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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.35, no.4, 2002³â, pp.306-311
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( Variations of DOC and Phenolics in Pore-water of Peatlands ) |
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| ½ÀÁö³»ÀÇ ¿ëÁ¸À¯±âź¼ÒÀÇ ÇÔ·®°ú ±¸¼ºÀº ÀÌÂ÷»ý»ê, ´Ù¾çÇÑ »ýÁöÈÇÐÀû ¹ÝÀÀ, ±×¸®°í ¼ö»ýŰèÀÇ ±â´É¿¡ Áß¿äÇÑ ¿µÇâÀ» ¹ÌÄ£´Ù. º» ¿¬±¸¿¡¼´Â ºÏ±¸ÀÌź½ÀÁö (bog, fen, swamp)ÀÇ °ø±Ø¼ö³»ÀÇ ¿ëÁ¸À¯±âź¼Ò¿Í Æä³î°è¿ ¹°ÁúÀÇ ³óµµ¸¦ 1997³âµµ¿¡ 1³â¿¡ °ÉÃÄ Á¶»çÇÏ¿´´Ù. ÀϹÝÀûÀÎ ¹Ì»ý¹°ÀÇ È°¼º (Åä¾ç È£Èíµµ)¿Í Æä³î»êÈÈ¿¼ÒÀÇ È°¼ºµµ ÃøÁ¤ÇÏ¿©, ¿ëÁ¸À¯±âź¼Ò¿Í Æä³î°è¿ ¹°ÁúÀÇ º¯È¿¡ ´ëÇÑ ±âÀÛÀ» ¹àÈ÷°íÀÚ Çß´Ù ¿ëÁ¸À¯±âź¼Ò ³óµµ´Â 25.5-45.4 (bog), 29.2-71.4 (fen), 13.5-87.6 (swamp) mg/L¸¦ º¸¿´°í, Æä³î°è¿ ¹°ÁúÀÇ °æ¿ì¿¡´Â 13.3-45.4 (bog),7.6-29.5 (fen),4.9-30.8 (swamp) mg/LÀÇ º¯ÈÁ¤µµ¸¦ º¸¿´´Ù. Swamp¿¡¼ÀÇ °èÀýÀûÀÎ º¯È¾ç»óÀ» »ìÆìº¸¸é, ³«¿±»ý»êÀÌ ¿ëÁ¸À¯±âź¼ÒÀÇ º¯È¿¡ ¸¹Àº ¿µÇâÀ» ¹ÌħÀ» ¾Ë ¼ö ÀÖ¾ú´Ù Bog¿¡¼ÀÇ ¹Ì»ý¹°È°¼ºµµ¿Í Æä³î»êÈÈ¿¼ÒÀÇ È°¼ºÀÌ °¡Àå ³·°Ô ³ªÅ¸³µ´Âµ¥ À̰ÍÀÌ bog³»ÀÇ ³ôÀº Æä³î°è¿¹°ÁúÀÇ ³óµµ¸¦ ¾ß±â½ÃŲ °ÍÀ¸·Î »ç·áµÈ´Ù. º» ¿¬±¸Àǰá°ú´Â ½ÀÁö³» ¿ëÁ¸À¯±âź¼ÒÀÇ ¾ç »Ó¸¸ ¾Æ´Ï¶ó ±× ÈÇÐÀûÀÎ ±¸¼ºÀÌ ½ÀÁö »ýÁöÈÇп¡¼ Áß¿äÇÔÀ» º¸¿©ÁÖ¾ú´Ù. |
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| The amount and composition of dissolved organic carbon in wetlands are of great importance for their influence in secondary productivity, various biogeochemical processes, and aquatic ecosystem functions. In the present study, we measured variations of DOC and phenolics concentrations in pore-water of three northern peatlands (bog, fen, and swamp) over a 1-year period. General microbial activity (soil respirometry) and phenol oxidase enzyme activity were determined in the same peatlands to elucidate mechanisms underlying the differences in DOC and phenolics contents. The concentrations of DOC varied 25.5-45.4 (bog),29.2-71.4 (fen), and 13.5-87.6 (swamp) mg/L, while phenolic concentrations ranged 13.3-48.1 (bog), 7.6-29.5(fen) , and 4.9-30.8 (swamp) mg/L. The seasonal variations of DOC and phenolics in the swamp suggest that litterfall may be one of the most important factors for the DOC dynamics in such systems. The lowest microbial activity and phenol oxidase activity were found in the bog, which appears to Induce high percentage of phenolic contents in pore-water from bogs. It is also suggested that not only the DOC concentrations but also composition of DOC is of great importance in wetland biogeochernistry. |
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| Ű¿öµå |
| enzymes;recalcitrant;carbon cycle;dissolved organic carbon;peatland; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.35, no.4, 2002³â, pp.306-311
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200218317180467)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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