Ercan Oktan

• Professor
• Karadeniz Technical University

In this study, the effect of forest fires occured on the Turkish red pine ecosystems in August 2021 in Aydıncık district of Mersin province in Turkey on the habitat was examined and evaluated in terms of ecological restoration. In this context, topsoil (0-20cm) and subsoil (20-50cm) samples collected from fired and non-fired stands under the same e...

Deforestation is among the most important environmental problems of the current century. With the destruction of forest ecosystems, which play an important role as natural carbon pools on global warming and climate change, the amount of carbon held above ground biomass and in the soil decreases, while soil loss through erosion increases significant...

Anadolu’nun Batı Karadeniz kıyılarının arkeolojik araştırmalar açısından uzun yıllarıdır ihmal edilmiştir. Bölgede yürütülen arkeolojik çalışmaların büyük bir bölümü yüzey araştırmalarından oluşmaktadır. Kastamonu’nun Devrekani ilçesi yakınlarındaki Kınık yerleşiminde yürütülen çalışmalar ve Kdz. Ereğli’nin Karadeniz kıyısına yakın bir noktada bulu...

Yaprak alan indeksi (YAİ), orman ekosistemlerinin temel yapısal karakterlerinin ortaya konmasında önemli faktörlerin başında gelmektedir. Çünkü YAİ meşcerenin tepe çatısında oluşan birçok biyolojik ve fiziksel sürecin değişimini ortaya koyabilmektedir. Bu bağlamda, YAİ değerlerinin belirlenmesi ormancılık açısından önem taşımaktadır. YAİ’nin hesapl...

This paper researches top-soil loss depends on Anatolian black pine stands by different canopy density. The stand profile is playing an important role on the living and non-living environment in the ecosystem and it affects directly canopy density (CD), leaf area index and silvicultural treatments and indirectly affects the soil properties. Within...

The forests of the eastern Black Sea in Turkey are populated by Oriental spruce (Picea orientalis (L.) Link.), a heterogeneous species in terms of the quality of wood. Oriental spruce forests have been managed and used for lumbering in lack of consideration of the homogeneity of the trees. Furthermore, it is necessary to know what kinds of Oriental...

In the present study, the effects on rooting success of different greenhouse media (Greenhouse-1 media with air temperature at 20±2°C, rooting table temperature at 20±2°C and humidity at 70%±2, Greenhouse-2 media with air temperature at 20±2°C, rooting table temperature at 25±2°C and humidity at 70%±2) and different doses (1000 and 5000 ppm) of hor...

Aim of the study: In this study, cohort structures of the high mountain forests in northeast Turkey were investigated.Material and Methods: Eighteen plots were selected in six sampling units. Treeline, timberline and sub-timberline stands were sampled in each unit. Main results: Structures varied from single-cohort to multi-cohort stands in the res...

We examined the effect of thermal treatment at two temperatures (60 s of 90°C dry heat and 60 min in 40°C hot water) versus control conditions on the germination of oriental spruce (Picea orientalis (L.) Link.) seeds originating from different subalpine provenances. Cutting test results showed that there was wide variation (between 10% and 90%) in...

In a forest ecosystem, stand structure mostly affected by diameter of breast height (DBH), diameter of d0.30, tree height, crown shape (four cardinal direction), crown width, height to crown base and tree distribution parameters and many stand profile software using these parameters have been developed. The stand profile is play an important role o...

Owing to the land use change, vegetation cover, ecosystem functions and soil properties are affected and changing. Such a change on the land use forms is also the fact in this study area. The main purpose in this study was to determine the effects of land use change on the soil properties, soil loss and carbon stock. As a result, the land use chang...

In the present study, the effects of release cuttings on stand structures and increment and growth relations were investigated in afforested oriental beech (Fagus orientalis Lipsky) stands. To maximize spatial variation in dataset, stratified random sampling was used to layout transects. 24 sampling plots were determined which reflects average char...

We studied relationships between stand structure and stand stability according to thinning intensity in an afforested oriental beech stand. Various thinning intensities were applied in sample stands. We sampled eight plots in stands that were lightly thinned, eight plots in heavily thinned stands and eight plots in unthinned stands as a control. He...

zet Yüksek dağ ormanlarının planlamasına öncelikli olarak alansal olarak nerede çalışılacağı sorusuna cevap vermekle başlanmalıdır. Yüksek dağ ormanı için doğal sınırların ve sınırlar arasındaki geçişlerin iyi örneklenmesi gerekmektedir. Özellikle subalpin basamakta yer alan orman sınırı, ağaç sınırı ve kötürüm ağaç sınırı pratikte oldukça kolay ve...

The main goals of this research were (1) to assess the impact of different release operations on soil loss amounts and (2) to determine the relationship between soil loss amounts and release cutting intensities in Oriental beech. Study area is an afforestation area which was constructed in 1991. Actual age of the stand was 22. To maximize spatial v...

130. JAHRGANG HEFT 4 Oktober bis Dezember 2013 Seite 219–268 Nachdruck, auch auszugsweise, nur mit Genehmigung des Verfassers und des Verlages gestattet.: Characteristics of shagbark hi-ckory in the Niepołomice Primeval Forest of Southern Poland; Eigenschaften von Schuppenrinden-Hickory im Niepołomice Urwald in Südpolen � � � � � � � � � � � � � �...

130. JAHRGANG HEFT 4 Oktober bis Dezember 2013 Seite 219–268 Nachdruck, auch auszugsweise, nur mit Genehmigung des Verfassers und des Verlages gestattet.: Characteristics of shagbark hi-ckory in the Niepołomice Primeval Forest of Southern Poland; Eigenschaften von Schuppenrinden-Hickory im Niepołomice Urwald in Südpolen � � � � � � � � � � � � � �...

zet Yüksek dağ ormanı basamağı içerisinde yer alan meşcerelerde öncelik koruma fonksiyonu üzerinde toplanmıştır. Erozyon kontrolü, çığ ve heyelan önleme, taş ve kaya yuvarlanması, yaban hayatı, rekreasyon gibi fonksiyonlar açısından değerlendirilme önceliği olan yüksek dağ ormanlarında, odun üretimi hiçbir zaman öncelikli olarak değerlendirmeye alı...

This study was carried out in order to state the functional differences between the pure oriental spruce stands in subalpine zone. In the research, the pure oriental spruce stands in the subalpine zone were evaluated according to their wood production (F1), erosion control (F2), water production (F3), grass productivity-wild life habitat (F4), scen...

Human induced pressures on the natural resources are still in progress and the conservation efforts, too. The need for sufficient knowledge and data for the decision makers is obvious. This study is aimed to contribute this absence. The study area Çamlıhemsin district Kito mountain is situated in the Eastern Black Sea Region of Turkey and character...

It is necessary to model, analyze and evaluate the stand structure on account of understanding, improvement and management of high mountain forests. Stand structures in high mountain forests play an effective role against natural hazards such as erosion, torrent, overflowing, landslide, avalanche, stone and rock fall. Stand structure is also closel...

Distribution area of oriental spruce [Picea orientalis (L.) Link.] in the world is only in the north-east of Turkey and Caucasian. Because of being the semi monopoly tree with respect to its distribution and representing the upper forest line, it is necessary to analyse, evaluate and model the stand structures of oriental spruce forests in Turkey....

The aim of the present study was to determine the ef-fects of 3 different land-use types (forest land, rural land and pasture land type) and two slope classes (20% and 40%) on soil loss and runoff. A rain gauge was installed in the research area in order to measure precipitation daily, monthly and annually. For each land-use type, two experi-mental...