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Çѱ¹»ýÅÂÇÐȸ / v.26, no.6, 2003³â, pp.321-326
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( Effects of Shading Treatment on Photosynthetic Activity of Acanthopanax senticosus )
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Â÷±¤Ã³¸®¿¡ ÀÇÇÑ °¡½Ã¿À°¥ÇÇÀÇ »ý»óÃËÁøÇö»óÀ» ±¸¸íÇϱâ À§Çؼ­, Â÷±¤¸·À¸·Î Àüõ±¤À» 55%, 75%, 90% Â÷±¤ ó¸®ÇÑ Á¶°Ç°ú ³ëÁö¿¡¼­ 3³â°£ »ýÀåÇÑ °³Ã¼ÀÇ ±â°üº° °Ç¹°ÁßÀ» Á¶»çÇϰí, ±¤-±¤ÇÕ¼º°î¼±°ú A-Ci°î¼±À» ÅëÇÏ¿© ±¤ÇÕ¼º°èÀÇ Æ¯¼ºÀ» Á¶»çÇÏ¿´´Ù. ±× °á°ú 75%ÀÇ Â÷±¤Á¶°Ç¿¡¼­´Â ÁöÇϺο¡ ´ëÇÑ Áö»óºÎÀÇ ºñÀ²ÀÌ ³ô¾ÆÁö´Â Çö»óÀÌ ÀÖ¾úÀ¸³ª, °¡Àå ³ôÀº °Ç¹°ÁßÀ» ³ªÅ¸³» »ýÀåÃËÁø¿¡ È¿À²ÀûÀÓÀÌ È®ÀεǾú´Ù. ±×¸®°í Â÷±¤Ã³¸®¿¡ ÀÇÇØ¼­ ¿±¸éÀû´çÀÇ ¿±·Ï¼Ò a+b ÇÔ·®°ú a/b°¡ °¨¼ÒÇϰí ÀÙÀÌ ¾ã¾ÆÁö´Â ¹ÝÀÀÀ» ³ªÅ¸³ÂÀ¸¸ç, °³¿± ¹× °³Ã¼ ´çÀÇ ¿±¸éÀûÀÌ Áõ°¡ÇÏ´Â µîÀÇ ³·Àº ±¤µµ¿¡ ´ëÇÑ ÀûÀÀ¹ÝÀÀÀÌ È®ÀεǾú´Ù. ±¤ÇÕ¼º°è¿¡¼­´Â Â÷±¤Ã³¸®¿¡ ÀÇÇØ¼­ ¼ø¾çÀÚ¼öÀ²(apparent quantum yield)ÀÌ ³ô¾ÆÁö°í ±¤º¸»óÁ¡ÀÌ ³·¾ÆÁ³À¸¸ç, ź¼Ò°íÁ¤È¿À²(carboxylation efficiency)°ú ÀçÀλêÈ­¼Óµµ°¡ »ó½ÂÇÏ¿´´Ù. ±×·¯³ª ¼ø¾çÀÚ¼öÀ²Àº Â÷±¤Ã³¸®±¸ÀÇ °Ç¹°Áß »ó½Â°ú´Â ´ëÀÀµÇÁö ¾Ê´Â °á°ú¸¦ ³ªÅ¸³»´Â ¹Ý¸é¿¡ ź¼Ò°íÁ¤È¿À²Àº °Ç¹°Áß »ó½Â°ú ´ëÀÀµÈ °á°ú¸¦ ³ªÅ¸³», Â÷±¤Ã³¸®±¸ÀÇ ±¤ÇÕ¼º´É·Â Áõ°¡°¡ ź¼Ò°íÁ¤°èÀÇ È°¼ºÁõ°¡¿¡ ±âÀÎÇÔÀÌ ½Ã»çµÇ¾ú´Ù. ±¤ÇÕ¼º¿¡ ´ëÇÑ ¼öºÐÀÌ¿ëÈ¿À²Àº Â÷±¤Ã³¸®±¸°¡ ´ëÁ¶±¸¿¡ ºñÇÏ¿© ¾à°£ ³·¾ÒÀ¸³ª, ¸ðµç Â÷±¤Ã³¸®±¸°¡ Æ÷Ç÷¯·ù¿Í °°Àº ¾ç¼ö¿¡ ºñÇØ ³ôÀº °ªÀ» ³ªÅ¸³Â´Ù.
This study was conducted to investigate and effects of shading treatment on photosynthetic activity of Acanthopanax senticosus. We investigated plant growth, light response curve and A-Ci curve to photosynthesis of A. senticosus at 55%, 75%, and 90% shading treatment. As results, the ratio of above-ground/under-ground biomass was increased at 75% shaded condition and showed highest dry biomass. Under shaded conditions, plants had lower chlorophyll a+b content and a/b ratio and also showed thinner leave. But shaded plants showed higher leaf area and higher total leaf area per a plant. This apparently indicates adapted responses to shaded treatment. Effects of shading treatments on photosynthetic activity were higher in apparent quantum yield, carboxylation efficiency, re-phosphrylation but lower in light compensation point. These results suggested that higher photosynthesis rates in shaded treatments were due to activated carboxylation efficiency. Shading treatment had lower water use efficiency thatn controls but still higher than other tree species.
 
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The Korean Journal of Ecology / v.26, no.6, 2003³â, pp.321-326
Çѱ¹»ýÅÂÇÐȸ
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922123336)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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