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Transport of nutrıents to Marmara sea by surface water sources of Tekirdağ and the economic loss caused by thıs

Trakya Bölgesi, birim alana fazla miktarda gübre kullanılan bir bölgedir. Toprağa uygulanan gübreler, drene olarak veya erozyon yoluyla nehirlere, yeraltı sularına ve sonunda Marmara Denizine ulaşmaktadır, yeraltı suları içilemez ve pek çok nehir kullanılamaz durumdadır. Bu araştırmada, bazı kirleticilerin incelenen derelerdeki mevsimsel dağılımları ve ekonomik kayıplar analiz edilmiştir. Aylık olarak örneklenen, dere sularında, nitrat azotu ve toplam fosfor derişimlerinin eşdeğeri olan kimyasal gübre formları ve bu gübrelerin ekonomik kayıp miktarları hesaplanmıştır. Araştırmadan elde edilen sonuçlara göre, toplam 368.4 mg l-1 nitrat azotu ve 328.4 mg l-1 toplam fosfor, araştırma alanından Marmara Denizine taşınmıştır. Bu derişimlerin eşdeğeri olan kimyasal gübre formu miktarları ise, toplam 6810.2 ton NH4NO3 yıl-1 ve 5528.9 ton TSP yıl-1 olarak hesaplanmıştır.

Tekirdağ yüzeysel su kaynakları ile Marmara Denizi'ne nutrient taşınımı ve bu yolla oluşan Ekonomik kayıplar

The region of Trakya is a place where excessive amount of fertilizer per unit area is used. Since fertilizers applied to the soil reach, either by draining or by erosion, the rivers, the ground water and finally the Sea of Marmara the ground water and most of the river waters are neither drinkable nor usable. In this study, seasonal distributions of certain pollutants in the streams and the economic losses were analyzed. The nitrate nitrogen and total phosphorus equivalent concentrations of chemical fertilizers and the economic losses for such fertilizers were calculated for the streams sampled monthly. According to the results of the study, a total of 368.4 mg l-1 nitrate nitrogen and 328.4 mg l-1 total phosphorus were carried from the study area to Marmara Sea. The chemical fertilizer quantities equivalent to those concentrations in total were 6810.2 ton NH4NO3 year-1 and 5528.9 ton TSP year-1.

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