymbella minuta var. silesiaca in the Youngpyeong stream. It Showed the different composition of dominant species by the urbanization near two streams. In the relationships between UII and environmental factors such as EC, BOD, COD, TN, TP and DAIpo, UII showed the high relations $(r^2>0.8)$. It was the difference of organic pollution according to urbanization. It therefore, was higher the relative abundance and more the numbers of saprophilous taxa in the Pocheon stream than the Youngpyeong stream. The water quality of two streams by biological indicators(DAIpo) was polysaprobic state(st. P-3, P-4, P-5) in the Pocheon stream and was oligosaprobic (Y-1), mesosaprobic (Y-2, 3) and polysaprobic state (Y-4) in the Youngpyeong stream during the investigation periods.
 
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epilithic diatom;DAlpo;organic pollution;UII (urban intensity index);urbanization;Pocheon stream;Youngpyeong stream;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.40, no.3, 2007³â, pp.468-480
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200709905953154)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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