Untitled

Алексеев, А. С.; Soroka, Alesya R.

doi:10.1023/a:1020271629819

Cited by 5 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of this research will help to fill the information gap on the age dynamics of Scots pine radial growth for this region (Alekseev and Soroka 2002;Yarmishko 2015;Yarmishko et al 2017).…”

Section: Discussionmentioning

confidence: 90%

Radial growth of trees differing in their vitality in the middle-aged Scots pine forests in the Kola peninsula

Katjutin¹,

Stavrova²,

Горшков³

et al. 2020

Silva Fenn.

View full text Add to dashboard Cite

The research was carried out in unmanaged middle-aged (75â85 years) Northern taiga Scots pine ( L.) forests in the Kola peninsula. It was established that forests of green moss-lichen and green moss site types are characterised by a predominance (65â70% by stand volume) of moderately and strongly weakened trees. Trees of differing vitality have significant differences in annual increment. Healthy trees had a radial increment (RI) 70â75% greater than that of dying trees, and a basal area increment (BAI) 85â90% greater. The dynamics of the RI and BAI of Scots pine trees for the 70-year period (from 1945 to 2015) is different. The RI of all individuals in the communities studied decreases consistently. The decrease is expressed more strongly in green moss Scots pine forests (80â95% from 1945 to 2015) compared to green moss-lichen forests (60â80%); it manifests itself more in strongly weakened and dying individuals (75â95%) than in healthy and moderately weakened ones (60â80%). Annual basal area increment in green moss Scots pine forests increases by 45â65% from stand establishment until the trees are 25 to 35 years old and subsequently decreases by 50â80% to 70â80 years of age. In green moss-lichen pine forests the BAI of Scots pine remains rather stable in healthy and moderately weakened trees and decreases in strongly weakened and dying individuals by 45% and 75â80%, respectively throughout the studied period.Pinus sylvestris

show abstract

Section: Discussionmentioning

confidence: 90%

Radial growth of trees differing in their vitality in the middle-aged Scots pine forests in the Kola peninsula

Katjutin¹,

Stavrova²,

Горшков³

et al. 2020

Silva Fenn.

View full text Add to dashboard Cite

show abstract

“…For the obtained annual rings data analysis was used before developed special method aimed on removing of age trend from annual ring width data [1,6,7].…”

Section: Methodsmentioning

confidence: 99%

Long-Term Growth Trends Analysis of Norway Spruce Stands in Relation to Possible Climate Change: Case Study of Leningrad Region

Алексеев

Sharma²

2020

Lesnoy Zhurnal (Forestry Journal)

View full text Add to dashboard Cite

The Lisino training and experimental forest of the Saint-Petersburg State Forest Technical University was chosen as a study area. The forest is located in the central part of the Leningrad region and has a high level of protection as a forest of scientific and historical value. According to the official data, mean annual temperature in the region increased by 0.6 °C within 10 years as well as precipitation. The impact determination of changing climate conditions on Norway spruce trees growth was the aim of this study. Three most representative compartments dominated by Norway spruce (Picea abies (L.) Karst.) were selected for data collection. Core samples were taken by the Pressler increment borer from 107 dominant trees while climatic data were obtained from the nearest weather stations. Tree rings were measured and analyzed using WinDendro software while climate data were processed by Microsoft Excel. Tree ring data cover the time interval from 1848 to 2011, each ring was characterized by width, calendar year, age and diameter of the tree. Radial growth was analyzed within age and diameter classes. Annual rings widths were varied from 0.1 to 6 mm. There was a positive trend in age classes of 0-20, 21-40 and 41-60 years old. The growth was very slow in the age classes of 61-80, 81-100 and >100. Diameters are larger in the age classes of 20-40 and 41-60 as compare to the local diameter growth table which was developed in the 19th century. Diameters for age classes older than 41-60 years were less than prescribed by the diameter growth table. Annual rings width for all age classes also demonstrate cyclic dynamics, moreover, the decline in growth sometimes occurred in recent decades. Multiple regression was used for developing the response function of growth to changes in climatic conditions. There was revealed a high correlation (90 %) and low influence of vegetation period climate data on growth during 1848-2011 (0.08102 mm/°C and 0.00085 mm/mm). Likewise, analysis shows that growth is higher in young and middle-aged than mature and over mature stands. Overall, climate change impact has a positive effect on the radial growth of Norway spruce for the studied area, however, not for all age and diameter classes.

show abstract