Vladimir Andreyevich Usol’tsev

Russian Academy of Sciences | RAS · Botanical Garden

Under conditions of a changing climate, the relevance of assessing the full carbon pool of all components of forest ecosystems increases, not only of the living aboveground and underground parts, but also of litter, large detritus, soils, etc. There are numerous estimates of the phytomass of the aboveground part of forest trees and stands, both tak...

The assessment of the carbon storage capacity of forests has reached the global level, and the assessment of greenhouse gas absorption at carbon landfills is relevant. The authors have developed and published three author's databases on the biological productivity of Eurasian forests. It is shown that for databases, correct algorithms of alternativ...

Abstract Forest ecosystems are an essential part of the global carbon cycle and constitute a large fraction of the storage of terrestrial carbon. However, climate change may induce shifts in temperature and precipitation. These changes in temperature and precipitation have pronounced consequences for forest growth and carbon sequestration potential...

The latitudinal diversity gradient (LDG) is one of the most recognized global patterns of species richness exhibited across a wide range of taxa. Numerous hypotheses have been proposed in the past two centuries to explain LDG, but rigorous tests of the drivers of LDGs have been limited by a lack of high-quality global species richness data. Here we...

The assessment of the carbon storage capacity of forests is now reaching the global level, and the assessment of greenhouse gas absorption at carbon landfills is relevant. The authors have developed and published three author's databases on the biological productivity of Eurasian forests. An algorithm for estimating the incoming part of the carbon...

Data capturing multiple axes of tree size and shape, such as a tree's stem diameter, height and crown size, underpin a wide range of ecological research - from developing and testing theory on forest structure and dynamics, to estimating forest carbon stocks and their uncertainties, and integrating remote sensing imagery into forest monitoring prog...

Based on the generated database of 413 sample plots with definitions of stand biomass of the genus Populus spp. in Eurasia, from France to Japan and southern China, statistically significant changes in the structure of forest stand biomass were found with shifts in winter temperatures and average annual precipitation. When analyzing the reaction of...

Although forest ecosystems play an essential role in climate stabilization, current climatic shifts might cause striking changes in their biological productivity, which, in turn, affects the biosphere function of forests. Studies of the relationship between the biomass of trees and stands and hydrothermal indicators (temperature and precipitation)...

Current climate changes caused by greenhouse gas emissions alter landscape and environmental conditions, increase instability in many ecosystems, and increase the global role of forest cover. We attempted to model Quercus spp. single-tree biomass using the data from 500 sample trees distributed along the trans-Eurasian hydrothermal gradients. Today...

Qualimetry of aboveground and underground biomass of trees is an integral part of studies of biological productivity and carbon depositing capacity of forest cover, necessary for the correct assessment of the carbon cycle in its spatial gradients and in relation to climate change. The great bulk of carbon is deposited in tree stems and largely depe...

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 incre...

Based on the generated database of 413 and 490 plots of biomass of Populus spp. and Betula spp. in Eurasia, statistically significant changes in the structure of forest stand biomass were found with shifts in January temperatures and average annual precipitation. When analyzing harvest data, the propeller-shaped biomass patterns in the gradients of...

Forest ecosystems are sinks of atmospheric carbon and maintain annual temperature. On the other hand, climate change entails changes in all the biota structures and functions, including forest cover and biomass. Temperature and precipitation are the main deterministic factors in species biomass change. Therefore, we compared the biomass of Betula s...

Forest ecosystems play an essential role in climate stabilization, and the study of influence of climate change on their biomass and carbon depositing is of paramount importance. The objective of this study was (a) to verify the operation of the law of the limiting factor at the transcontinental level when modeling changes in the biomass of trees a...

Forest ecosystems play an essential role in climate stabilization, and the study of their capabilities in this aspect is of paramount importance. On the other hand, the current climatic shifts cause changes in their biological productivity, which, in turn, affects the biosphere function of forests. The study of the relationship between the biomass...

Over the past two decades, active airborne laser sensing technology has been intensively used to scan the forest cover, providing such morphometric indicators of trees as the width and projection area of the crown, the height of the tree. The author’s database of harvest data of 1550 model trees of genus Picea spp. of Eurasia is used in the work. A...

Current scenarios of the consequences of global warming stimulate research on the carbon-depositing capacity of vegetation cover. The stem is the main part of the tree biomass, and the accuracy of its volume assessment determines the possibility of correct monitoring and forecasting of forest resources. In the Russian forest management system, will...

