scholarly journals STUDY OF THE ECOLOGICAL CONDITION OF AGRICULTURAL LAND ADJACENT TO THE REGULATORY IRRIGATIVE POOLS

2021 ◽  
Vol 2 (39) ◽  
pp. 134-140
Author(s):  
V. Nakonechnyi
Keyword(s):  
Agricultural Land ◽  
Water Movement ◽  
Irrigation System ◽  
Field Studies ◽  
Geological Structure ◽  
Technical Condition ◽  
Ecological Condition ◽  
Water Filtration ◽  
Irrigation Systems ◽  
The North

In the article considers the environmental problems that arise during the construction or operation of irrigation systems and analyzes the methods of monitoring the technical condition of their elements. The relevance of research on this topic is due to the progressive dynamics of pollution of surface, groundwater and soils around irrigation networks, which leads to the deterioration of their condition and the development of erosion. The purpose of the study is to identify ways of migration of filtration waters and the consequences of this, to provide an objective justification for the geophysical method of the natural pulsed electromagnetic field of the Earth that was used. To achieve this goal, a number of tasks were solved, such as: the choice of methods for detecting water filtration zones using remote methods; conducting field studies of the state of agricultural lands around the regulatory basins of Tsarychanska irrigation systems. Construction of maps, graphs, diagrams; comparison, analysis of surveys conducted around the basin of the Tsarychanska irrigation system; identification of water movement routes in the underground space depending on the geological structure of the region, forecasting the consequences of soil flooding around the basin. Previous studies are considered. The research of lands located around the regulatory basins was carried out by the method of PIEMPZ, the position of water filtration zones in the soils adjacent to the basin and the direction of water migration were established, the nature of their flow and possible consequences were analyzed. During the research, all the anomalies of the increased and decreased values ​​of the flux density of the magnetic component of PIEMPZ were identified and their characteristics were given. According to the data, the groundwater level rose to almost 3 m. In the eastern part of the RB there is an abnormal decrease in relief. All filtration and flood zones allocated in 2016 increased. According to the filming in 2018, both the northern and eastern sides, except for a small area in the north-western part, are flooded. This level of groundwater worsens the yield and environmental situation around RB. Recommendations provided.

scholarly journals Justification of the underflow intake design in the mountainous gardening conditions for the drip irrigation system

2020 ◽  
Vol 210 ◽  
pp. 05007
Author(s):  
Kharlampiy Kilidi ◽  
Evgeny Kuznetsov ◽  
Anna Khadzhidi ◽  
Larisa Motornaya ◽  
Arsen Kurtnezirov ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Hydrological Regime ◽  
Additional Treatment ◽  
Agricultural Landscapes ◽  
North Caucasus ◽  
Irrigation Systems ◽  
The North ◽  
Polyethylene Pipes ◽  
Intake Structure

For ecological gardening, it is necessary to develop agricultural landscapes, which are currently not used effectively enough in mountainous areas and are not adapted for the production of eco-products, except for hay on pastures. Drip irrigation systems allow you to grow orchards and vineyards on the slopes of mountains and areas with high slopes. The source of irrigation for orchards is usually mountain rivers, which have an unstable water regime due to flood events, which is a problem for the development of ecological gardening and viticulture. Designed water intake structure on the White river for drip irrigation systems, which in a complex hydrological regime source of irrigation ensures the production of water for irrigation of crops, and allows at minimum levels to provide the necessary water supply for irrigation of crops in the highlands of the North Caucasus. The design for extracting irrigation water includes perforated polyethylene pipes with a flushing device located in a trench in the backfill of the filter. Water purified from large deposits flows by gravity into the receiving well and is then sent to an additional treatment system. This approach to water extraction provides a guaranteed irrigation regime for the garden of fruit crops.

scholarly journals Age of volcanic-sedimentary complex from Сape Svyatoi Nos (Eastern Arctic)

2021 ◽  
Vol 66 (4) ◽  
Author(s):  
Artem V. Moiseev ◽  
◽  
Sergey D. Sokolov ◽  
Tatiana N. Palechek ◽  
◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Weighted Average ◽  
Field Studies ◽  
Geological Structure ◽  
Coarse Grained ◽  
Pyroclastic Rocks ◽  
The North ◽  
Terrigenous Rocks ◽  
Fold Belts ◽  
Two Populations

