함안군 농업지역의 영양염에 대한 물질흐름분석(MFA)

Abstract

The environmental problem of the agro-ecosystem has increased due to excessive input of fertilizer and nutritious material. Therefore, managing the agricultural land by location based system management is required. In this study, material flow analysis(MFA) of nutrients in Haman agricultural area for past 15 years (1995∼2010) has been done. As a result, the average amount of excessive nitrogen in Haman agricultural land was 1,197.08 Ton/year which showed decreasing pattern of 1,589.77 Ton/year in 1995 and 652.27 Ton/year in 2010. In case of phosphorus, the average amount was 637.17 Ton/year which also showed the decreasing patter of 725.56 Ton/year in 1995 and 653.48 Ton by 2010. These decreasing patterns were due to changes in agricultural policies. Even with the decreased amount of excessive amount, there still are a massive amount of excessive nutrient. Excessive nutrient remaining on the agricultural land can accumulate and cause soil pollution or flow out as runoff by precipitation and cause water pollution. Therefore management plan to reduce the excessive use of fertilizer is required.