Wood qualimetry database for Eurasian forests is compiled for the first time, and the prospects its use are shown. The analysis of the problem of quali-metric estimation of tree phytomass as raw materials in industrial production and in breeding programs is given. The possibilities of qualimetric assessment of wood by laser sensing are shown.

Based on the generated database of 413 sample plots with definitions of stand biomass of the genus spp. in Eurasia, Populus statistically significant changes in the structure of forest stand biomass were with shifts in winter temperatures and average annual precipitation. When analyzing the reaction of the structure of the biomass of the genus to t...

In the context of growing global urbanization and climate fluctuations, understanding the development of forest ecosystems in terms of their ability to remove atmospheric carbon is of increasing interest. Its content in the atmosphere continues to increase due to the burning of fossil fuels and deforestation. Airborne laser scanning technology has...

Usoltsev, V.A. Qualimetry of forest tree biomass: density and dry matter content : monograph / V.A. Usoltsev, I.S. Tsepordey ; Ural State Forest Engineering University, Botanical Garden of Ural Branch of RAS. – Yekaterinburg, 2020. In the vast sea of exponentially growing information, it is important to identify and justify promising directions, sc...

Forest ecosystems, as sinks of atmospheric carbon, play an important role in reducing greenhouse gas release and preventing air temperatures from rising. Simultaneously, climate change entails changes in forest cover. We describe the change of Betula spp. stand biomass (tha ⁻¹ ) along the trans-Eurasian gradients of rainfall and temperature using t...

Background The main pool of publications on this topic is related to the assessment of possible changes in vegetation growth under the influence of climate, but few of them actually took account the impacts of global change on species composition and morphological (taxational) structure, so led to an unanswered question, how the biological producti...

Based on a generated database of 413 sample plots, with definitions of stand biomass of the genus Populus spp. in Eurasia, from France to Japan and southern China, statistically significant changes in the structure of forest stand biomass were found, with shifts in winter temperatures and average annual precipitation. When analyzing the reaction of...

Today, estimating of biological productivity or carbon-depositing ability of forests is going on the global level, and its increase is one of the major factors of climate stabilization. In recent years, two trends in the harmonization of allometric models of tree biomass have been developing. The first of them is related to ensuring the additivity...

The aim of current study was to develop a generic pseudo-allometric model of the biomass structure of larch (Larix spp.) trees growing in Eurasia, and to assess the impacts of temperature and precipitation. It was assumed that this model will create a prerequisite for predicting changes in the structure of the tree biomass of the genus Larix spp. u...

The latitudinal herbivory hypothesis (LHH) predicts that plant losses to herbivores decrease from low to high latitudes. Although the LHH is a community‐level hypothesis, it has been rarely tested with data on community‐wide herbivory, i.e. the percentage of annual production of foliar biomass consumed by insects from all plant species at a given s...

Usoltsev V.А., Kovyazin V.F., Urazova А.F., Bornikov А.V., Chasovskikh V.P. Biomass structure of Picea-Abies forest ecosystems in pollution gradient near copper plant on the Сentral Ural. Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii, 2019, is. 230, pp. 19–35 (in Russian with English summary). DOI: 10.21266/2079-4304.2019.230.19-35 Известия...

Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research sp...

Abstract. In the gradient of pollution from the Karabash copper smelter in the Southern Urals (55° 29’ N, 60° 13’ E) in predominantly pure Scots pine and white birch stands, 12 and 34 sample plots are established, respectively, on which 42 and 56 model trees are taken, respectively, by stem diameter. The pollution gradient is expressed by the toxic...

This paper, aims to calculate the various remote sensing based models namely multiple linear regression (MLR), k-Nearest Neighbor (k-NN), bagging (Bagging) and random forest (RF); that were established using 9 vegetation index and three terrain variables. Five indicators of correlation coefficient (COR), mean absolute error (MAE), root mean squared...

Climate change, especially modified courses of temperature and precipitation, has a significant impact on forest functioning and productivity. Moreover, some alterations in tree biomass allocation (e.g. root to shoot ratio, foliage to wood parts) might be expected in these changing ecological conditions. Therefore, we attempted to model fir stand b...

The first attempt of modeling changes in additive component composition of biomass of Larix sp. communities on the Trans-Eurasian hydrothermal gradients based on regional peculiarities of age and morphology of the forests is attempted. The increase of all biomass components of the tree layer with increasing temperature at the constant precipitation...

