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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.41, no.1, 2008³â, pp.19-25
ÆÈ´çÈ£ Àΰø½Ä¹°¼¶ °ø±Ø¼ö¿¡¼­ ¹Ì»ý¹° °³Ã¼¼ö¿Í ü¿ÜÈ¿¼ÒȰ¼ºµµ
( Bacterial Numbers and Exoenzymatic Activities in Pore Water of Artificial Floating Island Installed in Lake Paldang )
±è¿ëÀü;ÃÖ½ÂÀÍ;¾Èż®; °­¿ø´ëÇб³ ȯ°æ°úÇаú;°­¿ø´ëÇб³ºÎ¼Óȯ°æ¿¬±¸¼Ò;°­¿ø´ëÇб³ ȯ°æ°úÇаú;
 
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ÆÈ´çÈ£¿¡ ¼³Ä¡µÈ Àΰø½Ä¹°¼¶ ½Ä»ý±â¹ÝÀç ³»¿¡¼­ ¼¼±ÕÀÇ »ýÅÂÇÐÀû ±â´ÉÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ½Ä»ý±â¹ÝÀç ³»ÀÇ °ø±Ø¼ö¿Í È£¼ý¹°¿¡¼­ ÃÑÀÎ(TP), ¿ëÁ¸ÀÎ(DIP), ÃÑÁú¼Ò(TN), Áú»ê¼ºÁú¼Ò$(NO_3)$ÃѼ¼±Õ¼ö, Ȱ¼º¼¼±Õ¼ö¿Í ü¿ÜÈ¿¼ÒȰ¼ºµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. Àΰø½Ä¹°¼¶ ½Ä»ý±â¹ÝÀçÀÇ °ø±Ø¼ö¿¡¼­ TN°ú $NO_3$³óµµ´Â °¢°¢ $4.4sim7.5mg;L^{-1}$, $1.2sim3.8mg;L^{-1}$ ¹üÀ§·Î È£¼ý¹°º¸´Ù ¾à 2¹è ³ô°Ô ³ªÅ¸³µÀ¸¸ç, TP¿Í DIP°ªµµ ½Ä»ý±â¹ÝÀç °ø±Ø¼ö¿¡¼­ °¢°¢ $1.4sim4.1mg;L^{-1}$, $0.003sim0.137mg;L^{-1}$ ¹üÀ§·Î TP °ªÀº È£¼ý¹°º¸´Ù ¾à $4sim25$¹è, DIP°ªÀº 5.3¹è ³ôÀº °ªÀ̾ú´Ù. ÃѼ¼±Õ¼ö¿Í Ȱ¼º¼¼±Õ¼ö´Â È£¼ý¹°º¸´Ù 10¹è ÀÌ»ó °ªÀ» º¸¿´´Ù. ¶ÇÇÑ phosphatase ¹× $eta$-glucosidase Ȱ¼ºµµµµ Àΰø½Ä¹°¼¶ °ø±Ø¼ö¿¡¼­ È£¼ý¹°º¸´Ù 10¹è ÀÌ»óÀÇ ³ôÀº °á°ú¸¦ º¸¿© ½Ä»ý±â¹ÝÀç ³»ºÎ¿¡¼­ ¼¼±Õ¿¡ ÀÇÇÑ ¿µ¾ç¿°·ùÀÇ ³óÃà°ú ¿Õ¼ºÇÑ À¯±â¹°ÁúºÐÇØ°¡ ÀϾ°í, ÀÌ °úÁ¤¿¡¼­ ¼öÃÊÀÇ ¼ºÀå, µ¿¹°ÇöûũſÀÇ Áõ½Ä µî »õ·Î¿î ¼ö»ýŰ谡 Á¶¼ºµÈ °ÍÀ¸·Î »ç·áµÈ´Ù.
To evaluate the functions of vegetation mat of artificial floating island (AFI) installed in Lake Paldang, nutrients, such as total phosphorus (TP), dissolved inorganic phosphorus (DIP), total nitrogen (TN) and nitrate $(NO_3)$ and microbial factors such as total bacterial numbers, active bacterial numbers and exoenzymatic activities of $eta$-glucosidase and phosphatase in pore water of medium and bulk lake water were analyzed. The concentration of TN and $NO_3$ in pore water ranged from 4.4 to 7.5mg $L^{-1}$ from 1.2 to 3.8mg $L^{-1}$ respectively, which were ca. 2 times higher than those of lake water. The ranges of TP and DIP of were $1.4sim4.1mg;L^{-1}$ and $0.003sim0.137mg;L^{-1}$ in pore water of media which were $4sim25$ and 5 times higher than those of lake water, respectively. The numbers of total bacteria and active bacteria in pore waterwere about 10 times higher than those of laker water. Also, both phosphatase and $eta$-glucosidase activities of pore water were on an average 10 times higher than those of lake water. These results suggest that the bacteria were playing important role for nutrients concentrating and cycling in media of artificial floating island. And the medium of artificial floating island contained newly created microbial ecosystem, which is responsible for sustaining the growth of macrophytes and the creation of new aquatic ecosystem.
 
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active bacteria;artificial floating island;bacteria;enzymatic activity;nutrients;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.41, no.1, 2008³â, pp.19-25
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200817154059283)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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