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Çѱ¹»ýÅÂÇÐȸ / v.17, no.3, 1994³â, pp.311-318
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Ä¡ÈȻ縷¿¡¼ »Ñ¸®ÀÇ ºÐÇØ°úÁ¤¿¡ µû¸¥ Áú¼ÒÇÔ·®ÀÇ º¯È
( Changes of Mass Loss and Nitrogen Content during Root Decomposition in the Chihuahuan Desert ) |
| ¹®ÇüÅÂ;; °øÁÖ´ëÇб³ ÀÚ¿¬°úÇдëÇÐ »ý¹°Çаú;´º¸ß½ÃÄÚ ÁÖ¸³´ëÇÐ »ý¹°Çаú;
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| Ä¡ÈÈ »ç¸·¿¡¼ ¸î °¡Áö ½Ä¹° »Ñ¸®ÀÇ ºÐÇØÀ²°ú ºÐÇØ °úÁ¤¿¡ µû¸¥ Áú¼ÒÇÔ·®ÀÇ º¯È¸¦ Á¶»çÇÏ¿´´Ù (1986³â 10¿ù ~ 1990³â 4¿ù). »Ñ¸®ÀÇ ºÐÇØ´Â ¸®±×´Ñ ÇÔ·®°ú ¿ª»ó°ü °ü°è¸¦ º¸¿´´Ù(r=-0.84, n=5, p<0.05). 1³â»ý ±¤¿±Ãʺ»ÀÎ Baileya multiradiataÀÇ ºÐÇØÀ²ÀÌ °¡Àå ³ô¾Ò°í ´Ù³â»ý Çù¿± Ãʺ»ÀÎ Panicum obtusumÀÇ ºÐÇØÀ²ÀÌ °¡Àå ³·¾Ò´Ù. Áö¿ª¿¡ µû¸¥ ºÐÇØÀ²Àº playa¿¡¼ °¡Àå ³·¾Ò´Ù. Baileya multiradiata¸¦ Á¦¿ÜÇÏ°í ¸ðµÎ ºÐÇØ Ãʱ⿡ Áú¼ÒÀÇ ¹«±âȰ¡ ÀÖÀº ´ÙÀ½ Áú¼ÒÀÇ ºÎµ¿È°¡ ³ªÅ¸³µ´Ù. Baileya multirdiataÀÇ »Ñ¸®´Â ºÐÇØ ÃʱâºÎÅÍ Áú¼ÒÇÔ·®ÀÌ °è¼Ó Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ´Ù³â»ý Çù¿±Ãʺ» »Ñ¸®ÀÇ ¸®±×´Ñ ÇÔ·®Àº ±¤¿±Ãʺ» »Ñ¸®ÀÇ ¸®±×´Ñ ÇÔ·®º¸´Ù ³ô¾Ò´Ù. |
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| We examined spatial and temporal patterns of root decomposition for three and half years, from October 1986 to April 1990, in semi-arid Chihuahuan Desert. Decomposition of roots occurred in a two-phased pattern: an early period of rapid mass loss followed by a period of slower loss. The rate of root decomposition had a high negative correlation with the initial lignin concentration in roots (r=-0.84, p<0.05). Annual mass loss rate of Baileya multiradiata, a herbaceous annual, was the highest with the value of 0.60, while that of Panicum obtusum. a perennial grass which was restricted to playa, was the lowest with 0.13. The mass loss rate of roots in the playa was the lowest among the vegetation zones along the transect. After 42 months elapsed, fluffgrass roots in playa lost 40% of the initial mass, while in other sites it lost on average 55% of the initial mass. In all roots except for desert marigold, there was an initial release of nitrogen early in decomposition followed by net nitrogen immobilization. Nitrogen concentration of the desert marigold roots showed linear increase from the beginning. Lignin concentration of perennial grass roots were higher than those of herbaceous annual and woody perennial root. |
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| Ű¿öµå |
| Baileya multiradiata;Bouteloua eriopoda;Decomposition rate;Erioneuron pulchellum;Long-term decomposition;Panicum obtusum;Xanthocephallum sarothrae; |
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The Korean Journal of Ecology / v.17, no.3, 1994³â, pp.311-318
Çѱ¹»ýÅÂÇÐȸ
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411919966319)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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