Productivity and Environmental Role of Forest Shelterbelts of Robinia pseudoacacia L. of the Kuban Lowland

Author(s):  
V.V. Tanyukevich ◽  
◽  
S.V. Tyurin ◽  
D.V. Khmeleva ◽  
A.A. Kvasha ◽  
...  

Works on protective afforestation are carried out in order to protect agricultural land from degradation processes, as well as to improve the microclimate of land. The research purpose is to study the bioproductivity and environmental role of Robinia pseudoacacia L. forest shelterbelts in the conditions of the Kuban lowland. The approved and generally accepted methods of forest valuation, forest land reclamation, botany, and mathematical statistics were applied. Plantings were created according to the standard technology for the steppe zone of the Russian Federation. The area of forest shelterbelts is 62.4 ths ha, including 5 % of the young growth (I state class), 80 % of middle-aged forest plantings (II state class), 10 % of maturing plantings (II state class), 5 % of mature and overmature plantings (III state class). Living ground cover is formed by the following species: Koeleria pyramidata L., Poa pratensis L., Festuca pratensis H., Elytrígia repens L., Dactylis glomerata L., and Phlum pratense L. Aboveground phytomass is 100–300 g/m2; height is 25–32 cm. Plantings are characterized by the quality classes: young growth – I and II; middle-aged and maturing – III; mature and overmature – IV. At the age of natural maturity (70 years), the Robinia trunk reaches the average height of 15.1 m with the average diameter of 22.1 cm. The total stock of wood reaches 18, (ths m3), including (ths m3): young growth – 68 (ths m3); middleaged plantings – 14,871 (ths m3); maturing plantings – 2,187 (ths m3); mature and overmature plantings – 1,314 (ths m3). Aboveground phytomass in young growth is 20.2 t/ha; in mature and overmature plantings it is 391.2 t/ha. In the region it is estimated at 17,070 ths t, including (ths t): young growth – 64; middle-aged plantings – 13,753; maturing plantings – 2,032; mature and overmature plantings – 1,221. The share of stem mass reaches 84.5–80.8 %; woody greenery – 4.2–1.5 %; branches – 11.3–17.7 %. Recalculation coefficients of the stock into aboveground phytomass are the following for: young growth – 0.936; mature and overmature forest shelterbelts – 0.929. Phytosaturation of forest shelterbelts varies within 0.314–2.474 kg/m3. Forest shelterbelts have accumulated 8,534 ths t of carbon, which is estimated at 145.1 mln dollars. The sphere of application of the research results is the Krasnodar Krai forestry, which is recommended to create an additional 60 ths ha of forest shelterbelts, which will provide a normative protective forest cover of arable land of 5 % and annual carbon sequestration up to 3.4 t/ha.

Plants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 40
Author(s):  
Joanna Kidawa ◽  
Damian Chmura ◽  
Tadeusz Molenda

Studies on opencast mines have indicated that the spontaneous colonization of excavations and sedimentation tanks by vegetation is determined not only by the substratum and the land relief, but also by the hydrological and hydrochemical relations in the exploitation hollow. Sometimes, biological invasions can also disturb the natural revegetation. Robinia pseudoacacia L. black locust is an invasive alien species that frequently colonizes sandy habitats. Thirty study plots were randomly established on four types of sites: (1) sandy sediments, extremely dry places located mainly on heaps of post-washer slime; (2) sandy sediments, dry areas that are periodically flooded and have pulp; (3) clay sediments, damp areas that are periodically submerged, and (4) the control, a forest with R. pseudoacacia in its neighborhood. A total of 94 species of vascular plants and seven species of mosses were found. The vegetation at the sites differs and the role of the black locust increases along the dryness gradient and developmental phase of vegetation. Older phases of succession resemble a forest in the surrounding area. It is a R. pseudoacacia species-poor monodominant stand that has been forming for around 30 years. A lack of trees and dense grasses favor the successful invasion of the black locust on man-made sandy habitats.