Geological structure and age of the volcanogenic-sedimentary complex of the Cape Svyatoi Nos (Svyatonosskaya formation) are presented. The rocks of Cape Svyatoi Nos are located on the border of the Novosibirsk-Chukotka and Verkhoyansk–Kolyma fold belts, on the coast of the Laptev and East- Siberian Seas. Field studies indicate that the rocks belong to a single volcanogenic-sedimentary complex. The maximum thickness of individual sections reaches up 700 m. Coarse-grained pyroclastic rocks with rare lava flows prevail on the north (on the coast of Laptev Sea). The proportion and dimension of volcanics and pyroclastic rocks decrease in the south, terrigenous rocks appear. In the modern structure, the rocks are deformed.Zircons of several populations were separated from the flow of basalts. Two, the most representative zircon populations are characterized by close subconcordant ages. The structure and U-Pb ages of zircons from the first population suggest their formation during magmatic crystallization with a superimposed postmagmatic thermal event. Zircons of the second population have a xenomorphic appearance, which is typical of zircons formed at the late or postmagmatic phases. The weighted average age (MSWD = 3) of the first two populations is 149.3 ± 1.2 Ma (Tithonian age). It corresponds to the age of crystallization of basalts and the superimposed (close in time) postmagmatic thermal event.The third population of zircons is represented by two rounded grains with Archean U-Pb ages. It is assumed that these grains were trapped by magmatic melt from pre-Jurassic clastic rocks.Late Jurassic-Early Cretaceous radiolarians were identified from different horizons of tuff-terrigenous and terrigenous rocks. This is confirm the obtained U-Pb ages and the coeval of all the studied sections. The Titonian age of volcanic-sedimentary rocks allows us to classify them as suprasubduction complexes of the Late Jurassic - Early Cretaceous, widespread in the Verkhoyansk-Chukotka Mesozoids.

RENDIMENTO DE CULTIVARES DE CAUPI (Vigna unguiculata L Walp.) SUBMETIDAS À DIFERENTES LÂMINAS DE IRRIGAÇÃO

Irriga ◽  
1999 ◽  
Vol 4 (3) ◽  
pp. 139-144 ◽  
Author(s):  
Gianini Peixoto Bezerra Lima ◽  
José Vanglesio de Aguiar ◽  
Raimundo Nonato Távora Costa ◽  
Vital Pedro da Silva Paz
Keyword(s):  
Vigna Unguiculata ◽  
Irrigation System ◽  
Northeast Brazil ◽  
Marginal Product ◽  
Applied Water ◽  
Cowpea Cultivars ◽  
The North ◽  
Significant Difference ◽  
Caixa Postal ◽  
Water Depths

RENDIMENTO DE CULTIVARES DE CAUPI (Vigna unguiculata L Walp.) SUBMETIDAS À DIFERENTES LÂMINAS DE IRRIGAÇÃO1       Gianini Peixoto Bezerra Lima José Vanglesio de Aguiar Raimundo Nonato Távora Costa Universidade Federal do Ceará – Departamento de Engenharia Agrícola. Campus do Pici. Bloco 804. CEP 60455-760 – Fortaleza-CE Vital Pedro da Silva Paz Escola Superior de Agricultura Luiz de Queiroz – Departamento de Engenharia Rural, bolsista da FAPESP. Av. Pádua Dias, 11 – Caixa Postal 11. 13418-900 – Piracicaba-SP       1 RESUMO       O caupi é um dos cultivos mais tradicionais do Norte e Nordeste do Brasil, constituindo alimento básico nestas regiões. Com este trabalho foi possível estabelecer relações entre a quantidade de água aplicada e produtividade de grãos, para três variedades de feijão caupi submetidas a diferentes lâminas de água. Para caracterização das lâminas de água foi utilizado um sistema de irrigação por aspersão convencional em linha. O controle da irrigação foi realizado a partir de tensiômetros instalados à 15 cm de profundidade. Os resultados mostraram que: i) a cultivar João Paulo II apresentou melhores resultados de produtividade para as lâminas de água aplicadas que variaram de T1 = 291,8 mm a T5 = 141,2 mm; ii) sob condições de reduzida disponibilidade de água, ou seja, menor lâmina aplicada, não ocorreu diferença estatística  para a produtividade entre as cultivares estudadas; e iii) para as condições do estudo, a cultivar Setentão apresentou a menor taxa de redução do produto marginal.       UNITERMOS: caupi, irrigação, função de produção       LIMA, G. P. B., AGUIAR, J. V., COSTA, R. N. T., PAZ, V. P. S. Responses OF cowpea cultivars (Vigna unguiculata L Walp) at differents irrigation deficits     2 ABSTRACT       The caupi is one of the most traditional cultivation of the north and northeast - Brazil, constituting a basic food in these areas. With this work it was possible to establish relationships between the amount of water applied and productivity of grains, for three caupi varieties submitted to different irrigation sheets. To diferentiate water depths in the irrigation system, the aspersion in line was used. The control of the irrigation was accomplished using tensiometers installed to 15 cm of depth. The results showed that: i) the João Paulo II variety presented better productivity for the applied water depths; ii) under reduced conditions of water avai lability for study conditions, these was no significant difference in the productivity reached among the cultivars studied; and iii) for the conditions of the study, the variety Setentão presented the smallest rate of reduction of the marginal product.       KEYWORDS: cowpea, irrigation, production function  

IMPLEMENTATION OF THE WATER USE PLAN PROCEDURES, MEASURES AND WATER USE

2020 ◽  
Vol 6 (2) ◽  
pp. 50-58
Author(s):  
Matluba Muxammadiyeva ◽  
◽  
Iftixor Ergashev
Keyword(s):  
Performance Appraisal ◽  
Water Use ◽  
Irrigation System ◽  
Low Pressure ◽  
Irrigation Systems ◽  
Irrigation Methods ◽  
Point Pressure ◽  
A Performance

