|
|
|
Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.4, 2000³â, pp.350-357
|
´ëÇü ÀΰøÈ£¿¡¼ ¹«±â Áú¼Ò¿ø¿¡ ´ëÇÑ Á¡¿À¿°¿ø ¹× À¯ÀÔ¼öÀÇ ¿µÇâ
( An Influence of Point-Source and Flow Events on Inorganic Nitrogen Fractions in a Large Artificial Reservoir ) |
| ¾È±¤±¹; Çѱ¹ ÈÇבּ¸¼Ò;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| º» ¿¬±¸´Â 1993${sim}$1994³â ´ëûȣ 17°³ Á¶»çÁöÁ¡¿¡¼ Á¡¿À¿°¿ø ¹× °èÀýÀû À¯ÀÔ¼ö¿¡ ´ëÇÑ ¹«±âÁú¼Ò¿øÀÇ ´Ùº¯Àû µ¿Å¿¡ ´ëÇÏ¿© Æò°¡ÇÏ¿´´Ù. ¿¬±¸±â°£ µ¿¾È ÃÑÁú¼Ò(TN)´Â Æò±Õ 1.53 mg/LÀ¸·Î, $0.70{sim}2.56;mg/L$ ¹üÀ§¿¡ ÀÖ¾ú´Ù. ¿ëÁ¸ ¹«±âÁú¼Ò(DIN)´Â °èÀý ¹× Á¶»çÁöÁ¡¿¡ °ü°è¾øÀÌ ÃÑÁú¼ÒÀÇ 90%ÀÌ»óÀ» Â÷ÁöÇÏ¿© Áú¼Ò°¡ dzºÎÇÑ ºÎ¿µ¾ç-°ú¿µ¾ç »óÅÂÀÇ È£¼öÀÓÀÌ È®ÀεǾú´Ù. ¿ëÁ¸ ¹«±âÁú¼ÒÀÇ $67{sim}94%$´Â Áú»ê¼º-Áú¼ÒÀÎ ¹Ý¸é, ¾Ï¸ð´Ï¾Æ¼º-Áú¼Ò´Â ¿ëÁ¸ ¹«±âÁú¼ÒÀÇ 5%ÀÌÇÏ·Î ±¸¼ºµÇ¾ú´Ù. 1993³â À帶µ¿¾È Áú»ê¼º-Áú¼Ò´Â ºø¹°°ú È£¼ö¹°ÀÇ È¥ÇÕÀÇ °á°ú·Î¼ »ó·ù¿ª¿¡¼ Èñ¼®µÈ ¹Ý¸é, ¾Ï¸ð´Ï¾Æ¼º-Áú¼Ò´Â À帶 Àü¿¡ ºñÇØ 100%ÀÌ»ó Áõ°¡¸¦ º¸¿´´Ù. ¾Ï¸ð´Ï¾Æ¼º-Áú¼Ò´Â °¿ì·®°ú Á¤ »ó°ü°ü°è(r=0.85; p<0.001)¸¦ º¸¿´°í, ¼ö ü·ù½Ã°£(r = -0.90; p<0.001) ¹× Àü±âÀüµµµµ (r = -0.78, p<0.001)¿Í´Â ¿ª »ó°ü°ü°è¸¦ º¸¿´´Ù. ÀÌ·± °á°ú¿¡ µû¸£¸é, ¾Ï¸ð´Ï¾Æ¼º-Áú¼Ò´Â À帶±â¿¡ È£¼ö ¿ÜºÎ·ÎºÎÅÍ À¯ÀԵǾúÀ½À» Á¦½ÃÇÑ´Ù. ¿¬±¸±â°£ 2³â ¸ðµÎ Æò±Õ ÃÑÁú¼Ò´Â È£¼ö³» »ó·ù ¹× ÇÏ·ù¿¡¼º¸´Ù °¡µÎ¸® ¾ç½ÄÀå ¹× Æó¼ö ó¸®ÀåÀÌ À§Ä¡ÇÑ Áß·ù¿ª¿¡¼ ³ô¾Ò´Ù. Áß·ù¿ª¿¡¼ ÀÌ·± Ư¼ºÀº À¯ÀÔ·®ÀÌ ÀûÀº 1994³âÇÏÀý±â µ¿¾È Á¡ ¿À¿°¿ø¿¡¼ ÃàÀûµÈ ¿À¿°ºÎÇÏ Áõ°¡ÀÇ °á°ú·Î¼ °¡Àå ½ÉȵǾú´Ù. º» ÀΰøÈ£¿¡¼ ÃÑÁú¼Ò ºÐÆ÷´Â È£¼ö³» »ó${cdot}$ÇÏ·ù¿ª »çÀÌ¿¡ Å« Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò°í, À¯ÀÔ·® º¸´Ù´Â Á¡¿À¿°¿ø¿¡ ÀÇÇØ Á÷Á¢ÀûÀ¸·Î °áÁ¤µÇ´Â °ÍÀ¸·Î »ç·áµÈ´Ù. |
|
| This paper evaluated the influence of point source and flow events on inorganic nitrogen fractions at 17 sites of Taechung Reservoir during 1993${sim}$1994. Total nitrogen (TN) averaged 1.53 mg/L during the study and ranged between 0.70 and 2.56 mg/L. Dissolved inorganic nitrogen(DIN) accounted for >90% of TN regardless of season and location, indicating a nitrogen-rich system showing eutrophic${sim}$hypereutrophic conditions. Some 67${sim}$94% of DIN was NO$_{3}$-N, whereas mean level of NH$_{4}$-N was less than 5% of DIN. During monsoon 1993, dilution of NO$_{3}$-N was evident in the headwaters as a result of mixing of lake water with rain water, while NH$_{4}$-N increased>100% compared to the premonsoon. Values of NH$_{4}$-N had a positive correlation with rainfall (r=0.85; p<0.001) and negative correlations with theoretical water residence time(r=-0.90; p<0.001) and conductivity(r=-0.78, p<0.001), respectively. These outcomes suggest that NH$_{4}$-N came from external input from the watershed during the monsoon. In both years, mean TN was greater in the mid-lake sites than any other sites. A great amount of TN in the mid-lake was most pronounced in monsoon 1994 because of an accumulated influence of the point sources during low inflow. Overall data suggest that concentrations of TN in this system did not show large differences along the longitudinal gradients and its distributions is likely determined by point-sources rather than inflow regime. |
| |
| Ű¿öµå |
| Nitrogen;Ammonia;Nitrate;Monsoon;Point source;Reservoir;Korea; |
| |
|
|
 |
|
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.4, 2000³â, pp.350-357
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317176393)
¾ð¾î : ¿µ¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|