Radial Growth Of Scots Pine Research Articles

The effect of climate change on the radial growth of Pinus sylvestris l. and Quercus robur l. in the stands of Kharkiv green zone

Purpose. To identify the characteristics of the reaction of the radial growth of Scots pine (Pinus Sylvestris L.) and Scots oak (Quercus robur L.) to climate change in the forest-steppe zone of Ukraine. Methods. Dendrochronological, dendroclimatological, and statistical methods are applied. COFECHA and ARSTAN programs were used. Results. The study was conducted in 100-year-old stands of English oak and Scots pine in the Southern Forestry (Left-bank Forest-steppe). The reaction of the radial growth of trees to climate changes was compared for 1960-1987 and 1988-2016. For the dendroclimatic analysis, the de Martonne hydrothermal indices, the Selyaninov hydrothermal coefficient, the forest aridity index, and the O1 hydrothermal coefficient were used. Relative humidity indicators, which are derived from temperature and precipitation, were also used. It was found that in the second period, the sensitivity of the reaction of the radial growth of trees to climate variations increased, which indicates a certain weakening of the stands due to the increase in temperature. Dendroclimatic analysis of Pinus sylvestris L. and Quercus robur L. showed that when comparing the response of the radial growth of trees to climate variations in 1960-1987 and 1988-2016, the condition of both pine and oak weakened, as evidenced by an increase in significant coefficients correlations between growth indices and climatic factors. Conclusions. Pine was found to be more sensitive to climate change compared to oak. At the same time, these species of these trees at this stage were able to adapt to climate change, as evidenced by tree-ring chronologies, which show stable growth during 2010-2016.

Is there Chornobyl nuclear accident signature in Scots pine radial growth and its climate sensitivity?

The extensive radioactive fallout resulting from the 1986 Chornobyl accident caused tree death near the nuclear power plant and perturbed trees communities throughout the whole Chornobyl exclusion zone. Thirty years into the post-accident period, the radiation continues to exert its fatal effects on the surviving trees. However, to what extent the continuous multi-decadal radiation exposure has affected the radial tree growth and its sensitivity to climate variation remains unascertained. In this comparative study, we measure the Scots pine radial growth and quantify its response to climate at two sites along the western track of the nuclear fallout that received significantly different doses of radiation in 1986. The common features of the two sites allow us to disentangle and intercompare the effects of sub-lethal and moderate radiation doses on the pine's growth and climatic sensitivity. We extend the response function analysis by making the first use of the Full-Duration at Half-Maximum FDHM method in dendrochronology and apply the double-moving window approach to detect the main patterns of the growth-to-climate relationships and their temporal evolution. The stand exposed to sub-lethal radiation shows a significant radial growth reduction in 1986 with a deflection period of one year. The stand exposed to moderate radiation, in contrast, demonstrates no significant decrease in growth either in 1986 or in the following years. Beyond the radiation effects, the moving response function and FDHM enabled us to detect several mutual patterns in the growth-to-climate relationships, which are seemingly unrelated to the nuclear accident. To advance our predictive understanding of the response of forest ecosystems to a massive radioactive contamination, future studies should include quantitative wood anatomy techniques.

The effects of pine mistletoe (Viscum album subsp. austriacum) on the growth of Scots pine and Crimean pine in Turkey

