Türkiye’nin Güneyindeki Havza Ağaçlandırmalarına Uygulanmış Seçim Deneyleri Yönteminde Kullanılan Modellerin Karşılaştırılması

Çalışmanın amacı: Bu çalışmada, erozyon kontrolü çalışmalarının yarattığı dört faydanın (sellerin önlenmesi, toprak erozyonunun azaltılması, baraj ömrünün ve kaliteli kaynak suyuna erişimin artırılması) farklı modellere göre değer tahminleri ve bu modellerin açıklayıcılıkları karşılaştırılmıştır. Çalışma alanı : Çakıt Çayı Havzası araştırma alanı olarak seçilmiştir. Materyal ve yöntem: Bu çalışmada, Seçim Deneyleri Yöntemini uygulamak için Deniz (2012) tarafından toplanan veriler kullanılmıştır. Deniz (2012), söz konusu faydaların marjinal değerlerini Multinomial Logit Modele göre tahmin etmişken, bu çalışmada farklı değişkenlerle kurulan başka bir Multinomial Logit Model ile Karma Çok Durumlu Logit Model kullanılarak iki ayrı tahmin daha yapılmış ve bu üç modelin sonuçları karşılaştırılmıştır. Temel sonuçlar: Karma Çok Durumlu Logit Modeli kullanılarak bulunan marjinal değer tahminleri, Multinomial Logit Modelinde bulunan tahminlerden farklı olmasına karşın değişkenler arasındaki ilişkiler değişmemiştir. Karma Çok Durumlu Logit Modelin açıklayıcılığı (Pseudo-R2=0.548), Multinomial Logit Modellerden (0.251 ve 0.071) daha büyüktür. Araştırma vurguları: Çalışmada, erozyon kontrolü hizmetinin değerini belirlemek için kullanılan modeller değiştikçe, tahmin edilen değerlerin büyüklüklerinin de değiştiği görülmüştür.

Comparison of the Models in Choice Experiments Method Application for Watershed Afforestation in Southern Turkey

Aim of study: In this study, the value estimates of the four benefits (preventing floods, reducing soil erosion, increasing dam life and access to quality spring water) created by erosion control activities are compared according to different models and the determination of these models.Area of study: The Çakıt Stream Watershed was selected as a study area.Material and methods: In this study, the data collected by Deniz (2012) to apply Choice Experiments Method were used. While Deniz (2012) had estimated the marginal values of the benefits based on Multinomial Logit Model, in this study, the estimations were separately made in order to compare the results of Deniz (2012) using both another Multinomial Logit Model with different variables and Mixed Multinomial Logit Model. Main results: Although the marginal values found by using Mixed Multinomial Logit Model are different from the estimations found with Multinomial Logit Model, the relationships among the variables did not change. Determination of Mixed Multinomial Logit Model is bigger (Pseudo-R2=0.548) than Multinomial Logit Models (0.251 and 0.071).Highlights: In the study, it was observed that as the models used to determine the value of the erosion control service changed, the magnitude of the estimated values also changed.

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Kastamonu Üniversitesi Orman Fakültesi Dergisi-Cover
  • ISSN: 1303-2399
  • Yayın Aralığı: Yılda 3 Sayı
  • Başlangıç: 2001
  • Yayıncı: Kastamonu Üniversitesi
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