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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.43, no.2, 2010³â, pp.319-337
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( Interannual and Seasonal Variations of Water Quality in Terms of Size Dimension on Multi-Purpose Korean Dam Reservoirs Along with the Characteristics of Longitudinal Gradients ) |
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| º» ¿¬±¸´Â ¿ì¸®³ª¶ó ÀΰøÈ£µé¿¡¼ ¿¬º° °èÀýº° ¼öÁúº¯ÀÌ Æ¯¼º ¹× »ó ÇÏ·ù °£ ¼öÁúÀÇ Á¾Àû±¸¹è Ư¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇØ 2003~2007³âÀÇ ÀÚ·á(¹°È¯°æÁ¤º¸½Ã½ºÅÛ)ÀÇ ¿ùº°, ¿¬º°, °ø°£º°(À¯¼ö´ë, ÀüÀÌ´ë, Á¤¼ö´ë)ÀÇ ¼öÁúÀڷḦ ºñ±³ Æò°¡ÇÏ¿´´Ù. 10°³ÀÇ ¹°¸®Àû, ÈÇÐÀû, »ý¹°Àû ¼öÁú º¯¼ö¸¦ ÀÌ¿ëÇÏ¿´À¸¸ç, ÀΰøÈ£µéÀÇ ÀÏ¹Ý ¼öÁú Ư¼º, ¼ö¸®¼ö¹®ÇÐÀû ¼öÁú Ư¼º, ½Ã°£Àû ¼öÁúº¯ÀÌ Æ¯¼º, °ø°£Àû ¼öÁú º¯ÀÌ Æ¯¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. Àú¼ö¸éÀû, À¯¿ª¸éÀû, À¯ÀÔ·®, ¹æ·ù·®À» ±âÁØÀ¸·Î 9°³ÀÇ ÀΰøÈ£¿¡ ´ëÇÏ¿© À¯»çµµ ºÐ¼®À» ½Ç½ÃÇÏ¿´À¸¸ç, ±× °á°ú ´ëÇüÀΰøÈ£(ÃæÁÖÈ£, ´ëûȣ, ¼Ò¾çÈ£), ÁßÇüÀΰøÈ£(¾Èµ¿È£, ¿ë´ãÈ£, ÁÖ¾ÏÈ£, ÇÕõȣ), ¼ÒÇüÀΰøÈ£(Ⱦ¼ºÈ£, ºÎ¾ÈÈ£)·Î Å©°Ô 3°³ ±×·ìÀ¸·Î ³ª´©¾îÁ³°í, À¯¿ª Å©±âº°·Î ºñ½ÁÇÑ ¼öÁú ¾ç»óÀ» ³ªÅ¸³Â´Ù. È«¼öÀÇ ÇØ(2003³â)¿Í °¡¹³ÀÇ ÇØ(2005³â)·Î ´ëº°ÇÏ¿© ¼öÁú ÀڷḦ ºÐ¼®ÇÑ °á°ú, pH, DO, BOD, SS, TN, TP, CHL, EC´Â Rz¿¡¼ LzÀ¸·Î °¥¼ö·Ï °ªÀÌ °¨¼ÒÇÏ¿´°í, SD´Â LZÀ¸·Î °¥¼ö·Ï °ªÀÌ Áõ°¡ÇÏ¿´´Ù. ÀÌ·¯ÇÑ °á°ú´Â ÀΰøÈ£³»ÀÇ ¿µ¾ç¹°Áú°ú ºÎÀ¯¹°ÁúÀÇ Ä§°ÀÛ¿ë ¹× ±¤Á¦ÇÑÀ¸·Î ÀÎÇÑ CHLÀÇ °¨¼Ò°¡ SD °ªÀÇ Áõ°¡¿¡ ¿µÇâÀ» ¹ÌÄ£ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. °¢ ÁöÁ¡º° pH, DO, SS, SD, EC´Â °¡¹³ÀÇ ÇØÀÎ 2005³â¿¡ Äǰí, BOD, COD, TN, TP, CHLÀº È«¼öÀÇ ÇØÀÎ 2003³â¿¡ ³ô°Ô ³ªÅ¸³µ´Ù. °ø°£ÀûÀÎ ¼öÁúºÐÆ÷ Ư¼ºÀ» ºÐ¼®Çϱâ À§ÇÏ¿© 9°³ ÀΰøÈ£ÀÇ Rz, Tz, Lz¿¡¼ÀÇ TN, TP, CHL, SDÀÇ ¼öÄ¡¸¦ ºñ±³ÇÏ¿´´Ù. ±× °á°ú, TN, TP, CHLÀº Rz¿¡¼ LzÀ¸·Î °¥¼ö·Ï ħ°ÀÛ¿ë¿¡ ÀÇÇØ ±× °ªÀÌ °¨¼ÒÇÏ¿´°í, SD´Â ¹Ý´ë ¾ç»óÀ» º¸¿´´Ù. TN°ú TP »çÀÌ¿¡¼ »ó°ü °ü°è¸¦ ºÐ¼®ÇÑ °á°ú, µÎ ¼öÁú º¯¼ö »çÀÌÀÇ »ó°ü¼ºÀº À¯ÀÇÇÏÁö ¾ÊÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ´ëÇü ÀΰøÈ£ÀÇ CHL-SD ¸ðµ¨¿¡¼ Rz, LzÀÇ °æ¿ì¸¦ Á¦¿ÜÇϰí, TP-CHL, CHL-SD´Â À¯ÀÇÇÑ »ó°ü¼ºÀÌ ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, TP-CHLÀÇ »ó°ü°ü°è´Â ÁßÇüÀΰøÈ£ÀÇ Rz ($R^2$=0.2401, p<0.0001, N=239)¿¡¼ À¯ÀÇÇÑ »ó°ü¼ºÀ» º¸ÀÌ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. CHL-SDÀÇ »ó°ü°ü°è¿¡¼µµ ÁßÇüÀΰøÈ£°¡ °¡Àå ³ô°Ô ³ªÅ¸³µÀ¸³ª TP-CHLÀÇ »ó°ü°ü°è¿Í´Â ¹Ý´ëµÇ´Â ¿ª»ó°ü °ü°è¸¦ ³ªÅ¸³Â´Ù. ´ëûȣ, ¾Èµ¿È£, Ⱦ¼ºÈ£¸¦ Rz, Tz, Lz¿¡¼ ¼öÁúÀڷḦ ºÐ¼®ÇÑ °á°ú, ´ëûȣ¿¡¼ ¼öÁúÀÚ·áÀÇ °ªÀÌ ±¸°£º°·Î Å« º¯À̼ºÀ» º¸ÀÌ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Âµ¥, ÀÌ´Â ´ëûȣ°¡ ´ëÇüÀΰøÈ£·Î¼ ±¸°£ °£ °Å¸®°¡ ¸Ö°í, ¼ö½ÉÀÌ ±í¾î Rz, Tz, LzÀÇ ±¸°£ °£ Ư¼ºÀÌ ¶Ñ·ÇÇÏ°Ô ±¸ºÐµÈ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. |
