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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.35, no.1, 2002³â, pp.28-35
³ó¾÷¿ë Àú¼öÁöÀÇ ¹°¸®Àû ÀÎÀÚ°¡ ¼öÁú¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effects of Physical Parameters on Water Quality in Agricultural Reservoirs )
ÀüÁöÈ«;ÇÔÁ¾È­;±èÈ£ÀÏ;Ȳ¼øÁø;À±Ãá°æ; °Ç±¹´ëÇб³ Áö¿ª°Ç¼³È¯°æ°øÇаú;°Ç±¹´ëÇб³ Áö¿ª°Ç¼³È¯°æ°øÇаú;³ó¾÷±â¹Ý°ø»ç;°Ç±¹´ëÇб³ Áö¿ª°Ç¼³È¯°æ°øÇаú;°Ç±¹´ëÇб³ Áö¿ª°Ç¼³È¯°æ°øÇаú;
 
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The effect of physical parameters on water quality was analyzed using monitoring data of 193 agricultural reservoirs. The retention time of reservoirs ($t_d$) ranged between 10 and 140 days, and the ratio of drainage area (DA) to reservoir surface area (SA) was between 10 and 120. Both ratios of DA/SA and total area (TA)/ reservoir storage (ST) in Korean agricultural reservoirs were relatively greater than those in natural lakes in other countries. As retention time was plotted against DA/SA ratio, it was shorter in Korean reservoirs than natural lakes. The semi-logarithmic relationship between TA/SA and t>$t_d$ was $t_d;=;42.21(TA/ST)^{-1}$ (n = 50, $R^2;=;0.89$). While areal loading of total phosphorus (TP) was below $4;gTP{cdot}m^{-2}{cdot}yr^{-1}$ in general, it exceeded $10;gTP{cdot}m^{-2}{cdot}yr^{-1}$ in reservoirs where DA/SA ratio was greater than 100, which implies that areal loading of TP increases as DA/SA ratio increases. Chl-a concentration was positively related with the mean depth of reservoir, implying the higher Chl-a concentration with deeper the mean depth. Therefore, the deeper reservoir might be advantageous in water quality management perspective if other morphological conditions are similar. The empirical regression equation using physical parameters was also suggested in the estimation of TP concentration in the reservoirs. Combined information presented in this paper might be applicable to the water quality management in agricultural reservoirs.
 
Ű¿öµå
agricultural reservoir;physical parameters;water quality;TP;Chl-a;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.35, no.1, 2002³â, pp.28-35
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200218317179147)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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