Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 18
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

The problem of research undertaken in the article concerns the adaptation of traditional models of calculating the cost of capital to the specifics of mining companies. Solutions known from the literature do not give reasonable results. This is due to the uniqueness of the activities of mining companies, in which case we are dealing with a lack of reference to the typical market situations. The aim of this article is to identify solutions that allow rational and reliable results to be obtained. One of the proposals is a modified Fama-French method. The article was tested by calculating the cost of capital in the largest Polish mining enterprises. The problem of calculation of the cost of capital is particularly important in the area of assessing the effectiveness of investment projects. The cost of capital is used as the discount rate in dynamic measures of performance, such as NPV.

Go to article

Authors and Affiliations

Marian Turek
Aneta Michalak
Download PDF Download RIS Download Bibtex

Abstract

In the last decades Real Options Valuation (ROV) has been gaining a leading role among methods of economic evaluation and risk analysis of projects. This method enables valuation of managerial flexibility which includes postponing investments and reformulating of operating strategies of companies. By doing this, the method delivers higher project values than derived from the classical discount approaches, such as NPV. The value of flexibility may be of lower or greater importance - depending on types, configuration and sequence of occurring real options. Common methods of real options valuation are built on lattice models which approximate continuous stochastic process. One of the most popular techniques used for real options valuation - a marketed asset disclaimer approach (MAD) - is based on the binomial tree. The paper presents valuation of the mineral project with three simultaneous options: option-to-expand, option-to-contract and option-to-abandon.

Go to article

Authors and Affiliations

Piotr Saługa
Download PDF Download RIS Download Bibtex

Abstract

An article presented hereby relates to valuation of undeveloped deposits of minerals which are not sold on markets in unprocessed form and their processing into a marketable commodity calls for construction of an additional plant which usually is not operated by a mining company. In practices lignite and limestone deposits fall into the above defined category. Difficulties in their valuation are caused by their two major properties: any economically justifiable development of such deposits can be carried out only in close co-operation with a neighboring power plant or cement factory and development of such fields is usually lengthy. Therefore, out of four methods recommended by the POLVAL Code to be used for valuation of undeveloped mineral deposits only the options based approach seems to offer, however with some important limitations, useful tools for appraisal of lignite and limestone deposits.

Go to article

Authors and Affiliations

Robert Uberman
Download PDF Download RIS Download Bibtex

Abstract

The article discusses possibilities and usefulness of application of the cost approach for mineral deposits valuation. Author focuses on the ones related to exploration for and documentation of hypothetical deposits, looking in their case for possible areas of application of the approach in consideration. Analyses covers the three most commonly used valuation methods: Appraised Value Method (AVM), Multiple of Exploration Expenditure Method and Killburn's Method, indicating their strengths, deficiencies and dangers of potential misuse. In conclusion author indicates areas of potential application of the cost approach where it's proper application may deliver credible and useful results.

Go to article

Authors and Affiliations

Robert Uberman
Download PDF Download RIS Download Bibtex

Abstract

The purpose of this paper is to compare two approaches applied in property valuation: artificial neural networks and spatial regression. Despite the fact that artificial neural networks are often the first choice for modeling in the big data era, spatial econometrics methods offer incorporation of information on dependences between multiple objects in the studied space. Although this dependency structure can be incorporated into artificial neural network via feature engineering, this study is focused on abilities of reproducing it with machine learning method from crude coordinate data. The research is based on the database of 18,166 property sale transactions in Warsaw, Poland. According to this study, such volume of data does not allow artificial neural networks to compete in reflecting spatial dependence structure with spatial regression models.
Go to article

Authors and Affiliations

Damian Przekop
1

  1. Warsaw School of Economics, Poland
Download PDF Download RIS Download Bibtex

Abstract

Mineral deposits are such type of assets, the valuation of which can be carried out in a very diverse manner. Methods and procedures for such a valuation are most often applied to mineral deposits with mineral reserves (according to the CRIRSCO classification), much less frequently and usually only using a comparative approach for undeveloped, initially recognized mineral deposits (with mineral resources).

In Poland, a significant portion of mineral deposits, mainly of energy, metal and chemical minerals, are covered by the so-called mining property of the Treasury. At the moment, there is a lack of consistent and thoughtful management of these deposits. The appropriate methodology for valuing these deposits, which are at various stages of recognition (sometimes also of development), should be one of the key elements of such management. The State Treasury usually disposes of mining rights by “establishing” mining usufruct in the form of a contract, with the determination of remuneration for this establishment. The rules for determining remuneration for the establishment of mining usufruct are determined on the basis of an internal informal document of the Ministry of the Environment with very simplified rules for determining this remuneration, to a very limited extent related to the actual value of the deposit, which is also variable over time. This fee should be in close relation to the value of the mineral deposit valued at a given moment, taking the current conditions, including technological, environmental, formal and legal, and – in particular – market conditions into account. The valuation of mineral deposits covered by mining property, except for current needs in determining the basis for remuneration for mining usufruct establishing, should also be used to determine the value of these deposits annually as part of the State Treasury property and to present its results as part of the State Treasury Property Status Report.