If we look at the existing irrigation methods used today in the country, then they are divided into: ground, rainfall, underground or underground, drip and spray. Basically, they are transferred to the irrigation field in two forms: through gravity and pressure irrigation systems. Naturally, a gravity irrigation system is economically more expensive than a low pressure irrigation system. However, from a performance appraisal stand point, pressure irrigation methods are less efficient and have serious disadvantages

scholarly journals Agriculture and land use in the North of Russia: Case study of Karelia and Yakutia

2020 ◽  
Vol 12 (1) ◽  
pp. 1497-1511
Author(s):  
Alexey Naumov ◽  
Varvara Akimova ◽  
Daria Sidorova ◽  
Mikhail Topnikov
Keyword(s):  
Land Use ◽  
Agricultural Development ◽  
Agricultural Land ◽  
Geographical Location ◽  
Special Role ◽  
Sources Of Information ◽  
Local Conditions ◽  
Climate Conditions ◽  
The North ◽  
The Republic

AbstractDespite harsh climate, agriculture on the northern margins of Russia still remains the backbone of food security. Historically, in both regions studied in this article – the Republic of Karelia and the Republic of Sakha (Yakutia) – agricultural activities as dairy farming and even cropping were well adapted to local conditions including traditional activities such as horse breeding typical for Yakutia. Using three different sources of information – official statistics, expert interviews, and field observations – allowed us to draw a conclusion that there are both similarities and differences in agricultural development and land use of these two studied regions. The differences arise from agro-climate conditions, settlement history, specialization, and spatial pattern of economy. In both regions, farming is concentrated within the areas with most suitable natural conditions. Yet, even there, agricultural land use is shrinking, especially in Karelia. Both regions are prone to being affected by seasonality, but vary in the degree of its influence. Geographical location plays special role, and weaknesses caused by remoteness to some extent become advantage as in Yakutia. Proximity effect is controversial. In Karelia, impact of neighboring Finland is insignificant compared with the nearby second Russian city – Saint Petersburg.

Subglacial topography and thickness of ice caps on the Argentine Islands

2019 ◽  
Vol 31 (6) ◽  
pp. 332-344 ◽  
Author(s):  
Jānis Karušs ◽  
Kristaps Lamsters ◽  
Anatolii Chernov ◽  
Māris Krievāns ◽  
Jurijs Ješkins
Keyword(s):  
Land Surface ◽  
Geological Structure ◽  
Aerial Images ◽  
Ice Thickness ◽  
Ice Caps ◽  
The North ◽  
Prevailing Wind Direction ◽  
Aerial Vehicle ◽  
Subglacial Topography ◽  
Ground Penetrating

AbstractThis study presents the first subglacial topography and ice thickness models of the largest ice caps of the Argentine Islands, Wilhelm Archipelago, West Antarctica. During this study, ground-penetrating radar was used to map the thickness and inner structure of the ice caps. Digital surface models of all studied islands were created from aerial images obtained with a small-sized unmanned aerial vehicle and used for the construction of subglacial topography models. Ice caps of the Argentine Islands cover ~50% of the land surface of the islands on average. The maximum thickness of only two islands (Galindez and Skua) exceeds 30 m, while the average thickness of all islands is only ~5 m. The maximum ice thickness reaches 35.3 m on Galindez Island. The ice thickness and glacier distribution are mainly governed by prevailing wind direction from the north. This has created the prominent narrow ice ridges on Uruguay and Irizar islands, which are not supported by topographic obstacles, as well as the elongated shape of other ice caps. The subglacial topography of the ice caps is undulated and mainly dependent on the geological structure and composition of magmatic rocks.

On the Applicability of “Provision-Appropriation” Theory to Irrigation Management: An Analysis Based on Institutional Change in the Dongping Irrigation Area

2010 ◽  
Vol 2 (1) ◽  
pp. 83-99
Author(s):  
Chen Jing ◽  
Kan Shizuan ◽  
Tong Zhihui
Keyword(s):  
Institutional Change ◽  
Irrigation System ◽  
Irrigation Management ◽  
Historical Research ◽  
Institutional Changes ◽  
Irrigation Systems ◽  
Irrigation Area ◽  
Site Investigations ◽  
Current State ◽  
System Sustainability

AbstractThis paper, based on historical research on irrigation administration in the Dongping area and on-site investigations into its current state, explores the benefits and problems produced by two institutional changes. As a common pool resource situation, irrigation systems’ “provision” and “appropriation” are two separate issues; any institutional change must thus offer two different solutions. The study concludes that the participatory changes undertaken in the Dongping irrigation area failed, in the end, to resolve the problem of irrigation system sustainability. In particular, it proved difficult for collective action to take place around provision, which led to difficulties in operating the irrigation system.

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