scholarly journals The formation of herbage cover in forty-year-old plantation of black locust on the reclaimed dump in the Western Donbass

2019 ◽  
Vol 30 (2) ◽  
pp. 80-84 ◽  
Author(s):  
O. M. Masiuk ◽  
E. S. Spekhovа
Keyword(s):  
Black Locust ◽  
Growth Conditions ◽  
Forest Growth ◽  
Anthropogenic Factors ◽  
Soil Conditions ◽  
Typical Chernozem ◽  
Reclaimed Land ◽  
Number Of Species ◽  
First Case ◽  
Reclaimed Dump

The purpose of this paper is to study the formation of herbage cover in forty-year-old plantation of black locust (Robinia pseudoacacia L.), which has been growing under various forest growth conditions of artificial edaphotopes, which differed in stratigraphy and dumping depth on the reclaimed dump in the Western Donbass. The dump consisted of «empty» carefully planned mine rock; on its surface one-, two- and three-tiered structures of reclaimed land have been artificially formed. The maximum number of species in grass canopy of the black locust plantations has been recorded on technosol with typical chernozem. The formation of the grass canopy in plantations growing on technosol, consisted only of mine rock, the number of species depended on the power of edaphotope: with a decrease in dumping, a decrease in plant species has been observed. All studied variants are dominated by perennials. Under more favorable soil conditions, (variants 1 and 2) plants without vegetative movement dominate. With a decrease in the depth of dumping, the percentage of plants with slight vegetative movement increases. The representatives of plants with vegetative movement can be found under all forest growth conditions created on reclaimed lands. A specific trait of lithosol (variants 2, 3, 4) is an increase in mesoxerophytes, xerophytes and oligamegatrophs with a decrease in the power of dumping. Heliophytes predominate on studied variants with chernozem and loam with a dumping of one meter. Species partially demanding light have a significant advantage with the decrease in the power of dumping on lithosol variants with depth less than 0.6–0.3 meters. Among the coenomorphs, the dominance of ruderal and steppe complexes have been revealed. In the first case it is explained by the influence of anthropogenic factors (fire), –followed by the first stage of the restoration, namely colonization by weed plants; in the second case, it is caused by the influence of surrounding phytocenosis of undisturbed land and presence of herbal plants seeds from fertile soil level in pedosoil, which set the direction of succession towards the formation of zonal communities. Meadow and psammophytic coenotypes involved in the formation of flora indicate different types of forest growth conditions created by artificial soils.

scholarly journals Impact of forest growth conditions on the wood density: the case of Amur Region

2018 ◽  
Vol 60 (4) ◽  
pp. 292-298
Author(s):  
Natalia A. Romanova ◽  
Alexander B. Zhirnov ◽  
Natalia A. Yust ◽  
Xu Fucheng
Keyword(s):  
Wood Density ◽  
Far East ◽  
Growth Conditions ◽  
Amur Region ◽  
Forest Growth ◽  
Far East Of Russia ◽  
Density Determination ◽  
The Far East ◽  
First Time

Abstract The problem of determining the dependence of the chainsaw on the density of wood, substantiation of effective options for the number of chainsaws in the assortment and whiplash method of logging is quite relevant. In the Far East of Russia, in particular, in the Amur region, the forest growth conditions are different from the western ones, and therefore, the properties of the wood differ from the generally accepted ones. The article describes forest growth conditions that influence the properties of the wood in areas of the Amur region. Using the method of density determination, the density of larch, pine and birch were studied for first time in the areas of the region. The dependence of the density on humidity, age, species, season of the year and the area of growth was found out. The results of the research showed that under humidity of 70%, the density of larch was 1088.99 kg/m3, it was 919.8 kg/m3 for pine and it was for birch 915.9 kg/m3.

scholarly journals The impact of soil and climatic factors on forest growth

2016 ◽  
Vol 5 (1-2) ◽  
pp. 19-25
Author(s):  
Kitti Balog ◽  
András Szabó ◽  
János Rásó
Keyword(s):  
Plant Growth ◽  
Fine Particles ◽  
Black Locust ◽  
Climatic Factors ◽  
Calculated Data ◽  
Aridity Index ◽  
Vegetation Period ◽  
Forest Growth ◽  
Humus Layer ◽  
The Impact