Author(s):  
Kurbonov Eldor Rashidovich ◽  

This article describes the role of state control in the field of land reclamation and importance of its legal provision, government functions in implementing control, forms of state control in the field of land reclamation, implementation legal expertise procedure in land reclamation, content and essence of land reclamation cadaster, as well as theoretical and practical analysis of legal basis for its maintenance, proposals for improving the legislation in this area.


1974 ◽  
Vol 52 (4) ◽  
pp. 727-734 ◽  
Author(s):  
Wolfgang Höll

In the presence of phosphoenolpyruvate, cell-free preparations from distinct annual ring tissues of the trunk and the root of Robinia pseudoacacia L. incorporate 14CO2 into organic compounds. The CO2 fixation process exhibits a pH optimum at 7.8 and is activated by Mg2+. Aspartic acid contained 97% of the radioactivity incorporated. Oligosaccharides, malic acid, fumaric acid, glutamic acid, and three substances not identified with certainty show minor labeling. The activities of malate dehydrogenase (EC. 1.1.1.37), aspartate aminotransferase (EC. 2.6.1.1), and "malic enzyme" (EC. 1.1.1.40), involved in the further metabolism of the primary CO2 fixation product oxaloacetate, were detected spectrophotometrically in preparations from different annual rings of the trunk. Compared with the outer zones, the innermost part of the sapwood shows only little activity of these enzymes. The capacity to transfer CO2 into organic compounds decreases in the radial direction of both trunk and root wood. Heartwood preparations exhibit no CO2 fixation. In comparison to the trunk, the wood of the root shows only little dark CO2 fixation. The possible physiological role of this nonautotrophic CO2 binding in the wood of Robinia is discussed.


Author(s):  
A.A. Sidorov ◽  
◽  
G.E. Kudinova ◽  
A.G. Rozenberg ◽  
◽  
...  

The article provides information on the state and trends in land reclamation at the federal and regional (Samara region) levels, the availability of irrigated lands. Among developing countries with the largest sown areas in Russia and in its regions, over the years of reforms, there has been a significant reduction and lag in increasing the area of irrigated land, a significant part of which remains in an unsatisfactory state. The authors consider the 2014 state regional program to stimulate this sphere as well as the subprogram for the development of land reclamation adopted in 2018 and for the period up to 2025 within the framework of the state regional program for supporting agriculture. Since 2019, a regional component of the federal project "Export of agricultural products" has been operating in the constituent entity of the Russian Federation, which provides for the implementation of measures in the field of reclamation of agricultural lands. Shown is the effectiveness of the implementation of the state program and subprogram, which contributed to the increase in the area of reclaimed land, the involvement of retired agricultural land in the turnover. The applied measures of state support are unstable. In the system of regional development of land reclamation, the main financial sources are extra-budgetary funds. Budget allocations are made up of regional funds, the size of which is decreasing, and the growing role of the federal budget in the framework of the activities of the regional component of the federal project "Export of agricultural products".


2021 ◽  
pp. 193-198
Author(s):  
Károly Rédei ◽  
Tamás Ábri ◽  
Fruzsina Szabó ◽  
Zsolt Keserű

In Hungary, the black locust (Robinia pseudoacacia L.) can be considered as the most important fast-growing, stand-forming introduced tree species. Due to its positive growing technological characteristics as well as wood utilization possibilities, at the present, black locust is the most widely planted tree species in Hungary, covering 25% of the country’s total forest area. One of the important tasks ahead of Hungarian black locust growers is to improve the quality of black locust stands with introducing selected cultivars. For the estimation of the growth rate and yield a numerical yield table has been constructed on the basis of surveys of the experimental plots established in pure,managed ’Nyirségi’ ,’Üllői’ and ’Jászkiséri’ black locust cultivars’ plantations which can be suitable for sawlogs production. In the course of 56 stand surveys the key stand characteristics were measured, and then, were reconsidered the average height, diameter (DBH), volume, basal area and stem number given separately for the main (remaining), secondary (removal) and total stands per hectare. The programmable editing procedure allows to extention and formal change of information content of the yield table according to different demands.


