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Çѱ¹È¯°æ»ýÅÂÇÐȸ / v.20, no.2, 2006³â, pp.235-258
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û°èõ º¹¿ø°ø»ç Àü.Áß.ÈÄÀÇ ¼öÁú°ú ½Ä¹° ¹× ½Ä»ýÀÇ º¯È
( Changes in Water Quality, Flora and Vegetation of Cheonggye Stream Before, During and After its Restoration ) |
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û°èõ º¹¿ø°ø»ç Àü(2003) Áß(2004) ÈÄ(2005)ÀÇ ¼öÁú°ú ½Ä¹° ¹× ½Ä»ý¸ð´ÏÅ͸µ°á°ú û°èõÀÇ ¼öÁúµî±ÞÀº °ø»ç Àü¿¡´Â $BOD_5$°¡ Æò±Õ 51.1mg/L·Î¼ µî±Þ ¿ÜÀ̾úÀ¸³ª, °ø»ç ÈÄ¿¡ ÇѰ¼ö¿Í ÁöÇÏö ¿ª»çÀÇ ¹°ÀÌ °ø±ÞµÇ¸é¼ $BOD_5$°¡ 3.3mg/L·Î ³·¾ÆÁ® ¼öÁúÀÌ 3µî±ÞÀ¸·Î Çâ»óµÇ¾ú´Ù. ½Ä¹°ÀÇ °æ¿ì´Â °ø»ç Àü¿¡ ÃÑ 121Á¾¿¡¼ °ø»çÈÄ¿¡ 132Á¾À¸·Î ´Ù¼Ò Áõ°¡ÇÏ¿´´Ù. ƯÈ÷ ´Ù³âÃÊÀÇ ºñÀ²ÀÌ °ø»ç Àü 24.8%¿¡¼ °ø»ç ÈÄ 35.6%·Î Áõ°¡µÇ¾úÀ¸¸ç, °¥´ë±º¶ô°ú Àܵ𱺶ôÀÌ µµÀԽĻýÀ¸·Î °üÂûµÇ¾ú´Ù. ±×·¯³ª °ø»ç±¸°£Àº °ø»ç Àü ¿ìÁ¡ ±º¶ôÀ̾ú´ø ½Ä»ýº¸Àüµî±Þ 1ÀΠȯ»ïµ¢±¼°ú ¸ÁÃʱº¶ôÀÌ ¿©ÀüÈ÷ ¿ì¼¼ÇÏ¿© ½Ä¹°ÀÇ »ýżºÀº °ø»çÀü°ú ÈÄÀÇ º¯È°¡ Å©Áö ¾Ê¾Ò´Ù. ¶ÇÇÑ ÀÌ °°Àº Á¶»ç³»¿ëÀ» ºñ±³´ë»ó±¸°£°ú ºñ±³ÇÏ¸é ºñ±³´ë»ó±¸°£ÀÇ ¼öÁúÀº $BOD_5$ 0.8mg/LÀÎ 1µî±ÞÀ¸·Î °ø»ç±¸°£º¸´Ù ¾çÈ£Çϰí, ½Ä¹°Á¾¼öµµ 154Á¾À¸·Î °ø»ç±¸°£º¸´Ù ´Ù¾çÇÒ »Ó ¾Æ´Ï¶ó ±ÍȽŰÀÇ ºñÀ²Àº 13%·Î¼ °ø»ç±¸°£ÀÇ 28.8%º¸´Ù ³·¾Ò´Ù. µû¶ó¼ ÇöÀç±îÁö´Â °ø»ç±¸°£ÀÌ ºñ±³´ë»ó±¸°£º¸´Ù »ýÅÂÀûÀ¸·Î ¶³¾îÁö´Â °ÍÀ¸·Î Æò°¡µÈ´Ù. ±×·¯³ª ÇÏõº¹¿øÀ̶õ Àå±âÀûÀÌ¸ç º¹ÇÕÀûÀÎ °úÁ¤À¸·Î¼ º» ¿¬±¸ ¿¡¼¿Í °°Àº ´Ü±âÁ¶»ç¸¸À¸·Î º¹¿øÀÇ È¿°ú¼ºÀ» ³íÇÒ ¼ö ¾øÀ¸¸ç, ¾ÕÀ¸·Î Àå±â°£¿¡ °ÉÄ£ ´Ù¸¥ ÁÖ¿äÇ׸ñ¿¡ ´ëÇÑÁ¶»çµµ º´ÇàµÇ¾î¾ß¸¸ û°èõ º¹¿øÀÇ È¿°ú¼ºÀ» °ËÁõÇÒ ¼ö ÀÖÀ» °ÍÀ̶ó°í »ç·áµÈ´Ù. |
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The monitoring of vegetation and water quality before(2003), during(2004) and after(2005) the restoration work of Cheonggye Stream indicated that $BOD_5$ concentration before the project averaged 51.1mg/L and that both the inflow of water from Hang River and the funnel of subway station water into the stream lowered the $BOD_5$ to 3.3mg/L, improving its water quality to the third grade. Species of plants slightly increased from 121 to 132 after the restoration. Specifically, perennial plant comprised 35.6%, an increase from 24.8% recorded before the restoration. Phragmites communis and Zoysia japonica communities were observed as the introduction vegetation. However, Humulus japonicus and Erigeron canadensis communities, which were classified into the first grade according to the vegetation conservation classification, were found to be still prevailing though they were dominant community before the restoration, meaning that the ecological condition of plants had not changed very significantly. An the other hand the water quality of the reference reach was classified into the first grade based on $BOD_5$, which implies the water quality of the section was better than the project reaches. Besides the section had more diverse plant species which numbered 154, and furthermore, the rate of immigrated plants comprised 13% which was lower than 28.8% recorded by the project sections. The project reaches are considered to be inferior to the reference section in terms of ecological condition. The effectiveness of the stream restoration cannot be determined only by such short-term investigation as was conducted in this study, and it is considered that the effectiveness of the restoration of Cheonggye Stream can be determined only if investigations in other major factors are conducted over the long-term period. |
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Ű¿öµå |
ÇÏõº¹¿ø;ÇÏõº¹¿øÀÇ È¿°ú¼º;±ÍȽŰ;ºñ±³´ë»ó±¸°£;STREAM RESTORATION;EFFECTIVENESS OF STREAM RESTORATION;IMMIGRATED PLANTS;REFERENCE SECTION; |
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Çѱ¹È¯°æ»ýÅÂÇÐȸÁö / v.20, no.2, 2006³â, pp.235-258
Çѱ¹È¯°æ»ýÅÂÇÐȸ
ISSN : 1229-3857
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200633242253644)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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