Scientific substantiation to update black alder plantation regeneration regulatory framework in russian steppe zone

10.12737/6549 ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. 147-154
Author(s):  
Турчина ◽  
Tatyana Turchina ◽  
Родин ◽  
Sergey Rodin
Keyword(s):  
Agricultural Practices ◽  
Steppe Zone ◽  
Scientific Basis ◽  
Protective Role ◽  
Regulatory Framework ◽  
Practical Implementation ◽  
Mixed Stands ◽  
Black Alder ◽  
Flowsheet Development ◽  
The Impact

Generalization of the experience of practical implementation of the current regulatory framework reforestation suggests that their use in the current version will not contribute to the conservation of plants, increase their productivity and protective role. There are no ways to restore black alder plantations, no standards for planting material and requirements of young animals, the area of which shall be charged to the lands is covered with forest vegetation. We analyzed the impact of agricultural practices, methods of creation, composition and density on survival, growth, productivity of plantations in the experience forest cultures sampling area (13 areas). The results of research were a scientific basis for the development of a regional process flowsheet development of silvicultural areas. In order to clarify and supplement certain provisions of the framework regulations of thinning, we analyzed the results of experimental logging, tasks of which are differentiated. Their effectiveness is determined by the rate of silvicultural stock recovery. In pure stands the optimal conditions for the development of trees at a young age are formed in high density, so thinning is necessary to start from thinnings. Mixed stands are characterized by low redox potential (recovery of the stock occurs only with a decrease the proportion of willow and intensity of cutting up to 20%) and lower total productivity (to 10.3-45.7% with a decrease in the proportion of willow and 45.7% - in its increase). Mode of logging in them should ensure the formation of pure stands. The regional experience of afforestation and the test results of different modes of thinning are the scientific basis for improving the existing “Reforestation regulations” and “Rules of forest tending”, and for the creation of a regional reforestation program.

Optimization of isolation and thinnings modes in the floodplain black alder forests

10.12737/6272 ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 84-98
Author(s):  
Турчина ◽  
Tatyana Turchina
Keyword(s):  
Average Diameter ◽  
Steppe Zone ◽  
Mixed Composition ◽  
Mixed Stands ◽  
Black Alder ◽  
Control Section ◽  
Crown Thinning ◽  
Cutting Intensity ◽  
Positive Effect ◽  
Cutting Modes

In the steppe zone of Russia there is a tendency of increasing the proportion of mixed stands in the structure of riparian black alder forests. In middle-aged and maturing stands they occupy 21-23 % of the area. For such plants regulations of forming mode are absent, and for planting in pure content - require adjustments. In order to justify the feasibility and optimal standards of thinning in pure and mixed stands of natural and artificial origin thinning and felling were hold with a range of cutting intensity from very mild to severe. In pure stands thinning with intensity of 18 % has positively impacted: after 20 years, the average diameter, the absolute completeness and stock is higher for 14 %, 12.5 % and 14 %, respectively. Moderately strong felling in forest plantations of mixed composition had a negative result: in 17 years the completeness and the stock are 68.5 % and 68.4 % from control section indicators. According to forecasts, recovery of indicators of control stands does not happen in 30 years. After the thinnings in pure stands plantations, where grassroots method was used, had a better taxation structure: after 20 years after felling stock of experimental section exceeds the benchmark by 10.3 %, the completeness of- 10.2 %. The result of applying the method of crown thinning is deterioration in the structure of plantations: completeness and the stock reached the targets at 83.1 and 80.0 %, respectively. Thinning in mixed stands on condition of targeted reduction of the share of related species have a positive effect both on the dynamics of restoration of forest indicators and the improvement of sanitary structure of planting. An analysis of the results revealed the most effective cutting modes of formation and proposed regulations for modes of thinning in plantations of black alder of floodplain ecotype in the steppe zone of Russia.

scholarly journals Impact of main tillage methods on weed infestation of crops in the winter maize, wheat, dried peas rotation

2021 ◽  
Vol 262 ◽  
pp. 01014
Author(s):  
Khasan Tarchokov ◽  
Magomed Chochaev ◽  
Julietta Tutukova
Keyword(s):  
Agricultural Practices ◽  
Steppe Zone ◽  
Climatic Conditions ◽  
Soil Treatment ◽  
Weed Suppression ◽  
Weed Plants ◽  
Cultivation Technology ◽  
The Republic ◽  
The Impact ◽  
Tillage Methods