Pneumologie ◽  
2004 ◽  
Vol 58 (11) ◽  
Author(s):  
S Kespohl ◽  
R Merget ◽  
M Gellert ◽  
T Brüning ◽  
M Raulf-Heimsoth

Author(s):  
P. N. Vanyushin ◽  
A. V. Kuzin ◽  
А. А. Pavlov ◽  
А. V. Nefedov ◽  
N. А. Ivannikova

The article analyzes the current state of the irrigation and drainage systems of the Ryazan region. It is shown that the lack of technical operation of the drainage network led to its failure and failure to perform its functions. Irrigation, in spite of the fact that it gives stability in the years of droughts due to aging and the dismantling of machinery and equipment is not carried out. It is shown that for the reconstruction and / or modernization of irrigation and drainage systems it is necessary on the basis of inventory to determine the environmentally optimal and economically viable systems, their parts and structures that require rehabilitation, reconstruction and / or modernization. The decision to reconstruct may include not only the ameliorative system as a whole, but also some part of it, for example, a canal, pipeline or a separate hydraulic structure, taking into account the justification of economic feasibility. In dry periods, for the Meshcherskaya lowland and areas with peat soils, it is necessary to provide for land-reclamation systems for dual regulation of soil moisture, which reduces the possibility of peat ignition and the spread of fire. It should be borne in mind that the reconstruction of land-reclamation systems has its specific features, which include: socio-economic (increasing the productivity of agricultural land, obtaining additional income, creating modern infrastructure, increasing employment, living conditions, labor, etc.) ; ecological (creation of cultural landscapes, ensuring their ecological sustainability, prevention of land degradation processes, improvement of recreational conditions, elimination of waterlogging, flooding, salinization, erosion, etc.). Reclamation activities are carried out in compliance with the requirements of land, water, forestry legislation of the Russian Federation, as well as the legislation of the Russian Federation on the protection of the environment, on the subsurface, on the plant world and on the animal world.


2020 ◽  
Author(s):  
V. Verhunov ◽  
Yu. Dovgoruk

The monograph highlights the main stages of development of agricultural research land reclamation work in Ukraine, one of the founders, creators and developers of which was Professor D.O. Dzhovani. The scientific, scientific-organizational and pedagogical activities of the well-known domestic scientist was described, who is an iconic figure for the formation of experimental reclamation work in Ukraine and abroad. The professor laid the scientific-organizational and conceptual principles, in particular the state legislative acts of development of the scientific direction of agro-amelioration in Ukraine and Russia during the 20-30's of the 20th century. He is the author of a number of scientific papers in the field of experimental land reclamation, author of the first textbook in Ukrainian for agricultural courses "Reclamation legislation: a guide for the agricultural schools"(1927). D.O. Dzhovani was personally involved in the opening of a number of reclamation stations in the research network of Ukraine. He was a member of the Scientific & Advisory Board (SAB) on the construction of Dniprelstan and the Special Commission on Dniprelstan at the Agricultural Scientific Committee of Ukraine. The scientist is one of the founders of the Ukrainian Scientific & Research Institute of Agricultural Land Reclamation. The available archival documents attest to his significant contribution to the establishment and subsequent functioning of this institution. After forced emigration to Great Britain, he continued to supplement his inventions and research in the field of agriculture, until the end of his days he did not lose active interest in the business of his life – land reclamation and swamp culture. This edition also contains bibliographic descriptions of his works, written personally and in co-authorship, reports on scientific activities, scientific & popular publications. The book is recommended for scientists, teachers, graduate students, students, specialists in agricultural science, all those who are interested in the history of agricultural research work development.


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