AbstractIn this study, the effect of pine mistletoe (Viscum album subsp. austriacum) on basal area increment of Crimean pine and Scots pine was investigated. Dendrochronological data were collected from 223 (71 uninfected and 152 infected) Crimean pines and 195 (77 uninfected and 118 infected) Scots pines located in Kastamonu province of Turkey in 2014. Infected sample trees were classified as light, moderate or severe infection levels. Growth trends and basal area increment loses were compared between uninfected and infected trees for the periods of the last 10, 20 and 30 years. In addition, infection status of forest stands was investigated using temporary sample plots; 27 plots in Crimean pine stands and 26 plots in Scots pine. Results demonstrated that basal area increments were negatively affected by pine mistletoe for both species. Mean basal area increment losses of infected trees for the last decade were determined as 24% for Scots pine and 26% for Crimean pine. Basal area increment losses varied by infection levels (light, moderate and severe) as follows: 25%, 20% and 28% for Scots pines and 20%, 32% and 9% for Crimean pines. Scots pine stands were more severely infected by pine mistletoe than Crimean pine stands. There were negative correlations between number of infected trees and stand density for both species, while positive correlation was detected between the number of infected trees and mean diameter for Scots pine. The results of this study indicate that the pine mistletoe infection has negative effect on radial growth of Scots pine and Crimean pine trees. The results can be an important contribution to the forest management and protection activities in mistletoe‐infected stands.

Dependence of <i>Pinus sylvestris</i> (Pinaceae) Radial Growth on Meteorological Conditions and Aerotechnogenic Pollution (Data on the North-West of the Murmansk Region)

Abstract—We studied the influence of meteorological factors and aerotechnogenic pollution on the radial growth of Scots pine (Pinus sylvestris L.) depending on the distance from the mining and metallurgical combine “Pechenganickel” (Nikel, Murmansk region). According to the content of the main polluting elements (S, Ni and Cu) in the forest litter, we identified three zones of the pollution gradient – control, buffer and impact zones. We found a significant weakening of pine stands in the impact zone due to the integrated effect of – long-term exposure to pollution (since the 1970s) and unfavorable weather events in the mid-1980s. As the emission decreased over the period 1988–2018, we observed the significant increase (up to 44%) in the radial increment of P. sylvestris in the impact zone and no meaningful changes in control and buffer ones. Further, the radial increment of trees in the impact zone reached and even exceeded the values in control conditions, despite the relatively high age of the studied trees. This indicated the high adaptive capacity of P. sylvestris.

Радиальный рост сосны обыкновенной в условиях северной тайги

The research aims at assessing the influence of daytime and nighttime meteorological parameters (air temperature, dew point, relative air humidity, wind velocity and amount of precipitation) on the pine radial growth in the northern taiga subzone in blueberry, lingonberry and bush-sphagnum forest types. The study was carried out in the Arkhangelsk region near the Pinega settlement (northern taiga subzone). Sample plots were laid out in areas with different forest types specific for this territory. A total of 63 core samples were taken from 7 of the most representative sites. Meteorological parameters for 2008–2015 were collected by a digital weather station WMR918 H (Huger GmbH, Germany) located in the research area and operating in the monitoring mode. In blueberry pine forest, we have detected a high correlation of radial growth with air temperature and dew point in July (0.80–0.88), and even higher correlation with the night values of these parameters (0.90). Both direct and inverse correlations were found with wind velocities in May, June, and September: from 0.77 to 0.78 and from –0.84 to –0.79. An inverse correlation was observed in one of the sample plots with precipitation of May and June. Dependencies similar to the blueberry pine forest have been found in the lingonberry pine forest. A correlation with relative air humidity was found in the shrub-sphagnum forest type. Direct and inverse correlations of radial growth with wind velocity indicate its different influence on physiological processes in the leaf blade by cooling it and enhancing transpiration. Significant variability in the correlation in the blueberry forest type is probably caused by differences in the inventory parameters of the studied stands, and may also be a feature of blueberry pine forests. Generally, pine in the blueberry, lingonberry and shrub-sphagnum forest types has a similar response to the variability of meteorological factors, the main of which is the air temperature regime. Acknowledgments: The research was carried out within the framework of the state assignment No. 122011300380-5 of the N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences. For citation: Neverov N.A., Chistova Z.B., Mineev A.L. Radial Growth of Scots Pine in the Northern Taiga. Lesnoy Zhurnal = Russian Forestry Journal, 2022, no. 6, pp. 193–205. (In Russ.). https://doi.org/10.37482/0536-1036-2022-6-193-205

