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KMID : 1024520100190070907
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Journal of the Environmental Sciences
2010 Volume.19 No. 7 p.907 ~ p.915
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Development of Nonpoint Sources Runoff Load Estimation Model Equations for the Vineyard Area
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Yoon Young-Sam
Kwon Hun-Gak
Yi Youn-Jung
Yu Jay-Jung
Lee Jae-Kwan
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Abstract
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Agriculture nonpoint pollution source is a significant contributor to water quality degradation. To establish effective water
quality control policy, environpolitics establishment person must be able to estimate nonpoint source loads to lakes and
streams. To meet this need for orchard area, we investigated a real rainfall runoff phenomena about it. We developed
nonpoint source runoff estimation models for vineyard area that has lots of fertilizer, compost specially between gricultural areas. Data used in nonpoint source estimation model gained from real measuring runoff loads and it surveyed for two years(2008-2009 year) about vineyard. Nonpoint source runoff loads estimation models were composed of using independent variables(rainfall, storm duration time(SDT), antecedent dry weather period(ADWP), total runoff depth(TRD), average storm intensity(ASI), average runoff intensity(ARI)). Rainfall, total runoff depth and average runoff intensity among six independent variables were specially high related to nonpoint source runoff loads such as BOD, COD, TN, TP, TOC and SS. The best regression model to predict nonpoint source runoff load was Model 6 and regression factor of all water quality items except for was R2=0.85.
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KEYWORD
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Nonpoint source, Storm runoff, Pollution Load estimation model
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