This preliminary study reveals the relations between the forest growth (annual dendromass increment; ADMinc - as dependent variable) and some important soil factors, which have effect on plant growth, such as: groundwater level (GWL), groundwater composition (GWC), plant available water capacity (PAWC), depth of humus layer, texture (hyi) and pH of the soil, moreover the maximum concentration (MAX) of salt and CaCCb and the depth of its MAX in the soil profile. 17 plantations (Poplar, Common oak and Black locust) are included in the analysis investigated all over the Great Hungarian Plain. Correlation profile of the above parameters was created explaining that two abiotic parameters limit plant growth: if GWL is deeper than 5 m and if HCO3 concentration in groundwater is high (above 15 meq/L). Within the tested range (0.17 - 2.23 mS/cm for electrical conductivity (EC) and 0.5 /sand/ - 4.21 /clay loam/ for hyi), the higher magnitude of EC results in higher ADMinc and the higher hyi (higher proportion of fine soil particles) leads to higher ADMinc The positive relationship of ADMinc with EC suggests good nutrient supply of the soil, while the higher proportion of fine particles refers to better water management properties. Thickness of humus layer is an important soil factor: compared to shallow humus layer, deep one increases ADMinc exponentially. In case of Black locust, PAWC is the substantial factor for growing, unlike Poplar, whose growth depends on groundwater uptake (GWU). This phenomenon originates from the differences between the individual needs of the tree species and differences in root morphology. Merely 4 sampling plots were equipped with meteorological stations, thus the number of climatic parameter data were not enough for statistical analysis. So data for all 17 plots were collected from literature and a general, regionally calculated data were applied (mean rainfall in the vegetation period and aridity index). There was no significant correlation between climatic parameters and ADMinc Further studies and more field investigations are needed in order to clarify the results.

scholarly journals Analysis of trophic structure of forest flora in the Oril River valley

2017 ◽  
Vol 18 (3-4) ◽  
pp. 37-50
Author(s):  
B. A. Baranovsky ◽  
I. A. Ivanko ◽  
A. V. Kotovych ◽  
L. A. Karmyzova ◽  
N. O. Roschina
Keyword(s):  
Plant Species ◽  
Forest Ecosystems ◽  
Black Locust ◽  
Vascular Plant ◽  
River Valley ◽  
Forest Vegetation ◽  
Current Status ◽  
Soil Conditions ◽  
Salix Alba ◽  
Common Oak

Biodiversity is important for maintaining of forest ecosystems functioning and in their resistance to anthropo-climatic challenges. Assessment of species diversity and species ecomorphic analysis is the basis for determining their current status, rational use and protection. At the end of the nineteenth century, Belgard A. L. (1950) in his system of ectomorphs using terminology presented by Dekandol (1956) and Warming (1903), had proposed a «trophomorph» category that reflected species relation to soil richness. Analysis of trophomorphs reflects diversity of soil conditions in different biotopes within forest ecosystems. The article gives an analysis on vascular plant trophomorphs distribution in various forest biotopes of Oril river valley. Flora and vegetation surveys in forests of Oril river valley were carried out by A. L. Belgard and T. F. Kirichenko since the 30s of the 20th century. The latest data on forest vegetation state within the Oril river valley were given in the works of Y. Gamulja and V. Manyuk. Generalized bioecological analysis of flora Oril river valley was represented in the monograph of B. Baranovsky, V. Maniuk, I. Ivanko, L. Karmyzova «Flora analysis of the Oril National Park». As is known, edaphic conditions of plant habitats in a first place are determined by soil fertility depending on the plant nutrients availability. Soddy-forest soil on sandy terrace of Oril river valley has a relatively low content of humus and total nitrogen: 2 and 0.04 %. Under these conditions, pine phytocenoses were ocсurred that represented exclusively by artificial plantings. Soils in the depressed area of Oril river floodplain are much richer in humus and nitrogen content (10 and 0.37 %). Here, arboreal and shrubby vegetation is represented by communities with common oak. On the second terrace of Oril river valley, forest vegetation is represented by artificial pine forests. Microcenoses with black locust, amorpha and willow occurred on elevated areas of sandy terrace (arena). In the depressed area of the arena, microcenoses with aspen and birch, aspen, Tatarian maple, amorpha, black locust were occurred additionally to pine communities. In the Oril floodplain, native arboreal and shrubby vegetation is represented mainly by communities with common oak. In depressed areas of the floodplain, microcenoses with white poplar, black poplar, aspen, Tatarian maple, amorpha, willow (Salix alba, S. fragilis), osiery (Salix cinerea, S. triandra),  and alder are fragmentarily occurred. In conditions of elevated areas of the floodplain, 196 vascular plants species were found, and 105 species in depressed areas. On the second terrace, 38 plant species grow on the elevated areas, and 54 species on the depressed ones. Flora includes 45 adventive plant species. In depressed floodplain areas, oligotrophs are represented by 7 species, mesotrophs by 126 species, megatrophs by 50 species, and in elevated areas: 7, 126 and 25 species, respectively. In depressed areas of arena oligotrophs are represented by 4 species, mesotrophs by 29 species, and megatrophs by 11, elevated areas: 7 and 21 species respectively, and megatrophs were absent.

