Agrophytocenoses of alfalfa as an element of biologization of agriculture in the Far East

Author(s):  
E. P. Ivanova E. P. ◽  

Cultivation of variable alfalfa meets the requirements of biological agriculture, has a powerful phytomeliorative effect, is a large-scale source of biological nitrogen, increases soil fertility and yields of subsequent crops, reduces the cost of agricultural products, contributes to resource conservation and increases the competitiveness of crop and livestock produc

Author(s):  
Sergey E. Rudov ◽  
◽  
Vladimir Ya. Shapiro ◽  
Olga I. Grigoreva ◽  
Igor V. Grigorev ◽  
...  

The urgency of the task of effective development of cutting areas on the slopes of mountains, hills, and hilly-ridge reliefs is primarily due to the depletion of available, special, lowland operational forests in Siberia and the Far East, which were once, not quite correctly, called forest-surplus regions of the Russian Federation. The operational woodlands that are convenient for development in Siberia and the Far East are largely depleted. To develop new ones, large-scale road construction is necessary, which requires significant financial expenses and reduces the already low profitability of logging production. It is also declining due to the ever-increasing volume of export of harvested timber, even if the cost of construction and maintenance of a new network of logging roads is not considered. Forest ecosystems located on slopes are among the most vulnerable. When working on the slopes with traditional systems of logging machines, it becomes necessary to cut a serpentine of skid trails, which later become concentrators of water and wind erosion. Currently, leading manufacturers of machinery and equipment for the forest industry, such as Ponsse, John Deer, Komatsu, and others, have developed technical solutions that significantly facilitate the operation of forest machine systems. Such solutions, first of all, include winches integrated into the transmissions of machines. Another solution is to use separate self-propelled winches remotely controlled by the operator of a forest machine, for example, T-winch. In this case, the machine does not receive additional weight from the winch integrated into it; however, the negative impact of forest machines on soils does not disappear, but has its own significant specifics. The article shows that when performing logging operations on slopes, primarily steep ones with slope angles exceeding 20–25°, it is necessary to make adjustments to the assessment of the destruction nature of the soil array and the patterns of the track depth formation under the influence of the skidding system. For citation: Rudov S.E., Shapiro V.Ya., Grigorev I.V., Kunitskaya O.A., Grigoreva O.I. Modeling the Interaction of Forest Machines with Soil when Working on Slopes. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 6, pp. 121–134. DOI: 10.37482/0536-1036-2021-6-121-134


1936 ◽  
Vol 5 (18) ◽  
pp. 189-193
Author(s):  
Frederick V. Field
Keyword(s):  
Far East ◽  

Author(s):  
Vladimir Victorovich Tsyganov

Mechanisms and procedures for strategic management of the development of transport infrastructure in a large-scale region located in difficult climatic and geographical conditions are proposed. These mechanisms and procedures are illustrated by the example of managing the development of transport infrastructure in Siberia, the Far East and the Arctic zone of Russia.


1988 ◽  
Vol 15 (3) ◽  
pp. 197-204 ◽  
Author(s):  
John L. Cloudsley-Thompson

Throughout their existence, civilized peoples have been turning their environment into desert. The causes of desertification are well known—overgrazing, the felling of trees for fuel, and bad agricultural practices. Their effects are apparent in disasters such as the Sahel drought and recent famines in Ethiopia, the Sudan, and elsewhere. The population explosion enhances the extent of the environmental degradation. More agricultural land is currently being lost through salinization and waterlogging than is being created by new irrigation schemes, but this is only part of a problem that faces all tropical third-world countries and for which multinational organizations and the affluent nations of temperate regions are, regrettably and often unknowingly, largely responsible.Because the poorer countries receive, for their agricultural products, cash of which the market value does not take into account the cost to the environment of overexploiting the land, they are apparently doomed to a vicious circle of increasing poverty, deprivation, and famine. Yet it is not beyond the abilities of civilization to devise a viable scheme, based upon sound ecological principles, by which the quality of life of desert peoples could be immeasurably improved. Instead of trying to change the land to make it conform to present economic and political expectations, development should be adapted to exploit the potentialities of the environment as it exists. Such a scheme, profiting from the diversity of microenvironments that occur in desert regions, would encompass multiple land-use and the development of numerous small agricultural and other projects—rather than the large-scale schemes hitherto initiated in fragile environments, and which have so often led to large-scale disaster. By adopting it, the world would simultaneously be made both more stable and more productive for the benefit of all its inhabitants.


1969 ◽  
Vol 12 (02) ◽  
pp. 131-137 ◽  
Author(s):  
Barbara Dubins

The Comoro Archipelago is situated at the head of the Mozambique Channel, midway between Cape Amber and Cape Delgado. The largest of the four islands, Great Comoro (or Grande Comore), 175 miles from Mozambique, is the northernmost island in the group. Mayotte (or Mayotta), the first of the islands to become a French colony, and the southernmost in the group, is the closest to Madagascar. To the northwest of Mayotte is Anjouan (or Johanna), referred to by authors, both ancient and modern, because of its fertility, as the “Pearl of the Comoro Islands”; immediately to the south of Great Comoro, and almost parallel with Anjouan, is Mohilla (or Moheli), the smallest island in the group. The population of the islands is a mixture of African, Arab, and Malagasy, numbering over 170,000 people, with the heaviest concentration on Anjouan. The exportation of agricultural products has always been the chief industry of the archipelago. Its location at the head of the Mozambique Channel, and the wide range of food products available, made the Comoro Islands a popular supply stop for ships bound for India and the Far East via the Mozambique Channel; for the ships of the British antislavery squadron; and for whalers fishing in the southern Indian Ocean. European technological progress and the opening of the Suez Canal combined to render this function obsolete. During the last half of the nineteenth century, Mayotte, which became a French colony in 1841, was a moderately successful sugar colony. Plantations were also opened on Anjouan and Mohilla, but it was not until after the establishment of a French protectorate over the other two islands in 1886 that plantation economies and new crops were introduced to the rest of the archipelago. Ylang-Ylang, a perfume essence, is the major export crop; sisal, vanilla, cocoa, and coffee are also exported. Coconuts are the only export commodity which has survived from the precolonial economy.


