Photosynthesis, Mineral Nutrition and Productivity of Decidious and Coniferous Dendroflora Species in the Central Part of the Russian Plain
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2024, Vol 4, Issue 4
Abstract
An ecological and physiological retrospective transformation of the data from the dry mass tables obtained by V.A. Usoltsev has been carried out for 7 coniferous and deciduous species (Larix sukaczewii, Picea abies, Pinus sylvestris, Betula alba, Quercus robur, Tilia cordata and Fraxinus excelsior) in the central part of the Russian Plain. In the age range from 5â20 to 80â200 years, the indicators of net photosynthetic productivity, net mineral productivity, net primary production, carbon sequestration, free oxygen emission and biological productivity have been determined at the organism level. When establishing these parameters, plants have been considered from the standpoint of ecology and the structure of a modular organism. The calculation of net mineral productivity has been carried out according to I.A. Muromtsev and V.M. Lebedev, and the net productivity of photosynthesis has been calculated according to A.A. Nichiporovich. A decrease in all physiological parameters with age has been recorded at a simultaneous increase in the ratio of root to photosynthetic potential (as an adaptive response to a decrease in the availability of nutrients). In all species, upon reaching the age of 20â30 years, a sharp decrease in the absorption activity of the roots has been revealed, which has stabilized at an extremely low level by the age of 50â60 years. The relationship between the listed plant indicators and their age for the studied species has been negative, and the relationship between mineral and biological productivity has been characterized as highly positive. In comparable age periods (30, 60 and 90 years), the studied species differed in nitrogen absorption by the root system by 21.7â28.0 times, in net photosynthetic productivity â by 4.4â7.0 times, in the value of net primary production â by 1.8â6.2 times, in nitrogen absorption â by 3.2â 6.1 times, in carbon sequestration and free oxygen emission â by 1.8â6.2 times, and in the mass of the whole plant â by 2.4â3.9 times. According to the accumulated dry mass, tree species at 90 years of age have been arranged in the following descending order: oak, spruce, larch, pine, linden, ash and birch.
Authors and Affiliations
Valentin M. Lebedev, Evgenij V. Lebedev
Keywords
Related Articles
- EP ID EP742365
- DOI 10.37482/0536-1036-2024-4-81-91
- Views 11
- Downloads 0
First Experience of Paulownia Bellissia® Cultivation in an Agroforestry System in the Czech Republic
Paulownia spp. comes from South-East Asia, where there is a tradition of its cultivation. Social pressure, in favour of the use of renewable sources of energy and sustainable agriculture, is on the rise. In this context,...
Morphological Analysis and Optimization of Technological Process for Rip Cutting of Round Timber
Coniferous sawn timber is extensively used in construction. However, the dimensional and qualitative composition of the round timber for lumber production has recently deteriorated significantly. The number of sawn logs...
Characteristics of Wood Substance Formation during Growing of Scots Pine Seedlings Using Chemical Markers
Currently, seedlings of the main silvicultural species are grown in greenhouses by the technology of ball-rooted planting material production. The process features raise the issue of the resulting planting material susta...
Changes in Density and Species Composition of Undergrowth at Different Distances from the Forest Edges in Postagrogenic Areas
The work is devoted to the study of changes in density and species diversity of undergrowth at different distances from the forest edges on postagrogenic lands, as well as factors affecting the distribution of undergrowt...
Comparative Assessment of Valuation Indicators of Siberian Larch (Larix sibirica) Forest Plantations when Introduction into the Nizhny Novgorod Region
The practice of using Siberian larch in artificial reforestation on the territory of the Nizhny Novgorod region in the forests of the Bogorodsk district is considered. It should be noted that the relevance of the develop...