The paper presents ways of suppressing weed plants, including a complex of agricultural practices aimed at reducing their harmful effects and further distribution. Many methods to control weed vegetation are known in the field cultivation technology. They differ in terms of the amount of expired costs and labor, economic and technical efficiency. As a result of our research, the impact of some tillage methods on the effectiveness of weed suppression on the main field crops in selected Kabardino-Balkaria natural climatic conditions is identified. The goal of the research is to determine the effectiveness of main tillage methods on the Ciscaucasian carbonate chernozems in different zones of the republic. In research conducted in 2015-2018 in the Kabardino-Balkaria steppe zone in crop rotation, with an alternation of maize-winter wheat-pea crops in the suppression of weed plants, a soil treatment system is allocated when the soil treatment on 12-14cm is combined with plowing to a depth of 25-28 cm with the use of related chemical herbicides of various spectrum of actions.

The Impact of L-Carnitine and Coenzyme Q10 as Protection Against Busulfan-Oxidative Stress in the Liver of Adult Rats

2020 ◽  
Vol 10 (5) ◽  
pp. 578-586
Author(s):  
Areeg M. Abdelrazek ◽  
Shimaa A. Haredy
Keyword(s):  
Oxidative Stress ◽  
Coenzyme Q10 ◽  
Protective Role ◽  
Albino Rats ◽  
Distilled Water ◽  
Negative Effects ◽  
Adult Rats ◽  
Stress Damage ◽  
The Impact ◽  
Liver Tissues

Background: Busulfan (Bu) is an anticancer drug with a variety of adverse effects for cancer patients. Oxidative stress has been considered as a common pathological mechanism and it has a key role in the initiation and progression of liver injury by Bu. Aim: The study aimed to evaluate the antioxidant impact of L-Carnitine and Coenzyme Q10 and their protective role against oxidative stress damage in liver tissues. Methods and Material: Thirty-six albino rats were divided equally into six groups. G1 (con), received I.P. injection of DMSO plus 1 ml of distilled water daily by oral gavages; G2 (Bu), received I.P. injection of Bu plus 1 ml of the distilled water daily; G3 (L-Car), received 1 ml of L-Car orally; G4 (Bu + L-Car) received I.P. injection of Bu plus 1 ml of L-Car, G5 (CoQ10) 1 ml of CoQ10 daily; and G6 (Bu + CoQ10) received I.P. injection of Bu plus 1 ml of CoQ10 daily. Results: The recent data showed that Bu induced significant (P<0.05) elevation in serum ALT, AST, liver GSSG, NO, MDA and 8-OHDG, while showing significant (P<0.05) decrease in liver GSH and ATP. On the other hand, L-Carnitine and Coenzyme Q10 ameliorated the negative effects prompted by Bu. Immunohistochemical expression of caspase-3 in liver tissues reported pathological alterations in Bu group while also showed significant recovery in L-Car more than CoQ10. Conclusion: L-Car, as well as CoQ10, can enhance the hepatotoxic effects of Bu by promoting energy production in oxidative phosphorylation process and by scavenging the free radicals.

scholarly journals Association of Genetic Polymorphisms in Oxidative Stress and Inflammation Pathways with Glaucoma Risk and Phenotype

2021 ◽  
Vol 10 (5) ◽  
pp. 1148
Author(s):  
Makedonka Atanasovska Velkovska ◽  
Katja Goričar ◽  
Tanja Blagus ◽  
Vita Dolžan ◽  
Barbara Cvenkel
Keyword(s):  
Oxidative Stress ◽  
Ocular Hypertension ◽  
Gene Deletion ◽  
Open Angle Glaucoma ◽  
Protective Role ◽  
Control Group ◽  
Nucleotide Polymorphisms ◽  
Gstm1 Gene ◽  
Stress Genes ◽  
The Impact