Since ancient times, climate change has largely determined the fate of human civilisation, which was related mainly to changes in the structure and habitats of forest cover. In the context of current climate change, one must know the capabilities of forests to stabilise the climate by increasing biomass and carbon-depositing abilities. For this pur...

2019, The Author(s), under exclusive licence to Springer Nature Limited. In this Letter, the middle initial of author G. J. Nabuurs was omitted, and he should have been associated with an additional affiliation: ‘Forest Ecology and Forest Management Group, Wageningen University and Research, Wageningen, The Netherlands’ (now added as affiliation 18...

A spatially explicit global map of tree symbioses with nitrogen-fixing bacteria and mycorrhizal fungi reveals that climate variables are the primary drivers of the distribution of different types of symbiosis.

Modelling forest biomass sensitive to climate change is fulfilled at the levels as forest stands and single-trees, but mostly on a local or regional level, often without regard to the age, morphology of the forest stands and species composition. With this, it does not provide additive component composition, according to which the total of biomass c...

1 Modeling the additive allometric of stand biomass of Larix sp. for Eurasia Vladimir Аndreevich Usoltsev1, 2, Seyed Omid Reza Shobairi2*, Viktor Petrovich Chasovskikh2 1Botanical Garden, Russian Academy of Sciences, Ural Branch, 8 Marta 202a St, Yekaterinburg, 620144 Russian Federation 2Ural State Forest Engineering University, Sibirskii Trakt 37...

Abstract For the main tree species in North America, Europe, and Japan, a number of thousands of allometric equations for single-tree biomass estimation using mostly tree height and stem diameter at breast height are designed. An innovative airborne laser method of the forest canopy sensing allows to process online a number of morphological indices...

The analysis of the biomass of larch (genus Larix spp.) trees on the total component composition based on regression equations having the additive biomass structure. Two trends of changes in the tree biomass structure are revealed: due to the mean January temperature and due to the mean annual precipitation. It was shown for the first time that bot...

When using the unique in terms of the volume of database on the level of a single-tree of the genus Betula sp., the trans-Eurasian additive allometric model of biomass of trees for Eurasian birch forests is developed for the first time, and thereby the combined problem of model additivity and generality is solved. The additive model of tree biomass...

For the first time in Russian literature the problem of harmonizing allometric models of forest biomass components (stem, branches, foliage, roots) on the levels of tree and forest stand by means of ensuring the principle of their additivity has been solved. Allometric models are designed using two unique volume of the databases on harvest biomass...

V.А. Usoltsev, М.P. Voronov, S.O.R. Shobairi, J.A. Dar, К.V. Kolchin, V.P.Chasovskikh, E.V. Markovskaya COMPARATIVE ANALYSIS OF ORDINARY AND ADDITIVE MODELS OF COMPONENT COMPOSITION OF TREE AND FOREST BIOMASS (ON THE EXAMPLE OF PICEA AND ABIES SP.) Key words: Picea sp. and Abies sp., equations additivity, biosphere role of forests, biomass of trees...

V.A. Usoltsev CALL OF THE ABYSS* (to the 90th anniversary of the death of the great Russian scientist-cosmist Vladi-mir Mikhailovich Bekhterev) Key words: the identity of the V.M. Bekhterev, energy concept of the Universe, "world energy", the problem of death and immortality, the mysteries of the brain, tactile-visual substitution, anticipating eve...

V.А. Usoltsev, S.O.R. Shobairi, J.A. Dar, V.P.Chasovskikh, E.V. Markovskaya PROBLEMS OF ESTIMATING FOREST BIOPRODUCTIVITY IN THE ASPECT OF BIOGEOGRAPHY: 1) META-ANALYSIS AS A WAY OF GENERALIZING THE RESULTS OF INDEPENDENT RESEARCHES Key words: biosphere role of forests, trees and forest biomass, allometric model, synthesis of independent studies,...

V.А. Usoltsev, S.O.R. Shobairi, J.A. Dar, V.P.Chasovskikh, E.V. Markovskaya DESIGNING REGIONAL REGRESSION MODELS TO ESTIMATING THE STRUCTURE OF SINGLE TREE BIOMASS OF FOREST SPECIES IN EURASIA Key words: tree biomass, regression modeling, forest-forming species, ecoregions, Eurasia, dummy variables. When using the materials for the first time co...

