BURSA, KARACABEY SUBASAR ORMANI DİŞBUDAK (Fraxinus angustifolia Vahl.) MEŞCERELERİNİN ÖLÜ ÖRTÜ VE TOPRAKTA DEPOLANAN ORGANİK KARBON VE BESİN ELEMENTLERİNİN BELİRLENMESİ

Year 2024, Volume: 8 Issue: 2, 176 - 198, 31.10.2024

Temel Sarıyıldız , Gamze Savacı Selamet

Abstract

Sulak alanların %60’ını oluşturan ve yeryüzü toprak organik karbon stokunun %35’inden sorumlu olan subasar orman ekosistemlerinde, makro ve mikro besin stokları bu ekosistemlerin gelişmesi ve sürdürülebilirliği açısından önem kazanmaktadır. Çalışmada, Bursa Karacabey subasar ormanlarında, subasar ve karasal ortamdaki dişbudak meşcerelerinin, ölü örtü ve topraklarının C yoğunluğu, makro ve mikro besin yoğunluğunu ve stoklarını toprak derinlik kademeleri de dikkate alarak belirlemektir. Ölü örtü C, N, P, K, Ca, Mg ve S stoku sırasıyla 1522, 52, 62, 123, 915, 211 ve 110 kg/ha olarak subasar ortamda belirlenirken, karasal ortamda bu değerler N hariç önemli derecede daha düşük olup, sırasıyla 829, 61, 51, 88, 538, 129 ve 61 kg/ha olarak belirlenmiştir. Ölü örtü mikro besin stoklarıda subasar ortamda karasal ortama göre daha yüksek bulunmuştur. Toprak C ve makro besin stoklarıda (N dahil) subasar ortamda daha yüksek bulunmuştur. Topraktaki C, N, P, K, Ca, Mg ve S stoku sırasıyla 246, 27, 6, 85, 104, 188 ve 6 ton/ha olarak subasar ortamda belirlenirken, karasal ortamda bu değerler sırasıyla 233, 24, 5, 77, 177 ve 6 ton/ha olarak belirlenmiştir. Toprak mikro besin (Fe, Mn, Na, Cu, Zn, Cl, Ni ve Co) stoklarıda subasar ortamda karasal ortama göre daha yüksek bulunmuştur. Ek olarak, ölü örtü karbon ile makro ve mikro besin stoklarının meşcere yaşına bağlı olarak azaldığı, topraktaki stoklarının ise artış gösterdiği tespit edilmiştir. C ve N’un en fazla üst topraklarda (0-30 cm) stoklandığı (sırasıyla %71 ve %61), diğer makro ve mikro besinlerin ise alt topraklardaki (30-100 cm) stoklarının, üst topraklardan daha fazla olduğu belirlenmiştir. Sonuçlar, atmosferik karbondioksiti ve azotu tutma ve depolama kapasiteleri nedeniyle iklim değişikliğinin azaltılmasında önemli bir role sahip, subasar orman ekosistemlerinin karbon ve besin döngülerini ve stoklarını anlamaya ve modellemeye faydalı sayısal bilgiler sağlaması açısından önemlidir.

Keywords

Sulak alanlar, makro ve mikro besinler, meşcere yaşı, toprak derinliği

Project Number

121O702

DETERMINATION OF ORGANIC CARBON AND NUTRIENTS STOCKS IN FOREST LITTER AND SOIL OF ASH TREE (Fraxinus angustifolia Vahl.) STANDS IN BURSA, KARACABEY FORESTED WETLANDS

Abstract

In forested wetlands, which constitute 60% of wetlands and are responsible for 35% of the earth's soil organic carbon stock, macro and micro nutrient stocks are also important in terms of the development and sustainability of these ecosystems. Aim of the study was to determine the carbon, macro and micro-nutrient concentrations and stocks in the litter and soil of ash tree stands at the floodplain and terrestrial sites in Bursa Karacabey. Litter C, N, P, K, Ca, Mg and S stocks in the floodplain were 1522, 52, 62, 123, 915, 211 and 110 kg/ha respectively, while except for N, those values were significantly lower in the terrestrial as 829, 61, 51, 88, 538, 129 and 61 kg/ha, respectively. Litter micronutrient stocks were also higher in the floodplain sites. Soil C and macronutrient stocks were also higher in the floodplain. While soil C, N, P, K, Ca, Mg and S stocks in the floodplain were 246, 27, 6, 85, 104, 188 and 6 ton/ha respectively, these values were found as 233, 24, 5, 77, 177 and 6 ton/ha in the terrestrial. Soil micronutrient stocks were also higher in the floodplain sites. In addition, it was noted that litter carbon and macro and micro nutrient stocks decreased with the stand age, while soil stocks increased. It was also seen that soil C and N were mainly stored in the topsoil (0-30 cm) (71% and 61%, respectively), whereas the stocks of other soil macro and micronutrients in the subsoil (30-100 cm) were higher compared to the topsoil. The results has provided numerical information whşch are useful for understanding and modeling the carbon and nutrient cycling and stocks of forested wetland ecosystems, which have an important role in reducing climate change due to their capacity to capture and store atmospheric CO2 and N.

Keywords

Wetlands, makro and micro nutrients, stand age, soil depths

Ethical Statement

Bu çalışma için etik kurul onayı gerekmemektedir.

Supporting Institution

Bu araştırma TÜBİTAK 1001 121O702 numaralı Bilimsel ve Teknolojik Araştırma Projelerini Destekleme Programı tarafından desteklenmiştir.

Project Number

121O702

Thanks

TÜBİTAK'a desteklerinden dolayı teşekkür ederiz.

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