Relationships between site index and ecological variables of trembling poplar forests (Populus tremula L.) in Türkiye

Velioğlu, Ercan; Güner, Şükrü Teoman; Karakurt, Hidayet; Taştan, Yusuf; Yavuz, Zuhal; Tuğrul, Dilek

doi:10.1007/s10661-023-10933-3

Cited by 3 publications

(7 citation statements)

References 28 publications

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“…The European aspen is modest in its requirements for both rainfall and temperature, exhibiting resilience against frost. It holds significant importance in highmountain forestry (Atalay, 2019;Velioğlu et al, 2023). Atalay (2019) mentions that in Türkiye, European aspen demonstrates a wide distribution from semi-arid to semi-humid continental, humid temperate, and moist to semi-moist cold climates, where relative humidity ranges between 60 and 70% and annual average rainfall exceeds 450 mm up to over 1000 mm.…”

Section: Ecological Featuresmentioning

confidence: 99%

“…It's been observed that European aspen proliferates and site increase in locations with over 100 days of snow cover. Velioğlu et al (2023) report an annual average rainfall of 604 mm in the European aspen areas of Mount Erciyes. In the areas where European aspen spreads, the annual average temperature ranges between -30 °C and 12 °C.…”

Section: Ecological Featuresmentioning

confidence: 99%

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Stand Analysis and Distribution Areas of European Aspen (Populus tremula L.) Forests in Türkiye

Turna,

Atar

2024

SilvaWorld

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The aim of the study is to analyze the studies that have been done and need to be done on the general characteristics, distribution areas, and silviculture of European aspen stands naturally distributed in Türkiye. In the study, data obtained from the General Directorate of Forestry, Department of Forest Administration, and Planning for the year 2019 was used as the material. With these data, the spatial extent of European aspen stands in Türkiye was determined. Based on the obtained data, pure stands of European aspen, primarily in the regions where they have the most extensive spatial distribution, were examined on-site. Additionally, by evaluating the planning data in comparison with the current situation, European aspen stands were analyzed from a silvicultural perspective. The study determined that the total extent of European aspen forests in Türkiye is 278,013.7 hectares. Of the European aspen stands in Türkiye, 40.4% are in Elazığ, 17.3% in Erzurum, 15.7% in Trabzon, 11.4% in Kayseri, and 7.5% in Giresun Regional Directorates of Forestry. Furthermore, 92.3% of European aspen stands are located within these five regional directorates. Moreover, in Türkiye, 34,916.6 hectares of pure aspen stands and 13,745.6 hectares of stands dominated by aspen exhibit degraded qualities. Depending on the developmental stages, the largest spatial distribution in both pure stands (8,886.3 ha) and stands dominated by aspen (6,071.3 ha) has been identified in the ab developmental stages. When examining the developmental stages of European aspen in Türkiye, it's generally observed that young European aspen stands prevail. The management objective of same-aged pure and mixed aspen forests should be redefined according to both the succession stages and habitat conditions. In stands with ecological functions, protection and moderate interventions must be made, and in stands with production functions, necessary tending interventions must be made on time and sustainability must be ensured.

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Section: Ecological Featuresmentioning

confidence: 99%

Section: Ecological Featuresmentioning

confidence: 99%

Stand Analysis and Distribution Areas of European Aspen (Populus tremula L.) Forests in Türkiye

Turna,

Atar

2024

SilvaWorld

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“…For example, Alavi et al [7] also attributed increased productivity in oriental beech stands of Hyrcania, Iran, to increasing the ELEV to the optimum altitudinal zone, above 1500 m. Güner et al [72] linked this positive effect of the ELEV on Anatolian black pine productivity to improved precipitation at higher altitudes. However, other authors [4,14,15] reported conflicting findings due to deteriorated ecological conditions with increasing ELEV, such as shortening the growing period, decreasing fine-textured soil, and reducing decomposition due to the condensing temperature. The reducing effect of LAT on stand productivity was also reported in some studies [14,73].…”