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| Major objective of this study was to determine interannual and seasonal water quality along with characteristics of longitudinal gradients along the reservoir axis of the riverine zone (Rz)-to-lacustrine zone (Lz). Water quality dataset of five years during 2003~2007 used here were obtained from Ministry of Environment, Korea and ten physical, chemical and biological parameters were analyzed in the study. Similarity analysis, based on moropho-hydrological variables of reservoir surface area, watershed area, total inflow, and outflow, showed that the reservoirs were categorized as three groups of large-dam reservoirs (Chungju Reservoir, Daecheong Reservoir and Soyang Reservoir), mid-size reservoirs (Andong Reservoir, Yongdam Reservoir, Juam Reservoir and Hapcheon Reservoir), and small-size reservoirs (Hoengseong Reservoir and Buan Reservoir). According to the data comparison of high-flow year (2003) vs. lowflow year (2005), dissolved oxygen (DO), pH, biological oxygen demand (BOD), suspended solids (SS), total nitrogen (TN), total phosphorus (TP), chlorophyll-a (CHL) and electrical conductivity (EC) declined along the longitudinal axis of Rz to Lz and water transparency, based on Secchi depth (SD), increased along the axis. These results indicate that transparency was a function of Values of pH, DO, SS, SD, and EC at each site were greater in the low-flow year (2005) than the high-flow year (2003), whereas values of BOD, COD, TN, TP and CHL were greater in the high-flow year (2003). When values of TN, TP, CHL and SD in nine reservoirs were compared in the three zones of Rz, Tz, and Lz, values of TN, TP and CHL declined along longitudinal gradients and SD showed the opposite due to the sedimentation processes from the water column. Values of TN were not statistically correlated with TP values. The empirical linear models of TP-CHL and CHL-SD showed significant (p<0.05, $R^2$>0.04). In the mid-size reservoirs, the variation of CHL was explained ($R^2$=0.2401, p<0.0001, n=239) by the variation of TP. The affinities in the correlation analysis of mid-size reservoirs were greater in the CHL-SD model than any other empirical models, and the CHL-SD model had an inverse relations. In the meantime, water quality variations was evidently greater in Daecheong Reservoir than two reservoirs of Andong Reservoir and Hoengseong Reservoir as a result of large differences of water quality by long distance among Rz, Tz and Lz. |
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| Korean dam reservoir;water quality;longitudinal gradient;nutrient; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.43, no.2, 2010³â, pp.319-337
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201030853091289)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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