Toprak Özelliklerinin Belirlenmesinde Spektrofotometrik Yansımalardan Yararlanma Olanakları

Year 2012, Volume: 26 Issue: 2, 37 - 46, 01.08.2012

Yücel Tekin Zeynal Tümsavaş

Abstract

Keywords

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Toprak Özelliklerinin Belirlenmesinde Spektrofotometrik Yansımalardan Yararlanma Olanakları

Abstract

Hassas tarım bileşenlerini kullanılarak toprak özelliklerinin belirlenmesi ile toprak yönetimi ve korumasının etkilerini artırmak ve tarımsal girdi maliyetlerini azaltmak amaçlanmaktadır. Toprak fiziksel ve kimyasal özelliklerinin hızlı ve güvenilir bir biçimde belirlenerek toprak haritalaması amacı ile değerlendirilmesinde spektrofotometrelerden elde edilen yansıma değerleri kullanılabilmektedir. Spektrofotometreden elde edilen yansıma değerlerinin hassas tarım uygulamalarında kullanılabilmesi için tam çapraz doğrulamalı (full cross-validation) kısmi en küçük kareler (partial least square-PLS) regresyon analizi uygulanarak toplam modeli oluşturmak gerekmektedir. Yapılan regresyon analizi sonucunda oluşturulan modele ait R2değerlerine bağlı olarak belirlenmesi istenen toprak özelliği ile ilgili tahmin edilebilirlik durumu incelenmektedir. Bu araştırmada toprak özelliklerinin belirlenmesinde spektrofotometreden yararlanma olanakları incelenmiştir

Keywords

Toprak özellikleri, spektrofotometre, hassas tarım

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