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Çѱ¹È¯°æ»ýÅÂÇÐȸ / v.23, no.4, 2009³â, pp.353-364
ȲÆó°è·ùÀÇ »ç¹æ°øÀÛ¹° ½Ã°ø¿¡ µû¸¥ Àú¼­¼º ´ëÇü¹«Ã´Ãßµ¿¹°»óÀÇ º¯È­ - ½Ã°ø Á÷ÈÄÀÇ º¯È­¸¦ Áß½ÉÀ¸·Î -
( The Variation of Benthic Macroinvertebrates Caused by Erosion Control Works in a Torrential Stream - Focused on Variation of Benthic Macroinvertebrates Analyzed immediately after Construction Works - )
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This study was conducted to evaluate the effect of erosion control works on the stream ecosystem in a mountain torrential stream. The species composition of benthic macroinvertebrates and biological water quality were investigated before and after construction of erosion control works at 5 sites. The total number of benthic macroinvertebrates before construction was 3,086 individuals including 4 phyla, 6 classes, 11 orders, 22 families, and 25 species, but after construction it has decreased to 1,208 individuals including 4 phyla, 6 classes, 10 orders, 17 families, and 19 species. Especially, the diversity, richness, and evenness indices, which were calculated based on existing number of biological species, have decreased or not produced at the erosion control sites, where biological species were not found or the minimum number of species were found. The results of community analysis of benthic macroinvertebrates and ESB(Ecological Score of Benthic macroinvertebrate community) indicated that the environmental qualities of the stream based on saprobity, environmental condition, and water quality decreased after the construction at all sites: before construction, the top of the stream was satisfactory and some satisfactory, the middle was some defectiveness, and the lower was defectiveness and very defectiveness; after construction, all parts of the stream except some parts of the top were very defectiveness. Moreover, the water quality of torrential stream was rated between I to III before construction, but after construction, it declined to $IV{sim}V$ except control. The habitat damage of benthic macro invertebrates occurred at all investigation sites after the construction of erosion control works led to reduction of the number of biological species and water quality deterioration. The results reported in this study were collected directly after the construction of erosion control works. Therefore, additional studies are needed to further explore the effect of disaster-prevention of erosion control works and the recovery process of stream ecosystem through long term monitoring.
 
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»êÁöȲÆó°è·ù;»ç¹æ»ç¾÷;Àú¼­»ý¹°;¼öÁúºÐ¼®;°è°î»ýÅÂȯ°æ;MOUNTAINOUS TORRENTIAL STREAM;EROSION CONTROL WORK;BENTHOS;WATER ANALYSIS;STREAM ECOSYSTEM;
 
Çѱ¹È¯°æ»ýÅÂÇÐȸÁö / v.23, no.4, 2009³â, pp.353-364
Çѱ¹È¯°æ»ýÅÂÇÐȸ
ISSN : 1229-3857
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200933063797705)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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