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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.32, no.2, 1999³â, pp.92-92
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( Cycling of Urea Carbon and Nitrogen in the Euphotic Zone of Reservoirs in the Han River System ) |
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| ½Ä¹°Çöûũſ¿¡ ÀÇÇÑ ¿ä¼ÒÀÇ ºÐÇØ¼Óµµ¿Í ¿ä¼ÒÇüÅÂÁú¼ÒÀÇ Èí¼ö¼Óµµ¸¦ ÇѰ¼ö°è¿¡ À§Ä¡ÇÑ 6°³ÀÇ ÀΰøÈ£ÀÇ Ç¥¼öÃþ($0{sim}3m$)¿¡¼ ÃøÁ¤ÇÏ¿´´Ù. ¸íÁ¶°ÇÇÏ¿¡¼ ÃøÁ¤ÇÑ ºÐÇØ¼Óµµ¿Í Èí¼ö¼Óµµ´Â °¢°¢ $2{sim}70;{mu}g;ureaC;m^{-3};h^{-1}$°ú $7{sim}170;{mu}g;ureaN;m^{-3};h^{-1}$¿´°í, ¾ÏÁ¶°ÇÇÏ¿¡¼´Â °¢°¢ $1{sim}6;{mu}g;ureaC;m^{-3};h^{-1}$°ú $3{sim}120;{mu}g;ureaN;m^{-3};h^{-1}$¿´´Ù. ÀÌµé ¼Óµµ´Â Ŭ·Î·ÎÇÊ a ÇöÁ¸·® ¹× ±¤ÇÕ¼º°ú »ó°ü°ü°è°¡ ÀÖ¾ú´Ù. 1ÀÏ´ç ºÐÇØ·®°ú Èí¼ö¼Óµµ´Â °¢°¢ $0.1{sim}1.0;mgC;m^{-3};day^{-1}$°ú $0.1{sim}3.8;mgN;m^{-3};day^{-1}$ÀÌ¿´°í, ÀÌµé ¼Óµµ·ÎºÎÅÍ Ç¥¼öÃþ¿¡¼ ¿ä¼ÒÀÇ Ã¼·ù½Ã°£Àº $1{sim}100$ÀÏ·Î ÃßÁ¤µÇ¾ú´Ù. ¿ä¼ÒÀÇ ºÐÇØ¼Óµµ¿Í ¿ä¼ÒÇüÅÂÁú¼ÒÀÇ Èí¼ö¼Óµµ°¡ º¸¿©ÁØ ¾çÀÇ »ó°ü°ü°è¿Í ¾çÀÚÀÇ ºñ´Â ¿ä¼Ò°¡ ºÐÇØµÈ ¾ç¸¸ÅÀÇ ¿ä¼ÒÇüÅÂÁú¼Ò°¡ ½Ä¹°ÇöûũſÀÇ Áú¼Ò¿øÀ¸·Î ÀÌ¿ëµÇ¾ú´Ù´Â °ÍÀ» ³ªÅ¸³½´Ù. |
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| The rates of urea carbon decomposition and urea nitrogen uptake by phytoplankton were examined in the upper euphotic zone of six reservoirs located in the North and South Han River. The rates of urea carbon decomposition and urea nitrogen uptake were 2 to $70;{mu}g;ureaC;m^{-3};h^{-1}$ and 7 to $170;{mu}g;ureaN;m^{-3};h^{-1}$ in the light, and 1 to $16;{mu}g;ureaC;m^{-3};h^{-1}$ and 3 to $120;{mu}g;ureaC;m^{-3};h^{-1}$ in the dark. These rates were related to both the chlorophyll-a amount and photosynthesis. The daily rates of urea carbon decomposition and nitrogen uptake were calculated as 0.1 to $1.0;mgC;m^{-3};day^{-1}$ and 0.1 to $3.8;mgN;m^{-3};day^{-1}$. The estimated turnover time of urea in the surface water was 1 to 100 days. Linear regression analysis and the ratio of urea carbon decomposition to urea nitrogen uptake indicate that equivalent amounts of urea nitrogen with urea carbon decomposition are simultaneously taken up as a nitrogen source for phytoplankton in reservoirs. |
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| Ű¿öµå |
| Urea carbon decomposition;Urea nitrogen uptake;Cycling of urea;Reservoirs in the Han River; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.32, no.2, 1999³â, pp.92-92
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199910102459589)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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