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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.39, no.4, 2006³â, pp.435-444
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ºÏ±¸ ÀÌź½ÀÁöÀÇ »ýÁöÈÇÐÀû ¹ÝÀÀ¿¡ ÀÖ¾î¼ Ã¼¿ÜÈ¿¼ÒÀÇ Á߿伺-¹Ì·®±âü ¹ß»ý·® ¹× ¿ëÁ¸À¯±âź¼Ò µ¿Å¿ÍÀÇ ¿¬°ü¼º¿¡ ´ëÇÏ¿©
( Importance of Extracellular Enzyme Activities in Northern Peatland Biogeochemistry-Possible Coupling with Trace Gas Emission and DOC Dynamics ) |
| ;¹Ú¼®¼ø;°È£Á¤; ;ÀÌÈ¿©ÀÚ´ëÇб³ ȯ°æ°øÇаú;ÀÌÈ¿©ÀÚ´ëÇб³ ȯ°æ°øÇаú;
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| ¼¼ Á¾·ùÀÇ ÀÌź½ÀÁö (bog, fen, swamp)¿¡¼ ź¼öÀ¯±â¹° ºÐÇØ¿¡ °ü¿©ÇÏ´Â ÀϱºÀÇ Ã¼¿Ü È¿¼Ò Ȱ¼ºµµ. ¹Ì·® ±âü ($CO_2$¿Í $N_2O$), DOC º¯È µîÀ» 12°³¿ù¿¡ °ÉÃÄ ÃøÁ¤ÇÏ¿´´Ù ${eta}-glucosidase$, cellobiohydrolase, ${eta}-xylosidase$, N-acetylglucosaminidase µîÀÌ °¢°¢ $0.008-0.066;{mu}mole;g^{-1};min^{-1}$, $0.003-0.021;{mu}mole;g^{-1};min^{-1}$, $0.003-0.016;{mu}mole;g^{-1};min^{-1}$, $0.004-0.047;{mu}mole;g^{-1};min^{-1}$ ¹üÀ§ÀÇ È°¼ºµµ¸¦ º¸¿´´Ù. Àü¹ÝÀûÀ¸·Î swamp¿¡¼ÀÇ È°¼ºµµ°¡ °¡Àå ³ô¾Ò°í, fen°ú bogÀÇ ¼ø¼·Î ³ªÅ¸³µ´Ù. ¼¼ Á¾·ù ½ÀÁöÀÇ ÀڷḦ ¸ðµÎ ÇÕÃÆÀ» ¶§, È¿¼ÒÀÇ È°¼ºµµ´Â ¹Ì·® ±âüÀÇ ¹ß»ý·®À̳ª °¡¿ëÇÑ Åº¼ÒÀÇ ¾ç°ú À¯ÀÇÇÑ ¾çÀÇ »ó°ü°ü°è¸¦ º¸¿´´Ù. ¶ÇÇÑ, 4°¡Áö È¿¼Ò Ȱ¼ºµµÀÇ Æò±Õ°ªÀº ¹Ì·®±âü¿Í °¡¿ëÇÑ Åº¼Ò·®ÀÇ º¯È¿¡ ÀÖ¾î¼ 20-40% Á¤µµÀÇ º¯À̸¦ ¼³¸íÇÒ ¼ö ÀÖ¾ú´Ù. ÀÌ °á°ú·Î ºñÃß¾î, À¯±âź¼Ò ¹«±âÈ¿¡ °ü¿©ÇÏ´Â È¿¼Ò´Â ºÏ±¸ ÀÌź½ÀÁö¿¡¼ ¹Ì·®±âü ¹ß»ý°ú DOC µ¿Å¿¡ Áß¿äÇÑ ¿ªÇÒÀ» ÇÏ´Â °ÍÀ¸·Î »ç·áµÈ´Ù. |
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| A suite of extracellular enzyme activities involved in organic carbon decomposition were determined in three northern peatlands (a bog, a fen, and a swamp) over a 12 month period along with trace gas ($CO_2$ and $N_2O$) flux and DOC dynamics in the wetlands. The activities varied $0.008-0.066;{mu}mole;g^{-1};min^{-1}$, $0.003-0.021;{mu}mole;g^{-1};min^{-1}$, $0.003-0.016;{mu}mole;g^{-1};min^{-1}$, $0.004-0.047;{mu}mole;g^{-1};min^{-1}$, for ${eta}-glucosidase$, cellobiohydrolase, ${eta}-xylosidase$, and N-acetylglucosaminidase, respectively. In general, the activities were highest in the forested swamp followed by the fen and the bog. When the data from three wetlands are combined, the enzyme activities exhibited significant positive correlations with trace gas emission and available carbon. Further, the average activity of 4 enzymes explained about 20-40% of the variations of trace gas emssion and available carbon. The results indicate that enzymes related to the mineralization of organic carbon may play an important role in trace gas flux and DOC dynamics in northern peatlands. |
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| Ű¿öµå |
| cellulose;organic carbon;peat;soil enzyme;wetland; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.39, no.4, 2006³â, pp.435-444
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200618317187756)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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