2018 ◽  
pp. 331-342
Author(s):  
Natalia V. Khisamutdinova ◽  

The article studies the creation of the first archival organization in Primorye, the Primorye Regional Archival Committee. It was due to the efforts of professors of the history and philology faculty (later, part of the Far Eastern State University), one of the first higher education institutions in the Russian Far East, established in Vladivostok in 1918 by the inteligentsia escaping the Civil War. The article attempts to identify and systematize the scattered papers of departmental archives in order to promote the development of the archiving and the study of the region. The research has revealed several factors that contributed to the emergence of archiving in the Far East, one of them large-scale migration during the Civil War with predominance of educated and enterprising people. After receiving the status of scientific institution, the Primorye Regional Archival Committee (later, the Primorye Province Archival Bureau) reviewed, collected, and described documents in major departmental archives of the region, thus laying the foundation of archiving in the Russian Far East, and, moreover, identified historical artifacts, thus providing a headstart for archaeologists and ethnographers. The first archivists laid down professional foundations for archival studies in the Far East. Their methodological recommendations published in the Bulletin of the Primorie Regional Archival Committee (Izvestiya Primorskoi oblastnoi arkhivnoi komissii) or separately haven’t yet lost their significance. Promulgation of archiving and public involvement in the search for valuable historical records and objects provide an example of skill and efficacy. These activities were all the more significant since they started on a voluntary basis, with no official support or funding. The article draws on publications and materials from the personal archive of A. P. Georgievsky (1888–1955), archivist and educator. New materials help to clarify the first archivists’ biographical data and to assess the significance of their activities in identifying and collecting data about the history of the Far East and for further development of its archives.


Author(s):  
Artem S. Lukyanets ◽  
◽  
Roman V. Manshin ◽  

The article examines the main factors in the formation of human capital in the regions of the Far Eastern Federal District. The article discusses in detail the main indicators that form the integral human development index, developed by the specialists of the United Nations Development Program. The key characteristics of socio-economic processes were identified, an analysis of the most important economic indicators of the studied subjects of the Russian Federation was given. It was found that one of the most important components of human capital is the social and economic stability of society. In the regions of the Far East, on the whole, an unfavorable socio-economic situation has developed, which directly affects human capital. It was found that, despite the higher level of income compared to the average for Russia, the real incomes of residents, adjusted for the cost of living in the considered regions, turned out to be lower than in Russia. An important factor in the development of human capital is the life expectancy of the population, which in the regions of the Far East is below the national average and does not reach the planned targets set by the Concept of the Demographic Policy of the Far East for the period up to 2025. It has been established that the main contribution is made by external causes of death in the male working-age population in the most sparsely populated regions, characterized by a low level of development of medical infrastructure and its availability. Another factor in the development of human capital is the level of education of the population. The development of this factor in the Far East repeats the all-Russian trajectory, maintaining the tendency to reduce the number of educational institutions at all levels, an increase in the number of students in programs of primary secondary and complete education is recorded. The persistence of such trends, together with changes in the age structure of the population, can negatively affect the development of human capital in the regions of the Far East.


2021 ◽  
Vol 5 (3 (113)) ◽  
pp. 6-18
Author(s):  
Lev Mazelis ◽  
Rodion Rogulin

The relevant problem of guaranteed supply of high-quality raw materials to a timber processing enterprise that does not have its own sources of raw materials is considered. A method for the formation of sustainable chains of supplying raw materials to a timber processing enterprise was proposed, taking into consideration uncertainties and risks associated with the purchase of raw materials on the mercantile exchange and the implementation of the circuit of delivery to a warehouse. A dynamic model, which is a problem of stochastic nonlinear programming, the objective function of which is the cost of purchasing raw materials, was developed. The model makes it possible to form a plan for purchasing raw materials on the timber section of the mercantile exchange on a given planning horizon, taking into consideration uncertainties when it comes to the number of daily offers, their volumes, and prices. The risk of cancellation of the concluded contract due to the loss of the quality of raw materials during delivery and non-fulfillment of delivery terms was also taken into consideration. To find a solution to the model, a two-stage circuit, in which the first stage involves a procurement plan that is close to optimal, was proposed. At the second stage, a plan that is closest to the basic one in terms of the volume of purchased raw materials and minimizing the total costs is chosen for each day of implementation of a random flow of applications. The numerical solution at the first stage is found using the heuristic algorithm that uses the branch and bound method and the genetic algorithm at certain steps. At the second stage, the multi-criteria problem of mathematical programming is solved numerically. An example of the formation by a timber processing enterprise in the Far East of a suboptimal procurement plan that ensures an increase in the efficiency and sustainability of economic activity in the long term is considered


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