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            <front>

                <journal-meta>
                                                                <journal-id>anajas</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Anadolu Tarım Bilimleri Dergisi</journal-title>
            </journal-title-group>
                            <issn pub-type="ppub">1308-8750</issn>
                                        <issn pub-type="epub">1308-8769</issn>
                                                                                            <publisher>
                    <publisher-name>Ondokuz Mayıs Üniversitesi</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.7161/omuanajas.557601</article-id>
                                                                                                                                                                                            <title-group>
                                                                                                                        <article-title>Toprakların tuzluluk ve sodikliliğinin alansal ve zamansal değişiminin jeoistatistiksel yöntemlerle değerlendirilmesi: Bafra ovası örneği</article-title>
                                                                                                                                                                                                <trans-title-group xml:lang="en">
                                    <trans-title>Evaluation of spatial and temporal changes of soil salinity and sodicity using geostatistic methods: the case of Bafra plain</trans-title>
                                </trans-title-group>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0002-4335-4074</contrib-id>
                                                                <name>
                                    <surname>Taşan</surname>
                                    <given-names>Sevda</given-names>
                                </name>
                                                                    <aff>ONDOKUZ MAYIS ÜNİVERSİTESİ, ZİRAAT FAKÜLTESİ, TARIMSAL YAPILAR VE SULAMA BÖLÜMÜ</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Demir</surname>
                                    <given-names>Yusuf</given-names>
                                </name>
                                                                    <aff>ONDOKUZ MAYIS ÜNİVERSİTESİ, ZİRAAT FAKÜLTESİ, TARIMSAL YAPILAR VE SULAMA BÖLÜMÜ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20191015">
                    <day>10</day>
                    <month>15</month>
                    <year>2019</year>
                </pub-date>
                                        <volume>34</volume>
                                        <issue>3</issue>
                                        <fpage>336</fpage>
                                        <lpage>350</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20190424">
                        <day>04</day>
                        <month>24</month>
                        <year>2019</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20190930">
                        <day>09</day>
                        <month>30</month>
                        <year>2019</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 1986, Anadolu Tarım Bilimleri Dergisi</copyright-statement>
                    <copyright-year>1986</copyright-year>
                    <copyright-holder>Anadolu Tarım Bilimleri Dergisi</copyright-holder>
                </permissions>
            
