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    A GIS-based land evaluation model for peach cultivation by using AHP: a case study in NW Turkey
    (Springer, 2022) Everest, Timucin; Gur, Engin
    Crop-based land suitability studies constitute an important component of precision and sustainable agricultural practices. In this study, a model was created to determine suitable lands for peach farming with the use of the analytic hierarchy process (AHP). The land suitability model was carried out in Derekolu region of Bayramic town of canakkale province. Within the scope of the study, a total of 12 parameters, namely soil depth, soil texture, EC, pH, organic matter content, CaCO3 content, nitrogen, phosphorus, potassium, elevation, aspect, and slope, were used. Present assessments revealed that of the assessed lands, 367.50 ha was highly suitable, 7085.25 ha moderately suitable, 6341.25 ha marginally suitable, and 378.50 ha not suitable for peach cultivation. Texture, slope, and CaCO3 content were respectively identified as the most effective factors in peach cultivation. The combined use of AHP and GIS techniques in the identification of suitable lands for peach farming facilitated assessments and provided significant advantages in terms of time and economic aspects. Further research is recommended to test the validity of the present model for different geographies under different climate and soil conditions.
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    Applying multivariate statistics for identification of groundwater resources and qualities in NW Turkey
    (Springer, 2019) Everest, Timucin; Ozcan, Hasan
    This study, performed in Canakkale-Ezine in NW of Turkey, analyzes the physicochemical properties of 37 groundwater wells. These 37 wells were chosen to represent each geological unit in the study area. The main purpose of the study and its contribution to the literature is to produce information about the resources and availability of groundwater by using multivariate statistical methods and lithology. For determination hydrochemical facies of groundwater, Piper trilinear diagram was used. Gibbs diagram was applied for determining the mechanism of groundwater chemistry and diagram showed that the interaction of rock-water is more dominant in the study area. Multivariate statistics were applied to physicochemical properties for identification origins of waters. According to the Piper diagram, 16 of the wells were identified as Ca-HCO3 type, 13 of them as Ca-Cl type, 5 of them as mixed Ca-Mg-Cl type, 2 of them as Na-Cl type, and 1 as Ca-Na-HCO3 type. In the study with the purpose of determining the resources of groundwater, the physicochemical properties of the wells are analyzed with hierarchical cluster (HCA) and non-hierarchical cluster (K-means) methods, and the resources are associated with the lithology based on these methods. A total of 37 wells are divided into five different clusters through the HCA method. Further, for the interpretation of the resources of the groundwater, the facies of the waters on the Piper diagram are evaluated based on the five clusters generated through the HCA method and on the lithology. In the study, the results obtained from the K-means method are not significant and in line with the lithology for the interpretation of the resources of the groundwater. In conclusion, this study with limited dataset reveals that using HCA method is very effective to identify the origins of groundwater and present the association with lithology.
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    Ecological risk assessment for protected areas: Case of Troia Historical National Park, Canakkale - Turkey
    (Parlar Scientific Publications, 2017) Everest, Timucin; Tasli, Tulay Cengiz; Akbulak, Cengiz; Sungur, Ali
    An ecological risk assessment of the Troia Historical National Park (THNP), which is under protected status and has an important and fragile ecosystem, was carried out in this research study. The effects of available practices in THNP on soil potential, water potential, and biotope potential, which were determined as ecological potentials, were investigated in the study. The usability of potentials, the intensity of the negative effects on these potentials, and their susceptibility to these negative effects were determined, and ecologically at-risk areas were analyzed by correlating these variables. The findings showed that most adversely affected and at the highest risk were the soil potential, biotope potential, and water potential, respectively. The area at the highest risk of all the researched potentials was revealed to be the salt marshes, located in the north of the research area and considered as an ecologically vulnerable area. © by PSP.
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    ECOLOGICAL RISK ASSESSMENT FOR PROTECTED AREAS: CASE OF TROIA HISTORICAL NATIONAL PARK, CANAKKALE - TURKEY
    (Parlar Scientific Publications (P S P), 2017) Everest, Timucin; Tasli, Tulay Cengiz; Akbulak, Cengiz; Sungur, Ali
    An ecological risk assessment of the Troia Historical National Park (THNP), which is under protected status and has an important and fragile ecosystem, was carried out in this research study. The effects of available practices in THNP on soil potential, water potential, and biotope potential, which were determined as ecological potentials, were investigated in the study. The usability of potentials, the intensity of the negative effects on these potentials, and their susceptibility to these negative effects were determined, and ecologically at-risk areas were analyzed by correlating these variables. The findings showed that most adversely affected and at the highest risk were the soil potential, biotope potential, and water potential, respectively. The area at the highest risk of all the researched potentials was revealed to be the salt marshes, located in the north of the research area and considered as an ecologically vulnerable area.
