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  Åä¾ç»ê¼ºÈ­¿Í ¹¦¸ñ ¼ºÀå Growth and Nutrient Status of Seedlings on Acidified Soils
  ±Û¾´ÀÌ : °ü¸®ÀÚ     ³¯Â¥ : 08-03-28 10:54     Á¶È¸ : 9903    
ÀÎÀ§ÀûÀÎ Åä¾ç»ê¼ºÈ­°¡ À㳪¹« ¹¦¸ñÀÇ »ýÀå ¹× ¿µ¾ç»óÅ¿¡ ¹ÌÄ¡´Â ¿µÇâ Effects of Artificially Acidified Soils on the Growth and Nutrient Status of Pinus koraiensis Seedlings <Çѱ¹ÀÓÇÐȸÁö 92(6):642-649 Jour. Kor. For. Soc. 92(6):642-649 2003> Corresponding author yckim@khu.ac.kr

À㳪¹« ¹¦¸ñÀÇ »ýÀå ¹× ¿µ¾ç»óÅ¿¡ ¹ÌÄ¡´Â Åä¾ç»ê¼ºÈ­ÀÇ ¿µÇâÀ» ±¸¸íÇϱâ À§ÇÏ¿© Åä¾ç IL¿¡ H+ÀÇ ÀÌ¿ÂÀÌ °¢°¢ 0, 10, 30, 60 ¹× 90meq°¡ µÇµµ·Ï È¥ÇÕÇÑ °¥»ö»ê¸²Åä¾ç¿¡ 3³â»ý ¹¦¸ñÀ» À̽ÄÇÑ ÈÄ 182ÀÏ °£ »ýÀ°½ÃÄÑ ¾ò¾îÁø °á°úÀÌ´Ù. À㳪¹« ¹¦¸ñÀº À°¼º ÈÄ 8ÁÖºÎÅÍ 60 ¹× 90meqH+ 󸮱¸¿¡¼­ °í»çÇö»óÀÌ ÀϾÀ¸¸ç, 182ÀÏ°£ »ýÀ°ÇÑ °á°ú H+ ºÎÇÏ·®ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó¼­ À¯ÀÇÀûÀ¸·Î »ýÀåÀÌ ÀúÇϵǾú´Ù. ¶ÇÇÑ »ó´ë»ýÀå·ü(RGR)°ú ¼øµ¿È­À²(NAR)Àº ´ëÁ¶±¸¿¡ ºñÇØ 10 ¹× 30meqH+ 󸮱¸¿¡¼­ Áõ°¡ÇÏ¿´À¸³ª, 60 ¹× 90meqH+ 󸮱¸¿¡¼­´Â °¨¼Ò ÇÏ¿´°í, ¿±°ÇÁߺñ(LWR)´Â °¢ 󸮺°·Î Â÷ÀÌ°¡ ¾ø¾ú´Ù. ÇÑÆí À㳪¹« ¹¦¸ñÀÇ °³Ã¼°ÇÁß·®ÀÇ »ó´ëÄ¡¿Í Åä¾çÀÇ ¼ö¿ë¼º ¿ø¼Ò³óµµ·ÎºÎÅÍ »êÃâÇÑ (Ca+Mg+K)/Al ¸ôºñ´Â À¯ÀÇÀûÀÎ Á¤ÀÇ»ó°ü(r=0.99, p<0.001)ÀÌ ÀÎÁ¤µÇ¾úÀ¸¸ç, (Ca+Mg+K)/Al ¸ôºñ°¡ 1.0ÀÏ ¶§ ¾à 40%Á¤µµÀÇ °Ç¹°»ýÀå·®ÀÌ °¨¼ÒÇÏ¿´´Ù.
Three-year-old Korean white pine seedlings were transplanted in the artificially acidified forest soils during growing period for 182 days from April 11 to October 9, 2002. That soil was mixed with artificial acid solution at 0, 10, 30, 60 and 90meq H+ per IL of soil. Some seedlings withered up at 60 and 90meqH+ treatment after 8 weeks. Seedling growth at control after 182 days was greater than 10, 30, 60, 90meqH+ treatment. Also, relative growth rate(RGR) and net assimilation rate(NAR) increased at 10 and 30meqH+ treatments comparing to control, but those decreased at 60 and 90meqH+ treatments. Leaf weight ratio(LWR) did not change by each treatment. There was a significantly positive correlation(r=0.99, p<0.001) between relative total dry weight(TDW) of seedlings and (Ca+Mg+K)/Al molar ratio in soil. When (Ca+Mg+K)/Al molar ratio was 1.0, TDW decreased about 40%.
Key words: Pinus koraiensis, acidified forest soils, total dry weight, (Ca+Mg+K)/Al molar ratio

   

 
   

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