It is an open matter whether the methodology of valuation of the discussed mineral deposits should be based on accepted and widely used solutions for the valuation of mineral deposits for the purposes of business transactions or based on methodology of valuation of deposits as part of the planned system of Integrated Environmental and Economic National Account (up to date poorly developed). The paper presents the most important elements of both methodological approaches. It seems that the use of selected elements of each of these approaches would be advisable in this case.

Go to article

Authors and Affiliations

Krzysztof Galos
Download PDF Download RIS Download Bibtex

Abstract

The article discusses problems related to rules and regulations determining compensations for the mining usufruct of mineral deposits covered by the so called “state mining ownership”. Specific acts of law framing agreements on mining usufruct between government and mining enterprises were analyzed. Rules and algorithms applied to calculate an appropriate compensation are evaluated leading to several conclusions, including the one about lack of a direct legal grounding for them. Such a situation creates disputes and may be risky for all involved. It was also indicated that, in parallel, the State lets another class of mineral deposits, namely the ones owned as a result of real estate ownership and the related Civil Code regulations confirmed by the mining law. In such cases, a mining entrepreneur gets usufruct of a real estate, but only the one with mineral rights. Subsequently a comparison of the rules and algorithms established for determining compensation for mining usufruct and for usufruct of real-estates comprising rights for mineral assets was performed. Arguments for a far going harmonization between these two were put forward. This implies that a starting point for determining any compensation has to be a valuation of a relevant mineral deposit market value as opposed to any universal, however complicated, prescribed algebraic formula. Such a process is complicated and demands competences in geology, mining and finance. Consequently, regulations set in the Polish Mineral Asset Valuation Code shall be applied to both a running a valuation process and indicating competent persons. As a result, recommendations leading to correlate rules applied in both cases are put forward including the adoption of mineral asset valuation as a fundament to determine the level of compensation for the mining usufruct. The closing section contains recommendations regarding necessary changes in the legal framework.

Go to article

Authors and Affiliations

Ryszard Uberman
Robert Uberman
Download PDF Download RIS Download Bibtex

Abstract

The presented article contains an analysis resulting from 10 years’ experience in the implementation of the POLVAL Code to mineral assets valuations carried out by Competent Valuators. It had been based on data of more than 100 performed valuations. First and foremost, challenges resulting from preferences given by various relevant regulations to the application of a market-based approach were identified. It was underlined that they prompt Valuators to compromise the quality of the database containing reference transactions. In the case of an income based approach, issues resulting from the adoption of estimates and subjective assumptions were discussed. It was indicated that this fact alone cannot create a valid argument to reject the results of such a valuation providing that they have been implemented in a coherent manner and uncertainty was reflected in the value of the applied discount rate. Separately recommended changes to the present version of the POLVAL Code were presented. In conclusion, a significant, positive role of the introduction of the POLVAL Code for the structuring processes of mineral asset valuation was indicated.

Go to article

Authors and Affiliations

Robert Uberman
Download PDF Download RIS Download Bibtex

Abstract

The article considers the issues of the value of invested capital, methods of its measurement and its growth mechanisms. The author draws attention to relationship between the value of capital and the paradigm of economics, which ultimately indicates the existence of connections between the effectiveness of investment and the philosophy of economics. The main purpose of the article is to identify abnormalities in the valuation of assets by investors due to their incorrect or incomplete understanding of the value growth mechanism, the effects of which may assume significance on a macroeconomic scale.

Go to article

Authors and Affiliations

Michał Mrowiec
Download PDF Download RIS Download Bibtex

Abstract

The paper presented intends to fill up a gap in surveying the Hotelling Rule by taking a company based, microeconomic approach based on analyses of annual reports. Using selected data three fundamental hyphothesis are tested:
1) growth rate of margins (“net margins” including a capital charge) per unit realized by mining companies must exceed a rate equal to their cost of capital,
2) output shall follow deviations from the Hotelling growth line,
3) margins shall follow a path set by individually defined expected rate of return.
The analysis was based on 5 leading gold producers, responsible for ca 15–20% of global primary production, all of them public and listed on a stock exchange for the entire period of 2004–2019/2020. As margin shall grow at a rate compensating individual risk of a company in consideration, they shall not be homogenous. At 1st step industry WACC was adopted to calculate a normalized capital charge. The calculations revealed no support for Hotelling Rule. There is no evidence that over a period of above 15 years margins follow any path determined by a growing expotential function, following a compound rate. Subsequently it was checked whether output volume is corrected due to development of actual versus expected (resulting from the Hotelling Rule) margin values. Selected companies were near indifferent to this parameter while taking decisions in area of volumes supplied. Neither there is no evidence of relation between changes in output and margins. Finally, it was checked whether differences between expected and actual margins’ growth paths could be described by a linear function, resulting from consequent adoption of a risk rate component. Here neither any evidence was found. In conclusion no support for the Hotelling rule was identified.
Go to article

