Estimation of Vegetation on the Forage Lands of Gornyy Altai

Zvereva, G. K.; Syeva, S. Ia.; Karnaukhova, N. A.

doi:10.31677/2072-6724-2019-50-1-116-125

Cited by 4 publications

(1 citation statement)

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“…However, individual publications make it possible to evaluate the quantitative values of the yielding capacity of the communities under consideration in comparison with other meadows in the region. For meadows of the Priob forest-steppe in the Novosibirsk region (bordering the Tomsk region where the BEC is located), the reserves of above-ground phytomass with temporary conservation and light agricultural use are 420-530 g/m 2 [47]. This corresponds to the yielding capacity of both the background communities of the BEC territory and the experimental sites in the second year after a fire.…”

Section: Discussionmentioning

confidence: 95%

Fire as a Factor in the Dynamics of Meadow Vegetation: A Model Experiment in Western Siberia

Lednev,

Kasymov,

Semenkov

et al. 2024

Fire

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The state of meadow vegetation in areas with different ages of experimental spring burnout (from 1 to 12 years ago) was studied in the Tomsk region for 3 years. On experimental plots of 1 m2 and 100 m2 (small- and middle-scale levels, respectively), the dynamics of species richness, total projective cover of vegetation, and aboveground phytomass reserves were characterized, and the structure of communities was analyzed. It was revealed that a single fire in the spring significantly reduces species richness for small-scale plots and increases the total projective cover for middle-scale plots. Structural differences from control plots can be traced from 1 to 4 years for different characteristics. The effects of fire are more prominent for small-scale plots. To suppress tree growth and maintain the existence of meadows, grass fires seem to be a less effective practice than mowing. At the same time, the results obtained potentially allow us to consider prescribed burning as a tool for maintaining the stability of meadow plant communities in the south of Western Siberia, preventing them from becoming overgrown with tree undergrowth, in cases with a controlled frequency of burning and the use of appropriate fire safety measures.

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Section: Discussionmentioning

confidence: 95%

Fire as a Factor in the Dynamics of Meadow Vegetation: A Model Experiment in Western Siberia

Lednev,

Kasymov,

Semenkov

et al. 2024

Fire

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Medicago falcata L. Population State and Prospects for Use in North-Western Region

Abdushaeva

2024

BIO Web Conf.

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Meadows play an important role in maintaining the floristic diversity of regional floras. The phytocenotic allocation of the Medicago falcata L. population has not been sufficiently studied, as well as patterns of distribution of its units and unit groups, viability in a specific habitat under various anthropogenic influences. The growth and development of Medicago falcata L. populations under optimal conditions are becoming increasingly relevant and are promising in theoretical and applied aspects.The purpose is to study morphological characteristics and search for valuable forms of Medicago falcata L. to create varieties with high seed and feed productivity in the process of breeding work. The morphological characteristics of plants were studied depending on the age state and distribution of units in the territory they occupied. We have established that the total number of plants in the juvenile state in the population varies little from year to year, although the quantitative ratios of young plants of individual species can fluctuate significantly. This indicates that units in the juvenile state occupy a common ecological niche in the cenosis. The population of Medicago falcata L., growing in the Shelon meadow in the Soltsydistrict, differ in the methods of vegetation resumption, with numerous well-leafed shoots and high ecological plasticity. The formed meadow ecosystems depend not only on the natural conditions in their locations, but also on the influence of anthropogenic factors, which in turn affects the biogeocenosis (living organisms and their interaction with the environment) and, accordingly, the species composition of the meadow. There are rosette-free monocyclic vegetative and generative shoots, with a well-developed root system vertically and horizontally in the soil profile.

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Assessment of Natural Plant Communities through the Use of Remote Sensing Data of the Stavropol Territory Steppes

Ерошенко¹,

Lapenko²,

Сторчак³

et al. 2022

Engineering Technologies and Systems

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Introduction. The relevance of the study of steppe phytocenoses is caused by the unsatisfactory state of natural grass stands, namely a low level of biodiversity and a high degree of degradation. The aim of the work is to determine the features of the connection of the Earth remote sensing data with the state and degree of degradation of natural grass stands in unstable moistening zone and arid zone of the Stavropol Territory. The Earth remote sensing data with certain temporal and spatial resolutions make it possible to carry out almost continuous monitoring of the state of natural grass stands. Materials and Methods. The study of steppe phytocenoses was carried out in 2016–2020 on the ground at discount areas (100 m2) according to the requirements of methods generally accepted in phytocenology. Vegetation condition was assessed using the Earth remote sensing data based on the values of the Normalized Difference Vegetation Index. According to the satellite data, Normalized Difference Vegetation Index cartograms were constructed for each point of the study. Results. The proportion of polygons with a high degree of degradation is 18.8% of research objects located in the zone of unstable moistening and the proportion of polygons with an average degree of degradation is 37.5%, while in the arid zone 70.6 and 23.5%, respectively. In the zone of unstable moistening, the highest coefficients of rank correlation between the degradation degree and the area occupied by herbaceous vegetation with a certain value of the vegetation index are observed in the case if Normalized Difference Vegetation Index is in the range of 0.0–0.4, and in the arid zone 0.0–0.3 (at 0.01 significance level). Discussion and Conclusion. When using the Earth remote sensing data to assess the degree of degradation of steppe ecosystems of the Stavropol Territory, it is necessary to use regression models specific to various soil and climatic conditions.

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Estimation of Vegetation on the Forage Lands of Gornyy Altai

Cited by 4 publications

References 1 publication

Fire as a Factor in the Dynamics of Meadow Vegetation: A Model Experiment in Western Siberia

Fire as a Factor in the Dynamics of Meadow Vegetation: A Model Experiment in Western Siberia

Medicago falcata L. Population State and Prospects for Use in North-Western Region

Assessment of Natural Plant Communities through the Use of Remote Sensing Data of the Stavropol Territory Steppes

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