                                                                                                <abstract><p>Sulu tarım alanlarında uygun sulama yönetimininseçimi ve sulama suyu kalitesine bağlı olarak tuzlulaşma problemleri iledrenajın yönetimi sürdürülebilirliği etkileyen önemli faktörlerdir. Topraktuzluluğu ve sodiklik sulanan tarım alanlarındaki bitki üretimini sınırlayaniki önemli özelliktir. Bu özelliklerin alansal ve zamansal değişimlerininbilinmesi bitki gelişimindeki negatif etkilerini engellemek için önemlidir. Buçalışma 2010 ve 2016 yıllarında Bafra ovası sağ sahil topraklarındaki tuzlulukve sodikliğin alansal değişimlerinin belirlenmesi ve sulamanın toprak tuzluluğuve sodikliği üzerine etkisinin değerlendirilmesi amacıyla yapılmıştır. Çalışmaalanından 2010 ve 2016 yıllarında dört derinlikten bozulmuş toprak örneklerialınmıştır. Toprakların tekstür, elektriksel iletkenlik (EC), toprak reaksiyonu(pH), değişebilir sodyum yüzdesi (ESP) ve CaCO3 içeriklerilaboratuvar analizleri ile belirlenmiştir. Toprak özelliklerinin alansalbağımlılığını belirlemek için deneysel semivariogramlar geliştirilmiş veörneklenmemiş noktalardaki özellikleri tahmin etmek için ordinary kriginganalizi yapılmıştır. Toprakların EC ve ESP değerleri tüm derinliklerde ve tümdönemlerde yüksek değişkenlik ve orta derecede alansal bağımlılık göstermiştir.Çalışma alanında en düşük değişkenliğin pH parametresinde olduğu görülmüştür.Çalışma alanı topraklarının tekstür içeriklerinin yüksek değişkenlik gösterdiğibelirlenmiştir. Tüm değişkenlerin jeoistatistiksel etki uzaklığı 3100 m’denbüyük bulunmuştur. Ayrıca toprakların EC ve ESP’sinin alansal dağılımı 2010yılından 2016 yılına kadar önemli derecede azalmıştır. Bunun nedeni isetopraktaki tuzların yıkanarak drenaj sistemi yardımıyla arazidenuzaklaştırılmasına bağlanmıştır. Çalışma alanının doğusunda tuzluluğun yüksekolduğu alanlar ile sodik alanların varlığı belirlenmiştir. Bu durum ise bualanlarda yeraltı suyu seviyesinin yüksek olmasına bağlanmıştır. Bu alanlardasulama mevsiminde buharlaşma ile çözünebilir tuzların yukarı taşınmasınıntakibi için yeraltı suyu tuzluluğu ve derinliğinin düzenli olarak izlenmesiönerilmiştir. Özelliklerin alansal dağılım haritaları incelendiğinde tuzlulukve sodiklik değişkenlerinin yönetimi ile ilgili uygulamaların daha çokdoğu-batı yönünde planlanmasının yararlı olacağı düşünülmektedir.</p></abstract>
                                                                                                                                    <trans-abstract xml:lang="en">
                            <p>Selection ofappropriate irrigation management in irrigated agricultural areas and drainagemanagement with salinization problems depending on the quality of irrigationwater are important factors affecting sustainability. Soil salinity andsodicity are two important features that limit plant production in irrigatedagricultural areas. It is important to know the spatial and temporal changes ofthese properties in order to prevent negative effects on plant development.This study was carried out to determine the spatial changes of salinity andsodicity and to evaluate the effect of irrigation on soil salinity and sodicityin the right coastal areas of Bafra plain in 2010 and 2016. Soil samples weretaken from the study area with four different depth in 2010 and 2016. Soiltexture, electrical conductivity (EC), soil reaction (pH), exchangeable sodiumpercentage (ESP) and CaCO3 contents were determined by laboratoryanalysis. In order to determine the spatial dependence of soil properties,experimental semivariograms were developed and ordinary kriging analysis wasperformed to estimate the properties at non-sampled points. The EC and ESPvalues of the soils showed high variability and moderately spatial dependenceat all depths and in all periods. The lowest variability was observed in the pHparameter in the study area. Texture contents of the study area soils showedhigh variability. Geostatistical range values of all variables was found to begreater than 3100 m. Furthermore, the spatial distribution of the EC and ESP ofsoils has decreased significantly from 2010 to 2016. The reason for this is dueto the removal of the salts in the soil from the field by means of the drainagesystem. High salinity areas and the presence of sodic areas were determined atthe east of the study area. This is due to the high groundwater level in theseareas. Monitoring of groundwater salinity and depth has been proposed regularlyin order to follow the uptake of soluble salts by evaporation during irrigationseason in these areas. When the spatial distribution maps of the properties areexamined, it is considered that it would be beneficial to plan the applicationsrelated to salinity and sodicity variables in the east-west direction.</p></trans-abstract>
                                                            
            
                                                            <kwd-group>
                                                    <kwd>Bafra ovası</kwd>
                                                    <kwd>  Coğrafi Bilgi Sistemleri</kwd>
                                                    <kwd>  Jeoistatistik</kwd>
                                                    <kwd>  Sodiklik</kwd>
                                                    <kwd>  Tuzluluk</kwd>
                                            </kwd-group>
                                                        
                                                                            <kwd-group xml:lang="en">
                                                    <kwd>Bafra plain</kwd>
                                                    <kwd>  Geographical Information Systems</kwd>
                                                    <kwd>  Geostatistics</kwd>
                                                    <kwd>  Sodicity</kwd>
                                                    <kwd>  Salinity</kwd>
                                            </kwd-group>
                                                                                                            </article-meta>
    </front>
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