Oxidative stress and neuroinflammation are involved in the pathogenesis and progression of glaucoma. Our aim was to evaluate the impact of selected single-nucleotide polymorphisms in inflammation and oxidative stress genes on the risk of glaucoma, the patients’ clinical characteristics and the glaucoma phenotype. In total, 307 patients with primary open-angle glaucoma or ocular hypertension were enrolled. The control group included 339 healthy Slovenian blood donors. DNA was isolated from peripheral blood. Genotyping was performed for SOD2 rs4880, CAT rs1001179, GPX1 rs1050450, GSTP1 rs1695, GSTM1 gene deletion, GSTT1 gene deletion, IL1B rs1143623, IL1B rs16944, IL6 rs1800795 and TNF rs1800629. We found a nominally significant association of GSTM1 gene deletion with decreased risk of ocular hypertension and a protective role of IL1B rs16944 and IL6 rs1800629 in the risk of glaucoma. The CT and TT genotypes of GPX1 rs1050450 were significantly associated with advanced disease, lower intraocular pressure and a larger vertical cup–disc ratio. In conclusion, genetic variability in IL1B and IL6 may be associated with glaucoma risk, while GPX and TNF may be associated with the glaucoma phenotype. In the future, improved knowledge of these pathways has the potential for new strategies and personalised treatment of glaucoma.

scholarly journals Assessment of alternative land management practices using hydrological simulation and a decision support tool: Arborea agricultural region, Sardinia

2007 ◽  
Vol 11 (6) ◽  
pp. 1811-1823 ◽  
Author(s):  
P. Cau ◽  
C. Paniconi
Keyword(s):  
Decision Support ◽  
Land Management ◽  
Quantitative Methods ◽  
Management Practices ◽  
Water Movement ◽  
Agricultural Practices ◽  
Treated Wastewater ◽  
Hydrological Simulation ◽  
Support Tool ◽  
The Impact

Abstract. Quantifying the impact of land use on water supply and quality is a primary focus of environmental management. In this work we apply a semidistributed hydrological model (SWAT) to predict the impact of different land management practices on water and agricultural chemical yield over a long period of time for a study site situated in the Arborea region of central Sardinia, Italy. The physical processes associated with water movement, crop growth, and nutrient cycling are directly modeled by SWAT. The model simulations are used to identify indicators that reflect critical processes related to the integrity and sustainability of the ecosystem. Specifically we focus on stream quality and quantity indicators associated with anthropogenic and natural sources of pollution. A multicriteria decision support system is then used to develop the analysis matrix where water quality and quantity indicators for the rivers, lagoons, and soil are combined with socio-economic variables. The DSS is used to assess four options involving alternative watersheds designated for intensive agriculture and dairy farming and the use or not of treated wastewater for irrigation. Our analysis suggests that of the four options, the most widely acceptable consists in the transfer of intensive agricultural practices to the larger watershed, which is less vulnerable, in tandem with wastewater reuse, which rates highly due to water scarcity in this region of the Mediterranean. More generally, the work demonstrates how both qualitative and quantitative methods and information can assist decision making in complex settings.

scholarly journals Depletion of acetate-producing bacteria from the gut microbiota facilitates cognitive impairment through the gut-brain neural mechanism in diabetic mice

Microbiome ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Hong Zheng ◽  
Pengtao Xu ◽  
Qiaoying Jiang ◽  
Qingqing Xu ◽  
Yafei Zheng ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Gut Microbiota ◽  
Cognitive Functions ◽  
Neural Mechanism ◽  
Fecal Microbiota ◽  
Protective Role ◽  
Fecal Microbiota Transplant ◽  
Memory Impairments ◽  
The Impact

Abstract Background Modification of the gut microbiota has been reported to reduce the incidence of type 1 diabetes mellitus (T1D). We hypothesized that the gut microbiota shifts might also have an effect on cognitive functions in T1D. Herein we used a non-absorbable antibiotic vancomycin to modify the gut microbiota in streptozotocin (STZ)-induced T1D mice and studied the impact of microbial changes on cognitive performances in T1D mice and its potential gut-brain neural mechanism. Results We found that vancomycin exposure disrupted the gut microbiome, altered host metabolic phenotypes, and facilitated cognitive impairment in T1D mice. Long-term acetate deficiency due to depletion of acetate-producing bacteria resulted in the reduction of synaptophysin (SYP) in the hippocampus as well as learning and memory impairments. Exogenous acetate supplement or fecal microbiota transplant recovered hippocampal SYP level in vancomycin-treated T1D mice, and this effect was attenuated by vagal inhibition or vagotomy. Conclusions Our results demonstrate the protective role of microbiota metabolite acetate in cognitive functions and suggest long-term acetate deficiency as a risk factor of cognitive decline.

