Beech forests of Azerbaijan: The modern condition, age structure and regeneration

Hasanov, Z.M.; Ibrahimov, Zakir; Nabiyev, V.R.

doi:10.1016/j.aasci.2016.08.003

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…Transformations become part of a broader strategy of climate change mitigation, and other urgent environmental problems of this time such as loss of biological diversity (Thomas et al 2014;Spiecker et al 2004). One of the crucial factors influencing the success of performed forest transformations is the existence of natural regeneration that is more productive and resistant to external environmental impacts in comparison with artificial regeneration (Hasanov et al 2016). At the same time it also is an indicator of forest vitality and stability (Štícha et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Long-term transformation of submontane spruce-beech forests in the Jizerské hory Mts.: dynamics of natural regeneration

Slanař¹,

Vacek²,

Vacek³

et al. 2017

Central European Forestry Journal

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The paper deals with development of the natural regeneration of even-aged spruce-beech forests during their transformation to uneven-aged stands with diversified structure at the Jedlový důl area in the Protected Landscape Area Jizerské hory Mts., Czech Republic. Shelterwood management system and free felling policy based on selection principles has been applied there since 1979 with the support of admixed tree species of the natural species composition, especially silver fir (Abies alba Mill.). The research was focuses on structure and development of natural regeneration with the emphasis on ungulate damage and interaction with tree layer from 1979 to 2015. In the course of 36 years, the regeneration structure was diversified towards the close-to-nature tree species composition, spatial and age structure. The number of regeneration recruits increased in average from 941 to 41,669 ind ha -1. During this period share of European beech (Fagus sylvatica L.) significantly (p < 0.01) increased (by 53.6%), while the share of Norway spruce (Picea abies [L.] Karst.) decreased (by 51.5%), such as damage caused by ungulate (by 61.4%) with the highest loses on sycamore maple (Acer pseudoplatanus L.), rowan (Sorbus aucuparia L.) and silver fir. Moreover, the parent trees had a significant negative influence on natural regeneration at smaller spacing (within a 1 -5 m radius from the stem). Both, regeneration potential and effective role of the tree layer during the forest transformation has been confirmed as important prerequisites for ongoing forest transformation.

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Section: Introductionmentioning

confidence: 99%

Long-term transformation of submontane spruce-beech forests in the Jizerské hory Mts.: dynamics of natural regeneration

Slanař¹,

Vacek²,

Vacek³

et al. 2017

Central European Forestry Journal

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“…The distribution of stands by age classes reflects their spatial and temporal distribution. It can be achieved by regulating natural regeneration (Hasanov et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…The almost entire absence of up to 40-year-old natural oak stands in the forest fund confirms this fact. Successful natural regeneration requires optimal conditions for the emergence and growth of young seedlings, as well as the elimination of the adverse impact of environmen-tal externalities (Hasanov et al, 2017). The issue of natural seed regeneration of oak forests is still urgent for the Ukrainian forestry sector.…”

Section: Introductionmentioning

confidence: 99%

Ukrainian plain oak forests and their natural regeneration

Tkach

Rumiantsev²,

Kobets³

et al. 2019

Forestry Studies

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Changes in the areas and stock volumes of oak stands were analyzed within the six administrative regions in the plain area of Ukraine, based on forest management data (subcompartment database) as of 2001 and 2016. The studied regions geographically related to the Left-bank Forest-Steppe zone of Ukraine (Kyiv, Poltava, Sumy, Kharkiv, Cherkasy and Chernihiv Regions). The analyzed area was over 284,000 hectares. The paper outlines the present state of the oak stands, concerning their origin (vegetative, natural seed and planted seed stands). Forestry-taxation indices of the stands were determined by grouping the plots according to age and further clustering in four age groups. The natural regeneration under a canopy in oak stands was accounted and estimated using circular 10 m2 (R = 178 cm) accounting plots. The oak forests were found to be dominated by stands of vegetative (coppice) origin (57%). Planted seed-origin oak stands covered 101,000 ha or 36% of the total area (284,000 ha). Stands of natural seed origin amounted to 7%. From 2001 to 2016, the total area of oak forests in the study region decreased by nearly 7,000 hectares. The analysis of literature sources allowed identifying numerous factors, which have the greatest influence on the emergence, liveability, and growth of natural regeneration of pedunculated oak. Only 20% of the investigated oak stands were found to have a sufficient amount of oak regeneration. For the implementation of sustainable forest management, activities should be aimed at optimizing the age structure of oak forests and growing natural forests from seeds.

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“…Modern forests exist in areas of northern Iran and adjacent Azerbaijan, but the botanical composition of these plant communities is very different from the ancient forests. The extant forests sometimes contain a few conifers, but the dominant components are angiosperms, particularly Fagus (Beech), Carpinus (Hornbeam), Fraxinus (Ash), Quercus (Oak)and a host of other broadleaved trees [36,37].…”

Section: Paleoecology Paleogeography and Paleoclimatementioning

confidence: 99%

Neogene Tree Trunk Fossils from the Meshgin Shahr Area, Northwest Iran

Mustoe

Abbassi

Hosseini³

et al. 2020

Geosciences

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In 2016, an extensive fossil forest was discovered near Meshgin Shahr, northwest Iran. Silicified tree trunks occur in Miocene fluvial sediments and at multiple stratigraphic levels within a 27-m thick sequence of Pleistocene volcaniclastics. The Miocene trunks likely represent stream transport. Pleistocene examples originated during repeated eruptive events when volcaniclastic sediments buried a standing forest. The site, informally named Meshgin Shahr Fossil Forest, was registered in 2017 as a national natural monument by the Iranian Cultural, Handicraft and Tourism Organization. To date, 16 fossilized trunks have been found, all but one of them representing gymnosperms. The ancient coniferous forest was very different from modern forests in Iran and adjacent Azerbaijan, a result of climatic changes that were principally caused by the demise of the Paratethys Sea and by rain shadow effects caused by the uplift of the Alborz and Zagros mountain ranges. X-ray diffraction patterns reveal that woods from the fossil forest contain three types of silica: opal-CT, pure quartz, and a mixture of opal-CT and quartz. In addition, optical photomicrographs show the abundant presence of amorphous opal-A. Mineralogic variations occur among different fossil trees and within a single trunk. These silica polymorphs resulted from a combination of processes: silica minerals precipitated in multiple episodes under differing geochemical conditions and the diagenetic transformation of an opaline parent material.

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Beech forests of Azerbaijan: The modern condition, age structure and regeneration

Cited by 4 publications

References 2 publications

Long-term transformation of submontane spruce-beech forests in the Jizerské hory Mts.: dynamics of natural regeneration

Long-term transformation of submontane spruce-beech forests in the Jizerské hory Mts.: dynamics of natural regeneration

Ukrainian plain oak forests and their natural regeneration

Neogene Tree Trunk Fossils from the Meshgin Shahr Area, Northwest Iran

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