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Evaluation of climate change in Ukrainian part of Polissia region and ways of adaptation to it

Pyotr Kovalenko Anatoliy Rokochinskiy Jerzy Jeznach Roman Koptyuk Pavlo Volk Nataliіa Prykhodko Ruslan Tykhenko
Journal of Water and Land Development | 2019 | No 41 | 77-82
Keywords climate change evaluation Polissia region ways of adaptation
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Abstract

The analysis of the current state of weather and climatic conditions and evaluation of their predicted changes for im-mediate and distant prospect in the drained areas of Ukrainian Polissia region was carried out in the article. The main trendsin changes of meteorological characteristics and their possible effect on the conditions of functioning water management and ameliorative objects and complexes as well as on the natural and ameliorative state of drained areas were identified. The research uses a method of predictive-simulation modelling with used predictive assessment models of normalized dis-tribution of the basic meteorological characteristics in the long-term and one-year vegetation context. According to the re-sults of the research it was established that, for today a high variability in meteorological characteristics can lead to the sig-nificant deterioration of operation conditions of water management and ameliorative objects and units, as well as natural and ameliorative conditions of drained lands in Polissia region as a whole. Core measures regarding the adaptive potential enhancement and development in the region under the conditions of climate change were examined.

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Authors and Affiliations

Pyotr Kovalenko
Anatoliy Rokochinskiy
Jerzy Jeznach
Roman Koptyuk
Pavlo Volk
Nataliіa Prykhodko
Ruslan Tykhenko

Evaluation of ecological and economic efficiency of investment in water management and land reclamation projects

Pyotr Kovalenko Anatoliy Rokochinskiy Pavlo Volk Vasyl Turcheniuk Nadia Frolenkova Ruslan Tykhenko
Journal of Water and Land Development | 2021 | No 48 | 81-87 | DOI: 10.24425/jwld.2021.136149
Keywords ecological and economic efficiency evaluation investments land reclamation risks scientific and methodological principles water management weather and climatic conditions
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Abstract

The article is devoted to the actual scientific and practical problem of improving methodological and methodical ap-proaches to the evaluation of design solutions in the water management and land reclamation industry based on the ecolog-ical and economic principles in conditions of uncertainty. The current stage of the development of the water management sector in Ukraine is characterized by a combination of past negligence and the present energy, food and water crises, as well as global climate change. To solve these problems, it is necessary to reform organizational-economic relations in the industry, including new sources and forms of financing for water management and land reclamation projects, introduction of new environmentally advanced technologies, and the im-provement of the existing ecological and economic evaluation of investments. Based on scientific and methodological recommendations used for evaluating the effectiveness of investment in vari-ous spheres of economic activity, the authors developed and implemented an improved methodology for the evaluation of water management and land reclamation projects. It is based on methodological approaches that cover such elements as the variety of options, changes in the value of money over time, specific project implementation environment, including the impact of weather, climate and environmental factors on project performance, multilevel and gradual evaluation of a pro-ject against specific criteria and according to stages of the project cycle. The method was tested during the reconstruction of a rice irrigation system in the steppe zone of about 3000 ha in Ukraine. Economic results, namely the deterministic payback period and investment return index confirm that the proposed mechanism, unlike the traditional one, increases the economic and environmental feasibility of water management and land reclamation projects. Therefore, it stimulates investment in the land reclamation sector.
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Authors and Affiliations

Pyotr Kovalenko
1
ORCID: ORCID
Anatoliy Rokochinskiy
2
ORCID: ORCID
Pavlo Volk
2
ORCID: ORCID
Vasyl Turcheniuk
2
ORCID: ORCID
Nadia Frolenkova
2
ORCID: ORCID
Ruslan Tykhenko
3
ORCID: ORCID
  1. Institute of Water Problems and Land Reclamation of NAAS of Ukraine, Chapaeva Str., 14, fl. 6, 01030, Kyiv, Ukraine
  2. National University of Water and Environmental Engineering, Rivne, Ukraine
  3. National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine

Assessment of the energy and overall efficiency of the closed irrigation network of irrigation systems on the basis of the complex of resource-saving measures

Pyotr Kovalenko Anatoliy Rokochynskiy Ievgenii Gerasimov Pavlo Volk Nataliia Prykhodko Ruslan Tykhenko Ivan Openko
Journal of Water and Land Development | 2022 | Special Issue | 15-23 | DOI: 10.24425/jwld.2022.143717
Keywords assessment closed irrigation network closed irrigation system complex of resource-saving measures energy efficiency overall efficiency
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Abstract

The presence of water, food and energy crises, both at the global and regional levels, as well as their deterioration under conditions of climate change, with an insufficient level of technical condition of existing irrigation systems, increase the strategic importance of irrigation as the guarantor of the agricultural sector sustainable development.
This makes it necessary to increase, foremost, energy and overall (technical, technological, economic, and environmental) efficiency of the closed irrigation network of irrigation systems. In this regard, the complex that includes organisational-technological, technical, and resource-saving groups of measures was developed. Estimation of energy and overall efficiency of the closed irrigation network of irrigation systems at the implementation of developed complex were executed on the example of the agricultural enterprise located in the Petropavlovsk district of the Dnipropetrovsk region of Ukraine. For this purpose, machine experiment based on a use of the set of optimisation, forecasting and simulation models was implemented, including the model of climatic conditions, the model of water regime and water regulation technologies, as well as the model of crop yields on reclaimed lands.
According to the obtained results, established that implementation of the complex reduces the consumption of irrigation water by 2.2–30.7% and electricity consumption by 12.9–38.2%. The rate of specific costs decreases from 1.6 to 1.32–1.47, and the coefficient of environmental reliability increases by 5.6–16.7%. At the same time, the profitability index increases from 1.07 to 1.75–2.57, and the discounted payback period decreases from 18 to 8–5 years.
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Authors and Affiliations

Pyotr Kovalenko
1
ORCID: ORCID
Anatoliy Rokochynskiy
2
ORCID: ORCID
Ievgenii Gerasimov
2
ORCID: ORCID
Pavlo Volk
2
ORCID: ORCID
Nataliia Prykhodko
2
ORCID: ORCID
Ruslan Tykhenko
3
ORCID: ORCID
Ivan Openko
3
ORCID: ORCID
  1. Institute of Water Problems and Melioration of the National Academy of Agrarian Sciences of Ukraine, Ukraine, Vasylkivska St, 37, 03022, Kyiv, Ukraine
  2. National University of Water and Environmental Engineering, Rivne, Ukraine
  3. National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine

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