Section: Relationships Between the Stand Dominant Height (Sdh) And Sp...mentioning

confidence: 99%

“…Seltmann et al [13] reported improved Norway spruce growth because of the low temperature and high AWC. However, the temperature in most studies [14,15,82,83] positively affected tree growth, attributed to prolonged growing periods, enhancing microbial activities and improving decomposition and soil attributes. Although no significant effect of precipitation on the SDH was observed in this study, some other studies [13,72,80,81,83] reported that it somehow affects stand productivity.…”

Section: Relationships Between the Stand Dominant Height (Sdh) And Sp...mentioning

confidence: 99%

“…The most critical factor group affecting the SDH was the climate, with an importance rate of 62.3%, and the soil, with an importance rate of 61.2% for the MLR and RT models (Figure 8). Many studies [4,12,15,16,71,72,82,92] have used MLR and RT for estimating forest productivity. Our model results are consistent with those reported in other studies [4,5,12,15,72,[92][93][94].…”

Section: Predicting and Mapping Sdhmentioning

confidence: 99%

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Predicting and Mapping Dominant Height of Oriental Beech Stands Using Environmental Variables in Sinop, Northern Turkey

Yener,

Guvendi

2023

Sustainability

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The dominant height of forest stands (SDH) is an essential indicator of site productivity in operational forest management. It refers to the capacity of a particular site to support stand growth. Sites with taller dominant trees are typically more productive and may be more suitable for certain management practices. The present study investigated the relationship between the dominant height of oriental beech stands and numerous environmental variables, including physiographic, climatic, and edaphic attributes. We developed models and generated maps of SDH using multilinear regression (MLR) and regression tree (RT) techniques based on environmental variables. With this aim, the total height, diameter at breast height, and age of sample trees were measured on 222 sample plots. Additionally, topsoil samples (0–20 cm) were collected from each plot to analyze the physical and chemical soil properties. The statistical results showed that latitude, elevation, mean annual maximum temperature, and several soil attributes (i.e., bulk density, field capacity, organic carbon, and pH) were significantly correlated with the SDH. The RT model outperformed the MLR model, explaining 57% of the variation in the SDH with an RMSE of 2.37 m. The maps generated by both models clearly indicated an increasing trend in the SDH from north to south, suggesting that elevation above sea level is a driving factor shaping forest canopy height. The assessments, models, and maps provided by this study can be used by forest planners and land managers, as there is no reliable data on site productivity in the studied region.

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Coeficiente mórfico de Apuleia leiocarpa (Vogel) J.F. Macbr. por tipo de bosque, Amazonía peruana

Garate-Quispe

Florez-Castillo

2023

RMCF

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El objetivo del estudio fue determinar y comparar el coeficiente mórfico (CM) y modelos alométricos para estimar volumen fustal de Apuleia leiocarpa en dos tipos de bosque en la Amazonía de Madre de Dios, Perú. Se utilizó un tamaño de muestra de 42 árboles talados de A. leiocarpa: 22 en bosques de colina baja y 20 en bosque de terraza baja. De cada individuo se midió su diámetro a la altura del pecho (DAP) y la altura del fuste, y se realizaron mediciones de diámetro a lo largo del fuste cada 2 m. Por tipo de bosque se determinó el coeficiente mórfico y se evaluaron 11 modelos no lineales para el volumen fustal comercial. El CM en el bosque de colina baja es significativamente superior al calculado en el bosque de terraza baja (t-Student, p<0.01). El ANCOVA mostró que el CM varía significativamente entre los dos tipos bosque. El DAP no influyó de forma significativa en el CM (p>0.05), aunque sí la interacción entre bosque × DAP (p<0.05). El mejor modelo alométrico para estimar el volumen varía según el tipo de bosque, en el bosque de colina baja fue el modelo de Takata y en el bosque de terraza baja fue el modelo de Spurr con término independiente.

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Relationships between site index and ecological variables of trembling poplar forests (Populus tremula L.) in Türkiye

Cited by 3 publications

References 28 publications

Stand Analysis and Distribution Areas of European Aspen (Populus tremula L.) Forests in Türkiye

Stand Analysis and Distribution Areas of European Aspen (Populus tremula L.) Forests in Türkiye

Predicting and Mapping Dominant Height of Oriental Beech Stands Using Environmental Variables in Sinop, Northern Turkey

Coeficiente mórfico de Apuleia leiocarpa (Vogel) J.F. Macbr. por tipo de bosque, Amazonía peruana

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