Forest stand biomass of Picea spp.: an additive model that may be related to climate and civilisational changes

Usoltsev, Vladimir А.; Piernik, Agnieszka; Osmirko, Anna A.; Tsepordey, Ivan Stepanovich; Часовских, В. П.; Żukow, Walery

doi:10.2478/bog-2019-0029

Cited by 7 publications

(6 citation statements)

References 34 publications

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“…The problems of biodiversity (Mirkin et al, 2014;Sannikov et al, 2017;Ivanova, 2019) and forest productivity (Usoltsev et al, 2011(Usoltsev et al, , 2019Schepaschenko et al, 2017), ecology of individual species of woody plants ( Kalashnikova & Makhnev, 2013;Maiti et al, 2016;Sannikov et al, 2018), history of vegetation development (Panova & Antipina, 2016), reforestation and stand formation (Tantsyrev & Sannikov, 2008;Menshchikov et al, 2013;Fomin et al, 2015;Zalesova et al, 2019) have been actively discussed in the literature for the Ural Mountains, but our study on the adaptation of forest ecosystem vegetation to different moisture regimes is one of the first for taiga mountain forests in Russia. It has estimated the stability and trends of changing species composition and productivity when changing the moisture regime.…”

Section: Discussionmentioning

confidence: 97%

Influence of soil moisture regime on the species diversity and biomass of the herb layer of pine forests in the Ural Mountains

Ivanova

Zolotova

2020

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Adaptation of plant communities is an important factor for maintaining their functioning and stability in changing conditions. The aim of our research is study of the effect of soil moisture regime on the species richness and biomass of the herb layer for old-growth coniferous forests in the Ural Mountains (Russia). The research has been carried out between 57° 00'N; 60° 15''E and 57° 05'N; 60° 25'E. The studied area is part of the Zauralsky hilly piedmont province, the Southern boreal forest region. Sample plots (0.25 hectares) were laid in pine forests growing in habitats with different moisture regimes: insufficient, optimal (stable), and excessive. The research was conducted in 2010. To determine the herb layer productivity, 10-20 subplots 1x1 m in size were laid on each sample plot. Data analysis is based on the One-way ANOVA and species abundance distributions. It has been established that species richness in extreme (insufficient and excessive soil moisture regime (Cowberry pine forest and Pine forest with shrubs and sphagnum) and optimal (stable) soil moisture regime (Multi-herb pine forest) were found to vary significantly, with soil moisture regime being a statistically significant factor. By contrast, herb layer biomass is maintained fairly stable regardless of the soil moisture regimes. ANOVA showed no significant differences between pine forests growing under different soil moisture regimes. It has been found that biomass is maintained by increasing of the dominant species contribution to the overall biomass and increasing of the approximation function graph slope. At the same time, the parameter β of exponential and power approximating functions is increased and can be considered as an indicator of influencing on forest ecosystems and a measure of their adaptation to insufficient and excessive soil moisture. Thus, species abundance distributions can be used as method to measure the effects of factors that determine forest ecosystem composition and functioning.

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Section: Discussionmentioning

confidence: 97%

Influence of soil moisture regime on the species diversity and biomass of the herb layer of pine forests in the Ural Mountains

Ivanova

Zolotova

2020

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“…[20] Reaction of spruces (Usoltsev et al, 2019c) to the climate variables is similar to the response of birches only in part: if in warm regions (+10°C) with increasing precipitation, the productivity of spruce stands increases, then in cold regions it is minimal regardless of the level of precipitation, i.e. the limiting factor for spruce productivity is only the temperature.…”

Section: Discussionmentioning

confidence: 99%

Forest stand biomass and NPP models sensitive to winter tempera-ture and annual precipitation for Betula spp. in Eurasia

Usoltsev

Żukow

Tsepordey

et al. 2020

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Forest ecosystems, as sinks of atmospheric carbon, play an important role in reducing CO 2 emissions and preventing annual temperatures from rising. On the other hand, climate change entails changes in the structure and functions of all the biota, including forest cover. Therefore, we attempted to model Betula spp. ecosystem biomass and annual net primary production (NPP) (t ha-1) using the data from 650 forest stands for biomass, 245 for NPP and biomass, as well as climate data on the Trans-Eurasian hydrothermal gradients. The model involves regional peculiarities of age and morphology of the forests. It is found that the reaction of birch biomass and NPP structure on temperature and precipitation corresponds to the principle of limiting factors by Liebig-Shelford but in different proportions for different species. Since the minimum values of biomass and NPP occur in regions with minimum precipitation and minimum temperature, these two factors are limiting in terms of biomass and NPP of birches. The same phenomenon is typical for firs, partly typical for spruces and very differ for larches and pines. The development of such models for basic forestforming species grown in Eurasia will give possibility to predict any changes in the biological productivity of forest cover of Eurasia in relation to climate change.

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“…These climate maps were shown in our previous article (Usoltsev et al, 2022). The use of the maps of winter temperature instead of the average annual one was justified earlier (Usoltsev et al, 2019). As mentioned above, the PL value is related to the stem diameter.…”

Section: Methodsmentioning

confidence: 96%

The needle percentage in the leafy shoot biomass of Scots pine in climate gradients of Eurasia

Усольцев

Żukow

Tsepordey

2022

J Educ Health Sport

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The efficiency of using photosynthetically active radiation by trees largely depends on the architecture of the assimilation apparatus in their crown. It is known that an increase in the level of atmospheric pollution is accompanied, on the one hand, by an increase in the foliage density on the leafy shoot length, and on the other hand, by an increase in the transparency of the crown due to the expansion of the leafless inner part of the crown. On this basis, we assume that the foliage percentage of leafy shoots (PL) is a sensitive indicator of changes in growing conditions not only due to environmental pollution, but also in broader ecological aspects, in particular, in the geographical or climatic gradients of Eurasia. For this purpose, a database of empirical data has been formed in the amount of 558 model trees of Scots pine of natural and artificial origin from 6 regions of Northern Eurasia with a measured percentage of needle in the leafy shoot biomass. A regression model has been designed, in which the contributions of mensuration variables (tree age and stem diameter), climatic variables (temperature and precipitation) and the origin of stands (natural and artificial) to explain the variability of the desired PL indicator are 15, 53 and 30 %, respectively. It is concluded that with a decrease in annual precipitation from 600 to 300 mm, there is an increase in PL by 0.2..0.3% for every 10 mm of annual precipitation, both in natural stands and in plantations. When the January temperature decreases from 0°C to -20 °C, PL increases by 0.8...1.0% for each 1°C. Thus, the foliage percentage of leafy shoots of Scots pine is an indicator of changes in growing conditions in the climate gradients of Eurasia.

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Forest stand biomass of Picea spp.: an additive model that may be related to climate and civilisational changes

Cited by 7 publications

References 34 publications

Influence of soil moisture regime on the species diversity and biomass of the herb layer of pine forests in the Ural Mountains

Influence of soil moisture regime on the species diversity and biomass of the herb layer of pine forests in the Ural Mountains

Forest stand biomass and NPP models sensitive to winter tempera-ture and annual precipitation for Betula spp. in Eurasia

The needle percentage in the leafy shoot biomass of Scots pine in climate gradients of Eurasia

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