Nitrate transport in the chalk vadose zone in in Picardy (France)

2021 ◽  
pp. SP517-2020-164
Author(s):  
N. Surdyk ◽  
L. Gourcy ◽  
V. Bault ◽  
N. Baran
Keyword(s):  
Groundwater Quality ◽  
Vadose Zone ◽  
Nitrate Concentration ◽  
Agricultural Practices ◽  
Nitrate Transport ◽  
Transport Time ◽  
Major Question ◽  
Noticeable Effect ◽  
Fertiliser Application ◽  
The Impact

AbstractSince the 1980s, nitrate has been shown to be present in soils and the vadose zone of various types of geological materials years after fertiliser application. In chalk where the vadose zone is thick, nitrate storage can be considerable and its transport time toward groundwater can be lengthy.In this context, evaluation of the impact of changes in agricultural practices on groundwater quality remains a major question. Improvement of groundwater quality can in certain cases be greatly delayed after the implementation of environmental agricultural practices.The principal objective of this study is to improve our knowledge of when changes in agricultural practices will have a noticeable effect on groundwater quality.To meet this objective, nitrate concentration profiles were performed in agricultural plots in Picardy (France). A crop marker event was used to calculate the transport velocity of water and associated solutes. This method is useful when other tracers (as tritium or chlorine) cannot be used. Estimated velocities range from 0.51 to 0.54 m/year; these values are similar to those described in similar chalk aquifers.

EXPERIENCE OF DEVELOPED COUNTRIES OF THE WORLD ON REGULATION OF SPORTS AND HEALTH SPHERE AND PROMOTION OF ITS DEVELOPMENT

2021 ◽  
Vol 9 (1) ◽  
pp. 91-100
Author(s):  
Serhii Tsymbaliuk
Keyword(s):  
Comparative Analysis ◽  
Developed Countries ◽  
Scientific Basis ◽  
Organizational Models ◽  
Economic Role ◽  
The World ◽  
New Challenges ◽  
Developed World ◽  
The Impact

The purpose of the article is to study the experience of developed countries in the regulation of sports and health in order to stimulate its development and adaptation to new challenges and threats. In the course of the research the methods of theoretical and comparative analysis were used to reveal the peculiarities of the American and European models of sports and health man-agement; statistical and graphical - to determine the economic role and trends in the sports and health industry in the world, the impact of the pandemic on income from sports. The article develops organizational and economic approaches to intensify the development of sports and recreation. Certain features of organizational models of management, sports legislation, financ-ing, possible tools to stimulate the development of sports and health in the developed world form a scientific basis for substantiating ways to intensify this area.

scholarly journals Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams?

2007 ◽  
Vol 64 (4) ◽  
pp. 317-324 ◽  
Author(s):  
Daniela Mariano Lopes da Silva ◽  
Jean Pierre Henry Balbaud Ometto ◽  
Gré de Araújo Lobo ◽  
Walter de Paula Lima ◽  
Marcos Augusto Scaranello ◽  
...  
Keyword(s):  
Land Use ◽  
Sugar Cane ◽  
Dissolved Inorganic Carbon ◽  
Comprehensive Evaluation ◽  
Land Use Changes ◽  
Agricultural Practices ◽  
Major Ion ◽  
Se Brazil ◽  
Tropical Watersheds ◽  
The Impact

Several studies in tropical watersheds have evaluated the impact of urbanization and agricultural practices on water quality. In Brazil, savannas (known regionally as Cerrados) represent 23% of the country's surface, representing an important share to the national primary growth product, especially due to intense agriculture. The purpose of this study is to present a comprehensive evaluation, on a yearly basis, of carbon, nitrogen and major ion fluxes in streams crossing areas under different land use (natural vegetation, sugar cane and eucalyptus) in a savanna region of SE Brazil. Eucalyptus and sugar cane alter the transport of the investigated elements in small watersheds. The highest concentration of all parameters (abiotic parameters, ions, dissolved organic carbon DOC - and dissolved inorganic carbon - DIC) were found in Sugar Cane Watersheds (SCW). The observed concentrations of major cations in Eucalyptus Watersheds (EW) (Mg, Ca, K, Na), as well as DIN and DOC, were found frequently to be intermediate values between those of Savanna Watersheds (SW) and SCW, suggesting a moderate impact of eucalyptus plantations on the streamwater. Same trends were found in relation to ion and nutrient fluxes, where the higher values corresponded to SCW. It is suggested that sugar cane plantations might be playing an important role in altering the chemistry of water bodies.

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