Radial growth dynamics in Scots pine forests of the Yalutorovsky forest district of Tyumen region

The investigation of radial growth may be performed in different aspects. The indication significance ofthis parameter is great, and the potential of its using has not fully exhausted. Different features of radialgrowth variability in Scots pine stands from Tyumen region (West Siberia, Russia) are present at the article.Chronologies from the Russian Federal Agency Forestry Database of the Dendrochronological InformationCharacteristics were used for investigation. Climatic influences on radial growth of Scots pine (Pinus sylvestrisL.) in different forests sites were established. As a result of dendroclimatic analysis, it was found that thedistribution of reliable values of correlation coefficients by month in the current year and in the previousyear is specific for different chronologies, which reflectsthe specifics of the environmental conditions ofgrowth in the sample areas. There is drought dependent climatic signal in the chronologies. The usingmethodological approaches have perspectives for investigations in the sphere of forest science.

Radial growth of Scots pine in urban and rural populations of Ekaterinburg megalopolis

Eleven stands of Scots pine (Pinus sylvestris L.) from the city of Ekaterinburg and its surroundings were sampled and analyzed using dendrochronological methods to detect the effects of climate, biotic and anthropogenic factors on the annual growth of trees. Tree-ring chronologies were developed for six sites within the city and for five control sites. All chronologies were highly and positively correlated before the 1940s. However, after this period, there was a significant decrease in the correlation among chronologies from urban and rural sites. Divergence lasted about 20 years. This firstly has an anthropogenic cause, mainly due to the evacuation in 1941 of more than 60 industrial factories to Sverdlovsk (now Ekaterinburg), which generated a significant increase in air pollution. Environmental pollution seems to negatively affect tree growth. In the early 1950s, trees in the region also suffered from severe droughts. The results of climate and historical data analysis suggest that the trees on urban sites were weakened by both climate and air pollution factors, which led to a massive nun moth (Lymantria monacha L.) infestation of trees. Defoliation led to a drastic reduction in tree-ring width and, in some cases, to the complete loss of annual rings. The recovery period lasted 10–15 years on average. Rural populations were much less affected by the insect outbreak. After urban populations of pine recovered in the 1960s, radial growth of urban and rural populations became synchronized again.

Regional Features of the Radial Growth of Scots Pine under Climatic Conditions of the Forest-Steppe and Steppe Zones of Eastern Transbaikalia According to Multiparameter Tree-Ring Chronologies

Regional Features of the Radial Growth of Scots Pine under Climatic Conditions of the Forest-Steppe and Steppe Zones of Eastern Transbaikalia According to Multiparameter Tree-Ring Chronologies

Regional features of the radial growth of Scots pine in the climatic conditions of the forest-steppe and steppe zones of Eastern Transbaikalia according to multiparameter tree-ring chronologies

Regional features of the radial growth of Scots pine in the climatic conditions of the forest-steppe and steppe zones of Eastern Transbaikalia according to multiparameter tree-ring chronologies

THE EFFECT OF CLIMATE ON RADIAL GROWTH OF SCOTS PINE (Pinus sylvestris L.) IN A COASTAL MIXED STAND IN KAPISUYU, BARTIN, TURKEY

