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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.38, no.1, 2005³â, pp.45-53
´ë¾Ï»ê °íÃþ½À¿øÀÇ È¯°æº¯Ãµ
( Environmental Change of High Moor in Mt. Dae-Am of Korean Peninsula )
;°­»óÁØ; Nagoya ´ëÇÐ ´ë±â¼ö±Ç°úÇבּ¸¼Ò;ÃæºÏ´ëÇб³ »ç¹ü´ëÇÐ °úÇб³À°ÇкÎ;
 
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°­¿øµµ ¾ç±¸±º°ú ÀÎÁ¦±ºÀÇ °æ°è¿¡ ÀÖ´Â ´ë¾Ï»ê ¿ë´ËÀÇ ÀÌź ÅðÀû¹°À» »ç¿ëÇÏ¿© ź¼Ò ¹× Áú¼Ò µ¿À§¿ø¼ÒºñÀÇ ÇØ¼®À» ÅëÇÏ¿© ¿ë´ËÀÇ È¯°æº¯ÃµÀÇ ÇØ¼®À» ½ÃµµÇÏ¿´´Ù. Ç¥Ãþ 0 ${sim}$ 5 cmÀÇ ¿¬´ë´Â BP190³â, 30 ${sim}$ 35 cmÃþ ¹× 50 ${sim}$ 55 cmÃþ¿¡¼­´Â °¢°¢ BP870, BP1870³âÀ¸·Î ÃøÁ¤µÇ¾ú´Ù. À¯±â¹° ÇÔ·®ÀÌ ³ôÀº 0 ${sim}$ 35 cmÀÇ ÀÌźÃþ¿¡¼­ bulkÀÇ ÅðÀû¼Óµµ´Â ¾à 0.4mm/³âÀ¸·Î °è»êµÇ¾ú´Ù. ±Ý¹ø ½Ã·á¸¦ äÃëÇÑ ÁöÁ¡ÀÇ ÅðÀû¹° ÃÖÇÏÃþÀÎ 75 ${sim}$ 80 cmÃþÀÇ $^{14}C$¿¬´ë´Â ¾à BP1900³âÀ¸·Î ÃøÁ¤µÇ¾ú°í 50 ${sim}$ 55 cm¿Í 75 ${sim}$ 80cmÃþÀÇ ÃøÁ¤¿¬´ë°¡ °ÅÀÇ ºñ½ÁÇÑ °ÍÀ¸·Î º¸¾Æ¼­ ¿ë´ËÀÇ ½ÉÃþºÎ´Â ¿ø·¡ÀÇ »ï¸² Åä¾çÀÎ °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. 50 ${sim}$ 55 cmÃþÀº ¸ð·¡ ¼ººÐÀÌ Æ÷ÇԵǾî ÀÖ°í ¶ÇÇÑ À¯±â¹° ÇÔ·®ÀÌ ³·Àº °ÍÀ¸·Î º¸¾Æ ÁÖº¯ Áö¿ªÀÇ Ä§½ÄÀ¸·ÎºÎÅÍ À¯·¡µÇ¾úÀ» °¡´É¼ºÀÌ ÀÖ´Ù°í ÆÇ´ÜµÇ¾ú´Ù. ÀÌ»óÀÇ °á°ú·ÎºÎÅÍ º» ¿¬±¸¿¡¼­ ÀÌ¿ëÇÑ ½Ã·áÀÇ Ã¤Ãë ÁöÁ¡¿¡¼­´Â BP1900³â °æºÎÅÍ ½À¿øÈ­°¡ µÇ¾ú´Ù°í ÃßÁ¤µÈ´Ù. À¯±âź¼Ò µ¿À§¿ø¼Òºñ, ÃÑ Áú¼Òµ¿À§¿ø¼Òºñ´Â ±íÀÌ ¹æÇâÀ¸·Î º¯µ¿ÀÌ º¸¿´´Ù. ÀÌ·¯ÇÑ »ç½Ç·ÎºÎÅÍ ´ë¾Ï»ê °íÃþ½À¿øÀÇ ¹ß´Þ°úÁ¤¿¡ À־ ±âÈÄÁ¶°ÇÀÇ º¯µ¿°ú ÇÔ²² Áú¼Ò¼øÈ¯°èÀÇ º¯È­µµ ÀÖ¾ú´ø °ÍÀ¸·Î Ãß·Ð µÇ¾ú´Ù.
The environmental change of Yong-nup in Mt. Dae-Am, which is located at the northern part of Kangwon-Do, Korea, was assesed with peat sedimentary carbon and nitrogen isotope analysis. The surface layer of the peat (0 ${sim}$ 5 cm) was 190 year BP, and the middle layers (30 ${sim}$ 35 cm and 50 ${sim}$ 55 cm) were 870 year BP and 1900 year BP, respectively. Bulk sedimentation rate was estimated to be about 0.4 mm $year^{-1}$ for 0 cm to 30 cm and 0.15 mm $year^{-1}$ for 35 cm to 50 cm. The $^{14}C$ age of the bottom sediment (75 ${sim}$ 80 cm) collected and measured in this study was about 1900 year BP, although it was measured that the $^{14}C$ of the lowest bottom sediment in Yong-nup was 4105 ${pm}$ 175 year BP (GX-23200). Since the $^{14}C$ ages for 50 ${sim}$ 55 cm and 75 ${sim}$ 80 cm layers were almost the same as 1890 ${pm}$ 80 fear BP (NUTA 5364) and 1850 ${pm}$ 90 year BP (NUTA 5462), respectively, we have estimated that the deep layers (55 ${sim}$ 80 cm) in the high moor were the original forest soil. The low organic C and N contents in the deeper layers supported the inference. The sediment of 50 ${sim}$ 55 cm layer contains much sandy material and showed very low organic content, suggesting the erosion (flooding) from the surrounding area. In this context, the Yong-nup, high moor, of Mt. Dae-Am, might have developed to the sampling site at about 1900 year BP. The ${delta}^{13}C$ values of organic carbon and the ${delta}^{15}N$ values of total nitrogen in the peat sediments fluctuated with the depths. The profile of ${delta}^{13}C$ may indicate that the Yong-nup of Mt. Dae-Am have experienced the dry-wet and cool-warm period cycles during the development of the high moor. The ${delta}^{15}N$ may indicate that the nitrogen cycling in the Yong-nup have changed from the closed (regeneration depending) system to the open (rain $NO_3;^-$ and $N_2$ fixation depending) system during the development of the high moor.
 
Ű¿öµå
high moor;stable isotope;carbon isotope ratio;nitrogen isotope ratio;absolute year;bulk sedimentation rate;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.38, no.1, 2005³â, pp.45-53
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200518317183950)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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