scholarly journals Damage to black locust leaves (Robinia pseudoacacia L.) by the black locust gall midge (Obolodiplosis robiniae) (Haldeman, 1847) in the Włoszczowa-Jędrzejów Protected Landscape Area - research on strengthening and developing knowledge and awareness in environmental education

2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Jolanta Bąk-Badowska ◽  
Ilona Żeber-Dzikowska ◽  
Barbara Wodecka ◽  
Mariusz Gietka ◽  
Jarosław Chmielewski
Keyword(s):  
Nature Conservation ◽  
Environmental Education ◽  
Black Locust ◽  
Gall Midge ◽  
Robinia Pseudoacacia ◽  
Academic Community ◽  
Anthropogenic Factors ◽  
Research Areas ◽  
Robinia Pseudoacacia L ◽  
Developing Knowledge

Abstract The prepared article by the team of authors aims to show research in the field of strengthening and developing knowledge and awareness from environmental education in the community of nature conservation services and the academic community. This paper is the result of research conducted in 2014–2015, in the Włoszczowa-Jędrzejów Protected Landscape Area, in the Świętokrzyskie Province. The material for the study was acacia robinia (Robinia pseudoacacia L.) leaves collected on two research areas, differentiated due to the influence of anthropogenic factors. As a result of the study, 5,000 black locust leaves were collected, 65% of which were found to be damaged. Research stands under the influence of strong anthropopressure were characterised by a higher number of lesions on leaves.

scholarly journals Selection of promising black locust (Robinia pseudoacacia L.) cultivars in Hungary

2017 ◽  
Vol 63 (No. 8) ◽  
pp. 339-343
Author(s):  
Rédei Károly ◽  
Csiha Imre ◽  
Rásó János ◽  
Keserű Zsolt
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Soil Conditions ◽  
Brown Forest Soil ◽  
Stem Form ◽  
Climate Change Effects ◽  
Selection Programme ◽  
Yield Production ◽  
Robinia Pseudoacacia L ◽  
Selection Of

In Hungary the black locust (Robinia pseudoacacia Linnaeus) is one of the most important exotic stand-forming tree species growing mostly under unfavourable ecological conditions. Considering the climate change effects its importance is increasing also in many other countries. As a result of a selection programme several black locust cultivars have been improved for setting up cultivar trials. In the paper four black locust cultivars were evaluated in Central Hungary under arid hydrological and brown forest soil conditions. Significant differences (P < 5%) were found in height, DBH, mean tree volume and average stem form value (SFV). At the age of 35 years the cultivar “R.p. Jászkiséri” appeared to be the most promising one for yield production and “R.p. Zalai” and “R.p. Nyírségi” for SFV.

THE INFLUENCE OF ENVIRONMENTAL FACTORS ON THE CROP AND QUALITY OF FIBER FLAX

2020 ◽  
Vol 5 (86) ◽  
pp. 3-10
Author(s):  
V.G. Chernikov ◽  
◽  
R.A. Rostovtsev ◽  
N.A. Kudryavtsev ◽  
I.V. Uschapovsky ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Raw Materials ◽  
Great Influence ◽  
Quality Parameters ◽  
Anthropogenic Factors ◽  
Soil Conditions ◽  
Factors Affecting ◽  
Fiber Flax ◽  
Yield And Quality