On possibilities for application of generic and regional allometric models when estimating spruce tree biomass V. A. Usolts ev, K. V. Kolchin, V. A. Azarenok Keywords: Picea L., allometric models, tree biomass, sample plots, regional differences, standard errors, biases. Forests play an important role in reducing the amount of greenhouse gases in...

Transcontinental Eurasian dependences of biomass fractional composition of trees of forest-forming species, taking into account regional differences of trees by age, height, stem diameter, and volume, as well as stand density are reported for the first time. The biomass of all 50-year-old birch tree components decreases monotonically from the North...

For the first time the trans-Eurasian additive allometric mixed-effects model of tree biomass components (stems, branches, needles and roots) is designed using the database unique in terms of its volume in a number of 900 model trees of five species of Picea spp. taken on sample plots within species from natural habitats in Eurasia. The problem of...

1 Abstract For the main tree species in North America, Europe, and Japan, a number of thousands of allometric equations for single‐tree biomass estimation using mostly tree height and stem diameter at breast height are designed. An innovative airborne laser method of the forest canopy sensing allows to process online a number of morphological indic...

On the basis of the compiled database in a number of 3020 sample plots with determinations of forest biomass of two-needled pines (subgenus Pinus) on the territory of Eurasia from Great Britain to southern China and Japan statistically significant transcontinental gradients of stem, roots, above-ground and total biomass are established. In the dire...

V.А. Usoltsev, I.S. Tsepordey, S.O.R. Shobairi, J.A. Dar, V.P.Chasovskikh ADDITIVE ALLOMETRIC MODELS OF TREE AND STAND BIOMASS OF TWO-NEEDLED PINES AS A BASIS OF REGIONAL TAXATION STANDARDS FOR EURASIA. Key words: subgenus Pinus L., equations additivity, biosphere role of forests, biomass of trees and forests, allometric models, sample plots, biolo...

V.А. Usoltsev, S.O.R. Shobairi, J.A. Dar, I.S. Tsepordey, V.P.Chasovskikh, K.V. Kolchin PROBLEMS OF ESTIMATING FOREST BIOLOGICAL PRODUCTIVITY IN THE ASPECT OF BIOGEOGRAPHY: 2) MIXED-EFFECTS MODELS. Key words: tree biomass, allometric model, meta-analysis, mixed-type model, dummy variable model. Analysis of designing peculiarities of mixed allometr...

V.А. Usoltsev, I.S. Tsepordey, V.P. Chasovskikh, A.A. Osmirko. ADDITIVE REGIONAL MODELS OF TREE AND STAND BIOMASS FOR EURASIA. MESSAGE 3: GENUS Populus sp. Key words: genus Populus sp., equations additivity, biosphere role of forests, biomass of trees and forests, allometric models, sample plots, biological productivity, transcontinental tables of...

V.А. Usoltsev, I.S. Tsepordey, V.P. Chasovskikh, A.A. Osmirko. ADDITIVE REGIONAL MODELS OF TREE AND STAND BIOMASS FOR EURASIA. MESSAGE 4: GENUS Quercus sp. Key words: genus Quercus sp., equations additivity, biosphere role of forests, bio-mass of trees and forests, allometric models, sample plots, biological productivity, transcon-tinental tables...

V.А. Usoltsev, I.S. Tsepordey, V.P. Chasovskikh, A.A. Osmirko ADDITIVE REGIONAL MODELS OF TREE AND STAND BIOMASS FOR EURASIA. MESSAGE 1: GENUS Larix sp. Key words: genus Larix Mill., equations additivity, biosphere role of forests, biomass of trees and forests, allometric models, sample plots, biological productivity, transcontinental tables of b...

V.А. Usoltsev, I.S. Tsepordey, V.P. Chasovskikh, A.A. Osmirko ADDITIVE REGIONAL MODELS OF TREE AND STAND BIOMASS FOR EURASIA. MESSAGE 2: GENUS Betula sp. Key words: genus Betula sp., equations additivity, biosphere role of forests, biomass of trees and forests, allometric models, sample plots, biological productivity, transcontinental tables of b...

– When using the unique in terms of the volume of database on the level of a single-tree of the genus Betula sp., the trans-Eurasian additive allometric model of biomass of trees for Eurasian birch forests is developed for the first time, and thereby the combined problem of model additivity and generality is solved. The additive model of tree bioma...