Türkiye’nin Önemli İğne Yapraklı Türleri İçin BEF-BCEF Hesaplamaları

Abstract

Birleşmiş Milletler İklim Değişikliği Çerçeve Sözleşmesi (UNFCCC)’ne taraf olan ülkelerin her biri karbon stok gelişim düzeyini belirlemek amacıyla kendi ülkeleri için çeşitli ulusal raporlar hazırlamak ve iletmekle yükümlüdür. Bu amaçla kullanılan odunsu biyokütlenin hesabında genel kabul görmüş iki yaklaşım bulunmaktadır. Birincisi, allometrik eşitlikler, ikincisi ise biyokütle belirlemesinde Biyokütle Genişletme Faktörleri (BEF) ya da Biyokütle Çevirme ve Genişletme Faktörlerinin (BCEF) kullanımıdır. Türkiye’de zaman içinde çeşitli araştırmacılar tarafından BEF ve BCEF değerleri hesaplanmıştır. Fakat bu katsayılar genellikle türetilmiş tablo değerlerinden elde edilmiştir. Bu çalışmada ise Türkiye’nin önemli iğne yapraklı türleri için ağaç bileşenlerine ait BEF ve BCEF katsayıları arazi verilerinden elde edilen gerçek ölçüm değerleri kullanılarak belirlenmiştir. Ayrıca ibre kuru madde içeriği (LDMC) ve odun yoğunluk değerleri de (WD) hesaplanmıştır. Toprak üstü ortalama BEF değeri iğne yapraklı ağaçlar için 1,374 olarak belirlenmiştir.

Keywords

• İğne yapraklı türler
• biyokütle
• BEF
• BCEF
• LDMC
• WD

F-BCEF Calculations for Turkey's Impotant Coniferous Species

Abstract

Countries that are parties to the United Nations Framework Convention on Climate Change (UNFCCC) are obliged to prepare and deliver various national reports in order to determine the level of carbon stock development of the situation in their countries. There are two generally accepted approaches to calculate the woody biomass used for this purpose. The first is the allometric equations, the second is the use of Biomass Expansion Factors (BEF) or Biomass Conversion and Expansion Factors (BCEF) in biomass determination. BEF and BCEF values are calculated by various researchers over time in Turkey. However, these coefficients are generally obtained from derived table values. In this study, BEF and BCEF coefficients belonging to the tree components were determined using real measurement values obtained from plot data for important coniferous species of Turkey. In addition, leaf dry matter content (LDMC) and wood density values (WD) were also calculated. The average above ground BEF value was determined as 1.374 for coniferous trees.

Keywords

• Coniferous species,
• biomass,
• BEF,
• BCEF,
• LDMC,
• WD.

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