Person: ÖZSOY, GÖKHAN
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ÖZSOY
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GÖKHAN
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Publication Estimation of soil erosion risk within an important agricultural sub-watershed in Bursa, Turkey, in relation to rapid urbanization(Springer, 2015-07-01) Özsoy, Gökhan; Aksoy, Ertuğrul; ÖZSOY, GÖKHAN; AKSOY, ERTUĞRUL; Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi ve Bitki Besleme Bölümü; 0000-0002-4421-7936; AAF-5336-2019; AAH-2993-2021This paper integrates the Revised Universal Soil Loss Equation (RUSLE) with a GIS model to investigate the spatial distribution of annual soil loss and identify areas of soil erosion risk in the Uluabat sub-watershed, an important agricultural site in Bursa Province, Turkey. The total soil loss from water erosion was 473,274 Mg year(-1). Accordingly, 60.3 % of the surveyed area was classified into a very low erosion risk class while 25.7 % was found to be in high and severe erosion risk classes. Soil loss had a close relationship with land use and topography. The most severe erosion risk typically occurs on ridges and steep slopes where agriculture, degraded forest, and shrubs are the main land uses and cover types. Another goal of this study was to use GIS to reveal the multi-year urbanization status caused by rapid urbanization that constitutes another soil erosion risk in this area. Urbanization has increased by 57.7 % and the most areal change was determined in class I lands at a rate of 80 % over 25 years. Urbanization was identified as one of the causes of excessive soil loss in the study area.Publication GIS mapping of biogas potential from animal wastes in Bursa, Turkey(Chinese Acad Agricultural Engineering, 2015-02-01) Özsoy, Gökhan; Alibaş, İlknur; ÖZSOY, GÖKHAN; ALİBAŞ, İLKNUR; Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi ve Bitki Besleme Bölümü; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü; 0000-0002-4421-7936; 0000-0002-1898-8390; AAF-5336-2019; AAH-4263-2021This paper introduces biogas potential of animal waste in Bursa, an important agricultural, industrial and tourism centre in northwest Turkey. This research has focused on Bursa's biogas potential from animal wastes. The potential quantity of electric energy, the potential amount of biogas as well as potential bio-electric energy per capita to be obtained from animal wastes were studied. If the evaluation of biogas potential is conducted thoroughly, 1.12% of the electricity consumption of Bursa can be met with the conversion of biogas from animal wastes into electricity. This study also revealed that the power for 95% of street lighting, approximately twofold of the electricity consumed in official apartments and all of the agricultural irrigation operations can be provided with electrical energy obtained from biogas obtained from animal wastes in Bursa. In addition, the research efficiency was improved by creating thematic maps in GIS, which enabled differences in data among the districts to be observed more clearly.Publication Determination of pollution status of Nilufer river by water and bottom sediment analysis(IWA Publishing, 2023-01-17) Aşık, Barış Bülent; Özsoy, Gökhan; AŞIK, BARIŞ BÜLENT; ÖZSOY, GÖKHAN; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi ve Bitki Besleme Bölümü; HNN-0428-2023; CDX-0906-2022This study aims to evaluate the Nilufer river in terms of water quality standards. Bottom sediment and water samples were taken from six different locations. The analysis of the physicochemical parameters of water compared with FAO for irrigation water quality standards. In addition, the SAR (sodium adsorption ratio), % Na, MAR (magnesium adsorption ratio), RSC (residual sodium carbonate), KR (Kelley's ratio) and % PI (permeability index) parameters were evaluated in water samples. The bottom sediment pollution situation was evaluated in terms of pollution index such as TEC (threshold effect concentration) and PEC (probable effect concentration). According to the results of the study, the irrigation water classes of the samples were determined as C2S1 and C3S1. Especially, sample sites S4, S5 and S6 were not suitable for irrigation in terms of RSC, KR. The bottom sediment exceeded the TEC and PEC limit values in terms of Zn, Cu, Cr and Ni contents. This may cause adverse effects on the majority of sediment-dwelling organisms.The use of alternative water sources should be preferred. The river can be used for irrigation with precaution but extensive treatment is required before use for irrigation purposes to prevent adverse public health effects.