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Çѱ¹»ýÅÂÇÐȸ / v.29, no.3, 2006³â, pp.237-245
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ÈÀü ÈÄ ¹¬¹çÀÇ ½Ä»ý õÀÌ¿¡ µû¸¥ ½Ä¹°·®, ¼ø ÀÏÂ÷ »ý»ê¼º ¹× P/B ºñÀÇ º¯È
( Changes of Biomass, Net Primary Productivity and P/B Ratio during Abandoned Field Succession after Shifting Cultivation in Korea ) |
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| °¿øµµ Æòⱺ ÀÏ´ë¿¡¼ ÈÀü ÈÄ ¹¬¹çÀÇ ½Ä»ý õÀÌ¿¡ µû¸¥ ½Ä¹°·®, ¼ø ÀÏÂ÷ »ý»ê¼º ¹× P/B ºñÀÇ º¯È¸¦ Á¶»çÇÏ¿´´Ù. Ãʺ»ÀÇ Áö»óºÎ ½Ä¹°·®Àº 5³âÂ÷ ¹¬¹ç¿¡¼ 3.8 ton/ha·Î °¡Àå ¸¹¾Ò´Ù. ³«¿± °ÇÁß·®Àº 50³âÂ÷ ¹¬¹ç±îÁö Áõ°¡ÇÑ ´ÙÀ½ °¨¼ÒÇÏ´Â Æ÷¹°¼±Çü º¯È¸¦ ³ªÅ¸³»¾ú´Ù. õÀ̰¡ ÁøÇàµÊ¿¡ µû¶ó Èä°í ´Ü¸éÀûÀº ·Î±× ÇÔ¼öÀûÀ¸·Î Áõ°¡ÇÏ´Â °æÇâÀ» ³ªÅ¸³»¾ú´Ù. ±³¸ñÀÇ ¸ñº» ¼ö´Â 15³âÂ÷ ¹¬¹ç±îÁö ºü¸£°Ô Áõ°¡ÇÏ´Ù°¡ °æ°ú ³â ¼ö¿¡ µû¶ó ÀÚ°¡ ¼ÔÀ½Áú °úÁ¤À» °ÅÃÄ °¨¼ÒÇÏ´Â °æÇâÀ̾ú´Ù. 80³âÂ÷ ¹¬¹ç¿¡¼ DBH µî±Þ¿¡ µû¸¥ ¸ñº»ÀÇ ºÐÆ÷´Â ¿ª J ÀÚÇüÀ» ³ªÅ¸³»¾ú°í, ¿ìÁ¡Á¾Àº ½Å°¥³ª¹«À̾ú´Ù. ½Ä¹° ÇöÁ¶·®Àº õÀÌ Ãʱâ¿Í Èı⠴ܰ迡¼ ¿Ï¸¸ÇÑ Áõ°¡¸¦ ³ªÅ¸³»¾ú°í, Á߱⠴ܰèÀÎ $10{sim}50$³âÂ÷ ¹¬¹ç¿¡¼ ºü¸£°Ô Áõ°¡ÇÏ¿´´Ù. 5, 10, 20, 50 ¹× 80³âÂ÷ ¹¬¹çÀÇ ½Ä¹° ÇöÁ¸·®Àº °¢°¢ 5, 14, 75, 251 ¹× 373 ton/ha·Î ÃßÁ¤µÇ¾ú´Ù. ¿¬°£ ¼ø »ý»ê¼ºÀº Ãʱâ 35³â°£ Á¡ÁøÀûÀÎ Áõ°¡ ÈÄ °¨¼ÒÇÏ¿© Á¡Â÷ ¾ÈÁ¤ÈÇÏ´Â °æÇâÀ» ³ªÅ¸³»¾ú´Ù. ¿¬°£ ¼ø ÀÏÂ÷ »ý»ê¼ºÀÇ Áõ°¡ ¼Óµµ´Â õÀÌ Áß±â ´Ü°è º¸´Ù Ãʱ⠴ܰ迡¼ ºü¸£°Ô Áõ°¡ÇÏ¿´´Ù. 5, 10, 20, 35, 50 ¹× 80³âÂ÷ ¹¬¹çÀÇ ¼ø ÀÏÂ÷ »ý»ê¼ºÀº °¢°¢ 8.6, 9.3, 12.9, 15.1, 13.7 ¹× 3.6 ton/ha/yrÀ̾ú´Ù. P/B ºñÀ²Àº õÀ̰¡ ÁøÇàµÊ¿¡ µû¶ó Áö¼ö ÇÔ¼öÀûÀ¸·Î °¨¼ÒÇÏ´Â °ÍÀ¸·Î ÃßÁ¤µÇ¾ú´Ù. 5, 10, 20, 50 ¹× 80³âÂ÷ ¹¬¹ç¿¡¼ ÃßÁ¤µÈ P/B ºñÀ²Àº °¢°¢ 0.60, 0.39, 0.19, 0.06 ¹× 0.01À̾ú´Ù. ÀÌ·¯ÇÑ °á°ú´Â Odum(1969)ÀÌ Á¦½ÃÇÑ »ï¸²ÃµÀÌ °úÁ¤ÀÇ »ý¹° ¿¡³ÊÁö·Ð°ú Àß ºÎÇÕÇÏ¿´´Ù. |
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| Changes of the biomass, net primary productivity and P/B ratio during abandoned field succession after shifting cultivation were investigated in Pyoungchang, Gangwon-Do, Korea. Aboveground standing biomass of herb species showed the maximum value (3.8 ton/ha) in the 5 year old-field, and decreased thereafter. Litter dry weight was depicted as a parabola form showing the gradual increment during the first 50 years and slight decrease thereafter. Basal area tended to increase logarithmically during abandoned field succession. Tree density showed the gradual increment during the first 15 years and decreased thereafter by the self-thinning process. In the later successional stage (80 years old-field), the shoot density distribution of the tree species by DBH class showed the reverse J shaped curve and Quercus mongolica dominated. Total standing biomass increased slowly in the earlier successional stages and later successional stages, and increased rapidly during the mid-successional stages ($10{sim}50$ years old-field). Total standing biomass in the 5, 10, 20, 50 and 80 years old-fields were estimated 5, 14, 75, 251 and 373 ton/ha, respectively. Annual net primary productivity were depicted as a parabola form showing the gradual increment during the first 35 years and declined thereafter. The increment rates of the annual net primary productivity in the earlier successional stages showed the higher value than mid-successional stages. The annual net primary productivities in the 5, 10, 20, 35, 50 and 80 years old-field were estimated 8.6, 9.3, 12.9, 15.1, 13.7 and 3.6 ton/ha/yr, respectively. The estimated P/B ratio tended to decrease exponentially during abandoned field succession. The estimated P/B ratio in the 5, 10, 20, 50 and 80 years old-field were 0.60, 0.39, 0.19, 0.06 and 0.01, respectively. These results were fairly in accordance with the bioenergetics model during the forest succession projected by Odum(1969). |
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| Ű¿öµå |
| Abandoned field;Biomass;Net primary production;NPP;Old-field;P/B ratio;Shifting cultivation;Succession; |
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Journal of Ecology and Field Biology / v.29, no.3, 2006³â, pp.237-245
Çѱ¹»ýÅÂÇÐȸ
ISSN : 1975-020X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200633242275748)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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