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Çѱ¹»ýÅÂÇÐȸ / v.22, no.5, 1999³â, pp.277-285
µµ½Ã¸²¿¡¼­ Àº¼ö¿ø»ç½Ã³ª¹« ¹ú¸ñ ÈÄ ÃʱâÀÇ ½Ä»ý º¯È­
( Vegetational Changes in the Early Stages after Lumbering of Populus albaglandulosa in Urban Forest )
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To develop a better restoration technique for altering urban planted forest to more natural forest, the changes of flora, vegetation structure and woody plant growth in the early stage after lumbering only Populus albaglandulosa of the tree layer were studied in Chungdam Park, Chungdam-dong, Kangnam-gu, Seoul for two years (from 1997 to 1998). The results were as follow. First, in the year after lumbering, the species changes occurred not in woody plants but in herbs, which increased by 44%. Three species including Viola verecunda disappeared, and 15 species including ruderals such as Metaplexis japonica and introduced species such as Erechtites hieracifolia appeared newly. Second, lumbering caused the coverages of Quercus aliena, Q. mongolica, Q. acutissima and Sorbus alnifolia in the subtree, or shrub layer, to be increased abruptly. The coverage of Lespedeza bicolor was affected by neighboring plants. Third, in the herb layer the coverage of Artemisia keiskeana was conspicuously increased but those of the others were not. Fourth, by ridding the upper layer canopy, Quercus' growth rates were increased highly. Rates of DBH growth of Q. aliena, Q. mongolica and Q. dentata were increased to 53.0%, 22.9% and 8% in the experimental area, and 23.1%, 8.3% and 6.1% in the control area, respectively, during two growing seasons (from May 11, 1997 to October 27, 1998). The ratios of twig biomasses of the previous year to the next year were 100:565 in Q. aliena, 100:197 in Q. mongolica and 100:644 in Q. dentata in the experimental area. There were also growth ratios of 100:117 in Q. aliena, 100:100 in Q. mongolica and 100:42 in Q. dentata in the control area, respectively. The growth rate increases of Q. aliena and Q. dentata were thus conspicuous in twig rather than in trunk, but that of Q. mongolica was vice versa.
 
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The Korean Journal of Ecology / v.22, no.5, 1999³â, pp.277-285
Çѱ¹»ýÅÂÇÐȸ
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911922413190)
¾ð¾î : Çѱ¹¾î
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