Scots pine is geographically the most widespread pine species in the world, and it shows different growth responses to climate and environmental factors in diverse ecological sites. We studied both the stand dynamics and climate-growth relationships of scots pine in isolated coastal stand (recently found) in the Western Black Sea Region of Turkey. The homogeneity index of this stand has varied between 1.92–3.56. In growth-ring analyses, after cross-dating of individual chronologies, COFECHA and ARSTAN software were used respectively for chronology quality control and standardization (detrend). In this way, a 58-year-long chronology (1959-2016) of scots pine was constructed. In addition, DENDROCLIM software was used for investigating scots pine’s radial growth-climate relationships. Mean sensitivity changed from 0.163 to 0.331, with a mean of 0.183. Mean correlation among trees and signal to noise ratio were 0.389 and 7.012 respectively. In terms of the effect of precipitation on the radial growth of scots pine in this site, the correlation coefficients were 0.43 (p<0.05) for December of the previous year and 0.41 (p<0.05) for July of the current year. For all the other months, precipitation had a non-significant effect. As for the maximum and mean air temperature, the correlation coefficients were 0.36 (p<0.05) and 0.40 (p<0.05) for February, and 0.40 (p<0.05) and 0.42 (p<0.05) for March, respectively. However, on the radial growth, while the maximum temperature in August had a negative effect (r= -0.26; p<0.05), minimum temperatures in February, March and July had a positive effect (r= 0.39, 0.40 and 0.34 respectively; p<0.05).

THE EFFECT OF CLIMATE ON THE RADIAL GROWTH OF SCOTS PINE (PINUS SYLVESTRIS L.) IN A COASTAL MIXED STAND IN KAPISUYU, BARTIN, TURKEY

Scots pine is geographically the most widespread pine species in the world, and it shows different growth responses to climate and environmental factors in diverse ecological sites. We studied both the stand dynamics and climate-growth relationships of Scots pine in isolated coastal stand (recently found) in the Western Black Sea Region of Turkey. The homogeneity index of this stand has varied between 1.92-3.56. In growth-ring analyses, after cross-dating of individual chronologies, COFECHA and ARSTAN software were used respectively for chronology quality control and standardization (detrend). In this way, a 58-year-long chronology (1959-2016) of Scots pine was constructed. In addition, DENDROCLIM software was used for investigating Scots pine’s radial growth-climate relationships. Mean sensitivity changed from 0.163 to 0.331, with a mean of 0.183. Mean correlation among trees and signal to noise ratio were 0.389 and 7.012 respectively. In terms of the effect of precipitation on the radial growth of Scots pine in this site, the correlation coefficients were 0.43 (p<0.05) for December of the previous year and 0.41 (p<0.05) for July of the current year. For all the other months, precipitation had a non-significant effect. As for the maximum and mean air temperature, the correlation coefficients were 0.36 (p<0.05) and 0.40 (p<0.05) for February, and 0.40 (p<0.05) and 0.42 (p<0.05) for March, respectively. However, on the radial growth, while the maximum temperature in August had a negative effect (r= -0.26; p<0.05), minimum temperatures in February, March and July had a positive effect (r= 0.39, 0.40 and 0.34 respectively; p<0.05). It means while higher rains in July and higher temperatures in the late winter-early spring have caused the wider growth rings, the narrower growth rings have been formed in the years with higher maximum temperatures in August in the isolated coastal site of Scots pine.

Condition and Stability of Plantations in the Zonal Ecotone of the Forest and Steppe of the Southern Urals

In the conditions of the zonal ecotone of the forest and steppe of the Southern Cis-Urals, the current state of forest ecosystems is characterized, the radial growth of Scots pine is considered as an indicator of the sustainability of plantations. Forest phytocenoses of the Southern Cis-Urals have class 2 and 3 of biological resistance, unfavorable in sanitary terms, which leads to the appearance of permanent foci of mass reproduction of insect pests of leaves and needles. These pests are actually indicators of the sustainability of the forest ecosystem. The plantations are especially strongly weakened in the zone of medium, strong and maximum anthropogenic impact on the environment. Differences in the radial growth of Scots pine are observed in the zonal ecotone of the forest and steppe. The dynamics of the radial growth of Scots pine in the Orenburg forestry indicates a decrease in the indicator over the years, which is interconnected with the dry climate of the steppe zone and partly the technogenic influence of industrial enterprises in Orenburg. The dynamics of the radial growth of Scots pine crops in the national park "Buzuluksky bor", on the contrary, increases over the years, which, in our opinion, is associated with more humid growing conditions in recent years. Comparing the average radial growth of Scots pine in the zonal ecotone of the forest and steppe, one can note higher rates in the forest zone of the national park "Buzuluksky bor" and lower rates in the steppe zone. The main method of collecting information on the state of forest cenoses was a field survey on temporary test areas, which were laid according to standard methods.