The formation of fiber flax yield and quality parameters depends on many soil-climatic, breedinggenetic, as well as anthropogenic factors. The quality of flax fiber is a combination of a number of features and properties that depend on the varietal characteristics of plants, the conditions of their cultivation, technologies for harvesting and straw retting, as well as on the processing modes of raw materials. During plant vegetation (90-130 days) many factors such as soil conditions (pH 4.8-5.5, humus 1.8-2.5%, P2O5 and K2O – 150-200 and 100-200 mg/kg, respectively) and the area of plant nutrition (15-30 million seeds/ha), temperature regime (the sum of active temperatures 1000-1800ºC), water supplying (400-430 units of water mass to create 1 unit of dry matter) and insolation (the arrival of FAR during the growing season 20-25 kcal / cm²), contamination of weeds (more than 60 annual and perennial species) and pests (more than 200 types of fungal, bacterial and viral diseases), features of phytosanitary measures (more than 50 chemicals) and agrotechnologic manners (Federal Register of technologies for the production of crop products) have a great influence on the quality of flax raw materials and can be a limit factor. Environmentally hazardous pollution of air, water and soil - the main components for the production of fiber flax – strongly affects the yield and quality of flax products. The development of waste-free environmentally friendly technologies for the cultivation, harvesting and processing of flax is an urgent task of scientific support of the industry. The main environmental factors affecting the yield and quality of fiber flax are discussed in the article.

scholarly journals Estimation of change in forest height growth

2017 ◽  
Vol 67 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Mait Lang ◽  
Tauri Arumäe ◽  
Diana Laarmann ◽  
Andres Kiviste
Keyword(s):  
Laser Scanning ◽  
Growth Conditions ◽  
Height Growth ◽  
Forest Growth ◽  
Forest Stands ◽  
Difference Model ◽  
Permanent Sample Plots ◽  
Airborne Laser ◽  
Forest Height ◽  
Algebraic Difference

AbstractForest height increment rate is related to the forest growth conditions. Data bases of previous forest inventories contain information about forest heightage relationship on large number of forest stands while repeated measurements of permanent sample plots provide an excellent reference for comparison. Repeated airborne laser scanning of forest stands is an additional source for the estimation of change in forest structure. In this study, height growth of middle-aged and older forest stands for about 10 year period was compared to an algebraic difference model on permanent sample plots (66) and for a sample of forest stands with repeated airborne laser scanning data (61). The model was based on a large dataset of forest inventory records from the period of 1984–1993. Statistically significant increased forest height growth was found in permanent sample plots based on tree height measurements (9 cm yr−1) as well in stands with repeated laser scanning data (4.5 cm yr−1) in South-East Estonia compared to the algebraic difference model. The difference between the two data sets was explained by their mean age and site class, but the increased forest height growth compared to the old forest inventory data indicates improved growth conditions of forests in the test area. The results hint also that empirical data-based forest growth models need to be updated to avoid biased growth estimates.

scholarly journals Changes of Taxonomic Diversity of Soils’ Mеasopopulation in the Range of Environmental Conditions of the Northern Macroslope of Khamar-Daban

2020 ◽  
Vol 34 ◽  
pp. 55-66
Author(s):  
E. P. Bessolitsyna ◽  
Keyword(s):  
Anthropogenic Impacts ◽  
Taxonomic Diversity ◽  
Main Trend ◽  
Anthropogenic Factors ◽  
Species Number ◽  
Soil Conditions ◽  
Anthropogenic Pressure ◽  
Ecological Analysis ◽  
High Rise ◽  
Landscape Ecological

Landscape-ecological analysis of taxonomic diversity and structure of soil invertebrates’ community in the geosystems of the Hamar-Daban Region was carried out on the main levels: local (biogeocenotic), topological (facies) and regional. The paper considers regularities of transformation of communities’ structure in landscape-zonal range under the influence of natural conditions: phytocenotic (peculiarities of vegetation), edaphical and climatic (hydrothermal regime of the soil) and anthropogenic factors. On the models groups: Сarabidae, Staphylinidae, Elateridae, Formicidae altitudinal changes of community' structure have been traced; in all landscape-high-rise complexes (in species composition and abundance of species) was revealed forest preference. The main trend of changes in taxonomic diversity of invertebrate’s communities is a decrease in the species number in the gradient of an increase of climate aridity, and strengthening of the hypothermal character and anthropogenic pressure. Peculiarities of structures invertebrate’s communities and their changes due to the climate change and anthropogenic impacts can serve as one of diagnostic criteria of soil conditions and can be used for estimation of landscapes’ transformation and monitoring.

scholarly journals Practice of Geobotanical Indication of Forest Growth Conditions in the Steppe and Wooded Steppe Ecotone in Central Mongolia

2020 ◽  
Vol 21 (2) ◽  
pp. 10-21
Author(s):  
Petr Gunin ◽  
Sergey Bazha ◽  
Inessa Miklyaeva ◽  
Tatiana Karimova ◽  
Igor Petukhov ◽  
...  
Keyword(s):  
Growth Conditions ◽  
Forest Growth ◽  
Central Mongolia
Sign in / Sign up

Export Citation Format

Share Document