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    Impact of urbanization on soil loss: a case study from sod production
    (Springer, 2020) Parlak, Mehmet; Everest, Timucin; Ruis, Sabrina J.; Blanco, Humberto
    The rapidly increasing population of urban centers leads to the increasing need for greenspaces. Sodding of turfgrass provides instant greenspace, but it removes soil from sod farms. The extent of such removal has not been widely quantified. The amount quantity of soil and organic matter lost with sod harvest and the associated cost of nutrients lost from six sod farms in the Marmara region of Turkey were determined. Soil loss ranged from 166 to 243 Mg ha(-1)year(-1), while the associated organic matter loss ranged from 1 to 6 Mg ha(-1)year(-1). The amount of soil loss increased with increases in gravimetric water, clay, and silt contents, and duration under sod harvest, while it decreased with an increase in sand content. Annual nutrient lost ranged from 117 to 449 kg ha(-1)for N, from 2 to 18 kg ha(-1)for P2O5, and from 21 to 175 kg ha(-1)for K2O. Replacing the nutrient lost would cost about $134 ha(-1)year(-1)for sandy soils and $444 ha(-1)year(-1)for fine-textured soils. Soil lost with sod harvest was 134 times higher than that from agricultural lands by erosion in the region, although the area under sod production is much smaller than that under croplands. Similarly, organic matter loss was 4 to 5 times higher than the accumulation rate under established turfgrass in golf courses and lawns in locations with similar climate. Overall, sod harvesting results in significant and costly soil, organic matter, and nutrient loss, which, although small in area, can be an important component of total soil erosion.
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    PRIORITIZATION OF KARAMENDERES BASIN'S GROUNDWATER POTENTIAL WITH MORPHOMETRIC ANALYSES (IN SEMI-ARID CLIMATIC CONDITIONS CANAKKALE, TURKEY)
    (Parlar Scientific Publications (P S P), 2018) Everest, Timucin
    This study was conducted in Karamenderes Basin (KMB), Canakkale-NW Turkey. Possible storage areas of groundwater in the basin were prioritized by using morphometric data, digital elevation model (DEM), topographic maps, geological maps, satellite image, and geographic information systems (GIS). Six sub-basins were identified as a result of the interpretation of all the cartographic materials. After the calculations which made for the all sub-basins it was determined that which sub-basins have the highest potential to storage the groundwater. Sub-basins compared with each other. According to these data, (SubW-3) and (SubW-2) having geological impermeable lithology and more hard rocks, low bifurcation ration (Br), high drainage density (Dd) and stream frequency (Fs) were identified to have the lowest repository potential for groundwater. On the contrary, (SubW-4) and (SubW-1), which have higher drainage density (Dd) and stream frequency (Fs) and lower bifurcation ratio (Br), generally formed on quaternary alluvium, clastic limestone and marl, have a higher potential for storing groundwater. CORINE land cover map showed that areas which have higher groundwater storage potential under agricultural usages.
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    Soil losses due to leek and groundnut root crop harvesting: An unstudied regional problem in Turkey
    (Wiley, 2022) Parlak, Mehmet; Everest, Timucin; Tuncay, Tulay; Caballero-Calvo, Andres; Rodrigo-Comino, Jesus
    Soil loss from root crops is an increasingly significant problem studied for some species, such as potatoes, sugar beets, carrots, celery, and onions. It reduces soil fertility and, subsequently, soil productivity. For leek (Allium porrum) and groundnut (Arachis hypogaea), however, there is little information to date. More research on this topic could help farmers reduce the process of soil degradation. In some countries, such as Turkey, the production of these crops is perennial to supporting rural communities and ensuring food security. Therefore, it is important to quantify soil losses from leek and groundnut crops in Turkey. This study investigated the factors affecting soil losses and the cost of nutrients lost with the transported soil by analyzing randomly selected plants from 45 harvested leek and groundnut plots. Our results showed that soil losses reached 3.99 Mg ha(-1) per harvest for leek and 1.04 Mg ha(-1) for groundnut. Prevailing soil moisture explained 59% of the variability in the leek harvest and soil texture and bulk density for leek yield at harvest. In the groundnut harvest, 53% of the variability was explained by antecedent soil moisture and clay fraction for the groundnut yield at the time of harvest. The estimated annual cost of nutrients losses was $US 3.75 ha(-1) for leek and $US 0.76 ha(-1) for groundnut. It can be concluded that leek and groundnut harvesting causes soil and nutrient losses with considerable economic costs. Therefore, awareness should be raised among farmers and users. In addition, policymakers should consider the management of soil loss by crop harvesting (SLCH) processes.