Radial growth of Scots pine and Norway spruce stands as an indicator of soil and environmental conditions

The study presents an analysis of radial growth of Scots pine and Norway spruce trees growing on drained soils formed on varved clays at the sample sites of the Lisino Experimental Forestry (Lisino). Based on dendrochronological studies in Lisino, it has been found that the radial growth of Scots pine and Norway spruce is a sensitive indicator of changes in the soil water regime, climate, and phytocenotic relationships. On the basis of the character of tree-ring width growth, the growth charts allowed distinguishing zones with close to average growth values, as well as with increased and decreased values of radial growth. The cyclical pattern of tree ring width is well expressed in the successive change of zones. The availability of dendrochronological research materials with precise spatial and temporal reference makes it possible to organize monitoring of radial growth of trees as an indicator of changes in climate and habitat conditions.

Radial Growth of Scots Pine (Pinus sylvestris L.) in Lichen Pine Forests and Woodlands of the Northern Taiga

The vitality structure of forest stands and the annual radial increment of Scots pine trees of different vital state categories growing in the northern taiga middle-aged lichen pine forests and woodlands of the Kola Peninsula have been studied. This study has shown a prevalence (60–75%) of weakened and strongly weakened trees in the Scots pine forests and woodlands; the fraction of healthy trees does not exceed 15–20% (30% in terms of the stand volume). In the age range of 30–85 years, the radial growth of Scots pine trees in the communities studied decreases 1.5- to 3.5-fold, and the annual basal area increases 1.5- to 5-fold. Differentiation of trees of differing vitality in relation to the radial increment is clearly manifested starting from 50 years after the fire. The ratio between the annual basal areas of healthy, weakened, strongly weakened, and dying trees in pine forests and woodlands is 8 : 5 : 2.5 : 1 and 11 : 5.5 : 3.5 : 1, respectively. The difference between the resource potentials of pine woodlands and forests is 1 : 1.6 and is manifested at the level of communities, but not at the level of individuals.

Effects of radiation on radial growth of Scots pine in areas highly affected by the Chernobyl accident

The effects of radiation on radial growth of Scots pine (Pinus sylvestris L.) affected by the Chernobyl accident were studied at five sites with different deposition levels. The study sites were chosen along a high gradient of depositions at the distance of a few hundred meters in the forests with similar forest characteristics. Air dose rates varied at the sites from the background values up to 30 μGy h−1 as of December 1, 2016. Scots pine trees exposed to sub-lethal doses of 8.6–13.2 Gy at the “Red Forest” site did not demonstrate deviations in formation of annual rings 30 years after the Chernobyl accident compared to trees with lower doses and control trees. Variation with time in annual rings thickness did reveal that the effect of radiation in trees growing at the sites with different contamination not detectable in 1986 and 1987. Conversely, the effects were clear observed in a later period in 1989–1991, i.e. 3–5 years after the accident. Until 2000, there were statistically significant differences in the annual rings growth rates of Scots pine trees exposed to external absorbed dose rates of 4.4–6.7 mGy h−1 as estimated for June 1, 1986 (or 19.5–30.0 μGy h−1 as of December 1, 2016) compared with the trees of the other sites studied. The results comply with the conclusions from research with acute pine exposure conducted in the Kyshtym area in 1975–1984.

