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Çѱ¹¼öÀÚ¿øÇÐȸ / v.41, no.2, 2008³â, pp.149-162
´ëû´ï À¯¿ª Åä¾ç ħ½Ä·® »êÁ¤À» À§ÇÑ SWAT ¸ðµ¨ÀÇ Àû¿ë
( Application of SWAT for the Estimation of Soil Loss in the Daecheong Dam Basin )
¿¹·É;À±¼º¿Ï;Á¤¼¼¿õ; ÃæºÏ´ëÇб³ ȯ°æ°øÇаú;±¹¸³È¯°æ°úÇпø ±Ý°­¹°È¯°æ¿¬±¸¼Ò ¿ø±¸¿ø;ÃæºÏ´ëÇб³ ȯ°æ°øÇаú;
 
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¹Ì±¹³ó¹«¼º¿¡¼­ Åä¾ç°ú ÅäÁöÀÌ¿ë Æ¯¼ºÀ» °í·ÁÇÑ ´ë±Ô¸ð À¯¿ªÀÇ À¯ÃâÇØ¼®°ú Åä¾çħ½Ä·® ¹× ºñÁ¡¿À¿°¿ø ºÎÇϸ¦ ÇØ¼®Çϱâ À§ÇØ °³¹ßÇÑ SWAT ¸ðµ¨À» ´ëû´ï À¯¿ª¿¡ Àû¿ëÇÏ¿© ÅäÁöÀÌ¿ë Æ¯¼ºº° Åä¾çħ½Ä·®À» »êÁ¤ÇÏ¿´´Ù. ¿¬±¸°á°ú´Â Àú¼öÁö°ü¸®ÀÚ¿Í Á¤Ã¥ÀÔ¾ÈÀڵ鿡°Ô Àú¼öÁö ʼö¹®Á¦¸¦ ¿ÏÈ­Çϱâ À§ÇÑ À¯¿ª°ü¸® ´ë¾ÈÀÇ È¿À²¼ºÀ» Æò°¡Çϴµ¥ Áß¿äÇÑ Á¤º¸¸¦ Á¦°øÇÑ´Ù. À¯Ãâ°ú Åä¾ç À¯½Ç·® »êÁ¤¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ÁÖ¿äÇÑ ¸Å°³º¯¼öµéÀ» º¸Á¤ÇÑ ÈÄ, ¸ðµ¨Àº ½ÇÃø ¿¬°£ À¯Ã⼺ºÐ°ú ¿ùº° À¯È²º¯È­¸¦ ºñ±³Àû Àß ¿¹ÃøÇÏ¿´´Ù. ¸ðÀǰá°ú, ÅäÁö À̿뺰 ´ÜÀ§¸éÀû´ç Åä¾çħ½Ä·®Àº ¹çÀÌ 33.1 ton/ha/yr·Î °¡Àå ¸¹¾ÒÀ¸¸ç, ÀӾߴ ¼ö¸ñÀÇ Á¾·ù¿¡ µû¶ó $2.3{sim}5.4ton/ha/yr$, µµ½ÃÁö¿ª 1.0 ton/ha/yr, ³í 0.1 ton/ha/yrÀÇ ¼øÀ¸·Î ³ªÅ¸³µ´Ù. ÅäÁöÀÌ¿ë¸éÀû °¡Áß ¿¬°£ Åä¾çħ½Ä·® »êÁ¤°á°ú, ¹çÀº À¯¿ªÀüü ¸éÀû¿¡¼­ Â÷ÁöÇÏ´Â ºñÀ²ÀÌ ´ÜÁö 10% Á¤µµ¿¡ ÇØ´çÇÏÁö¸¸ ¿¬°£ ÃÑ Åä¾çħ½Ä·®ÀÇ 55.3%¸¦ Â÷ÁöÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ºñ·Ï º» ¿¬±¸¿¡¼­ Àû¿ëÇÑ Åä¾çħ½Ä·® »êÁ¤ ¹æ¹ý¿¡ ³óÀÛ¹°ÀÇ Á¾·ù¿Í °æÀÛÇüÅ¿¡ ´ëÇÑ ±¸Ã¼ÀûÀÎ Á¤º¸¸¦ Æ÷ÇÔÇÏÁö ¸øÇÏ´Â ºÒÈ®½Ç¼ºÀÌ ³»ÀçµÇ¾î ÀÖÀ¸³ª, ¿¬±¸°á°ú´Â ÃÖ¼ÒÇÑ Àú¼öÁöÀÇ Å¹¼ö¹®Á¦¸¦ ¿ÏÈ­Çϱâ À§Çؼ­´Â »ó·ù À¯¿ªÀÇ Åä¾çħ½Ä Á¶Àý´ëÃ¥ÀÌ ÇÊ¿äÇÔÀ» ½Ã»çÇϸç, À¯¿ªÀÇ Á¡À¯À²¿¡ ºñÇØ Åä¾çħ½Ä¿¡ ±â¿©µµ°¡ °¡Àå Å« ¹ç³ó»ç Áö¿ª¿¡ ´ëÇÑ Åä¾çħ½Ä ¾ïÁ¦ ´ëÃ¥À» ¿ì¼± ½Ç½ÃÇÏ´Â °ÍÀÌ °¡Àå È¿À²ÀûÀÏ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
The Soil and Water Assessment Tool (SWAT) developed by the USDA-Agricultural Research Service for the prediction of land management impact on water, sediment, and agricultural chemical yields in a large-scale basin was applied to Daecheong Reservoir basin to estimate the amount of soil losses from different land uses. The research outcomes provide important indications for reservoir managers and policy makers to search alternative watershed management practices for the mitigation of reservoir turbidity flow problems. After calibrations of key model parameters, SWAT showed fairly good performance by adequately simulating observed annual runoff components and replicating the monthly flow regimes in the basin. The specific soil losses from agricultural farm field, forest, urban area, and paddy field were 33.1, $2.3{sim}5.4$ depending on the tree types, 1.0, and 0.1 tons/ha/yr, respectively in 2004. It was noticed that about 55.3% of the total annual soil loss is caused by agricultural activities although agricultural land occupies only 10% in the basin. Although the soil erosion assessment approach adopted in this study has some extent of uncertainties due to the lack of detailed information on crop types and management activities, the results at least imply that soil erosion control practices for the vulnerable agricultural farm lands can be one of the most effective alternatives to reduce the impact of turbidity flow in the river basin system.
 
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Åä¾çħ½Ä;Àú¼öÁö ʼö;ÅäÁöÀÌ¿ë;SWAT;Soil erosion;Reservoir turbidity;Land uses;MUSLE;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.41, no.2, 2008³â, pp.149-162
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200807341722408)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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