РАДИАЛЬНЫЙ ПРИРОСТ СОСНЫ ОБЫКНОВЕННОЙ НА ЗОНАЛЬНОМ ЭКОТОНЕ ЛЕСА И СТЕПИ ЮЖНОГО ПРЕДУРАЛЬЯ

On the zonal ecotone of forest and steppe, there are differences in the radial growth of Scots pine. The dynamics of radial growth of Scots pine in the Orenburg forestry state institution indicates a decrease in the indicator over the years, which is associated with a more arid climate of the steppe zone and partially man-made influence of industrial enterprises in Orenburg. On the contrary, the dynamics of radial growth of Scots pine crops in the Buzuluksky Bor NP increases over the years, which, in our opinion, is due to wetter growing conditions in recent years. Comparing the average radial growth of Scots pine in the zonal ecotone of the forest and steppe, we can note higher rates in the forest zone of the NP "Buzuluksky Bor" and lower – in the steppe zone.

Reconstruction of Precipitation by Radial Growth of Scots Pine in the Southern Urals

This work presents the results of analysis of the correlation between radial growth of Scots pine (Pinus sylvestris L.) and the amount of spring–summer precipitation on the Zilair Plateau (Southern Urals). The amount of precipitation from 1776 to 2015 is reconstructed on the basis of the close correlation (r = 0.78) between the growth of late pine wood and the amount of May–June precipitation. The entire interpreted time range includes periods with amounts of precipitation less than average (1888–1893, 1906–1912, 1952–1959, 2008–2012) and wet periods (1779–1783, 1827–1831, 1834–1838, 1878–1883). The longest wet periods are typical of the first half of the time range interpreted (the end of the 18th century and the 19th century), whereas the driest periods are characteristic of the second half (the end of the 19th century, the beginning of the 20th century, the 1950s, and the beginning of the 21st century).

Influence of climatic factors on the radial growth of scots pine in the Leningrad region

Influence of climatic factors on the radial growth of scots pine in the Leningrad region

Influence of climate on radial growth of scots pine (Pinus Sylvestris L.) In different habitats of Meshchera lowland

This paper is devoted to the patterns of radial growth of Scots pine (Pinus sylvestris L.) in various topoecological conditions of the Meshchera lowland (Ryazan region, the East European plain). The generalized tree-ring chronologies are constructed for 16 habitats differing in features of a relief of a day surface and a bedrock surface. Despite the relatively low-contrast relief of Meshchera, the average radial pine increment within the study area differs by 2.5 times (1.53.9 mm per year). The correlation and cluster analyses revealed that the key factor influencing the width of annual tree rings of pine is the amount of the available soil moisture. Its surplus (in wetlands) and deficiency (in conditions of sandy outliers) negatively affects the radial pine increment. It is established that in the waterlogged habitats positive correlation of the radial pine increment with temperature and negative with precipitation of autumn of the previous year is observed. The positive correlation of the radial increment with precipitation of autumn, May and with winter temperature is typical for a pine from arid habitats. The negative relationship between the pines growth and amount of precipitation and river discharge may occur with a lag of 14 years in conditions of wetlands. The positive relationship of the radial pine increment with the integral parameters of the current years moisture is more significant in conditions of relatively high hydrodynamics (for example, in conditions of sandy outliers).

Climate Factors of Vapour Pressure and Diurnal Temperature Influenced on Radial Growth of Scots Pine in Northeastern Mongolia

To find out the optimum conditions of growth in Scots pine (Pinus sylvestris var. mongolica), we analyzed the radial growth response relationship to climate factors in boreal forests. We present growth response from 3-sites Mg (Mangui), KYH (kheyihe), NM (Nanmu) from central Daxing’an mountains. Drought observed in 1920s-1930s years. We analyzed growth response from 1920-2016. Results specified that growth of scots pine did not vary with variation in sites. We measure the influence of vapour pressure and mean maximum and mean minimum diurnal temperature have been shown by correlations of different growing seasons. Most of warm temperature during June to September and growth of Scots pine show a significantly positive increase during winter season. Overall inconsistency in climate conditions of Daxing’an mountains due to Atlantic and Pacific oceans, affects the Asian moon soon and alternatively changes the local temperature and precipitation and vapour pressure and increases the drought severity.