Authors and Affiliations

Robert Uberman
1
ORCID: ORCID

  1. Andrzej Frycz Modrzewski Krakow University, Kraków, Poland
Download PDF Download RIS Download Bibtex

Abstract

The article deals with issues related to the application of statistical methods used in the valuation process. The proposed algorithm for real estate valuation can be used in the statistical market analysis method in the process of mass appraisal. The algorithm uses a multiple linear regression model. Legal considerations indicate the need for such an algorithm for the determination of the value of representative properties. Due to the large size of the database of comparables, the proposed algorithm can be used only to appraise typical properties. A good statistical model is parsimonious, that is, it uses as few mathematical concepts as possible in a given situation. A model should extract what is systematic in the results observed, allowing for the presence of purely random deviations. The article discusses the basic principles of building a good statistical model. Attention is drawn to the number of market attributes that are entered into the model and the range of their values. As few explanatory variables as possible should be entered into the model to explain the phenomenon under study. Explanatory variables are only those characteristics of the property that differentiate prices in a given market defined and adopted by the appraiser as the basis for valuation. The article highlights the importance of taking into account market changes during the period under study.
Go to article

Authors and Affiliations

Agnieszka Bitner
1
ORCID: ORCID
Małgorzata Frosik
1
ORCID: ORCID

  1. University of Agriculture in Krakow, Krakow, Poland
Download PDF Download RIS Download Bibtex

Abstract

The dual nature of water (acqua) in feminine portals – The work is an attempt to show how the concept of acqua (water) is conceptualized in Italian persuasive discourse regarding the health and beauty of modern women. The conducted research mainly based on the notion of imagery in language (Langacker) and linguistic picture of the world (Bartmiński) reveals a number of semantic and axiological aspects involved by the analyzed concept. The valuation of acqua is also noteworthy, as water functions in the linguistic system as a neutral concept, while the corpus subjected to the analysis shows that it has a double face: it is benevolent and destructive at the same time.

Go to article

Authors and Affiliations

Aleksandra Paliczuk
Agnieszka Pastucha-Blin
Download PDF Download RIS Download Bibtex

Abstract

The homogenous properties – as flats are – have the set of key features that characterizes them. The area of a flat, the number of rooms and storey number where it is located, the technical state of a building, and the state of the vicinity of the blocks of flats assessed. The database comprises 222 flats with their transaction prices on the secondary estate market. The analysed flats are located in a certain quarter of Wrocław city in Poland. The database is large enough to apply machine learning for successful price predictions. Their close locations significantly lower the influence of clients’ assessments of the attractiveness of the location on the flat’s price. The hybrid approach is applied, where classifying precedes the solution of the regression problem. Dependently on the class of flats, the mean absolute percentage error achieved through the calculations presented in the article varies from 4,4 % to 7,8 %. In the classes of flats where the number of cases doesn’t allow for machine predicting, multivariate linear regression is applied. The reliable use of machine learning tools has proved that the automated valuation of homogenous types of properties can produce price predictions with the error low enough for real applications.
Go to article

Authors and Affiliations

Hubert Anysz
1
ORCID: ORCID
Monika Podwórna
2
Nabi Ibadov
1
ORCID: ORCID
Kunibert Lennerts
3
Kostiantyn Dikarev
4

  1. Warsaw University of Technology, Faculty of Civil Engineering, Al. Armii Ludowej 16, 00-637 Warsaw, Poland
  2. Wrocław University of Science and Technology, Faculty of Civil Engineering , Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
  3. Karlsruhe Institute of Technology, Institute of Technology and Management in Construction, Gotthard-Franz-Street 3, 76131 Karlsruhe, Germany
  4. Prydniprovska State Academy of Civil Engineering and Architecture, Department of Construction Technology, 24a, Chernyshevskogo St., Dnipro, 49005, Ukraine
Download PDF Download RIS Download Bibtex

Abstract

In modern conditions of urban development, there is a need to improve the technology for determining the investment attractiveness of urban lands by developing a method and models for assessing its impact, which will be based on the construction of a two-level system of indicators, which will determine the integral investment criterion and develop guidelines for improving the investment attractiveness of urban lands. As a result of the research, the value of the integral indicator of urban land investment attractiveness was determined, which allowed to apply it in the system of normative monetary valuation of urban land and to develop methodological recommendations for improving the efficiency of its investment attractiveness assessment. A method for assessing the investment attractiveness of urban land, as the main element of technology, based on the determination of indicators for assessing the integral criterion for the development of guidelines for improving the urban land investment attractiveness is developed. By the value of the integral criterion, the integral indicators of the potential investment attractiveness of urban lands are determined, considering the changes in the normative monetary value of the lands of settlements and the level of investment attractiveness of the regional centers of Ukraine is determined.

Go to article

Authors and Affiliations

Kostiantyn Mamonov
ORCID: ORCID
Serhii Nesterenko
Yuliia Radzinskaya
Alena Palamar
ORCID: ORCID
Download PDF Download RIS Download Bibtex

Abstract

The article is devoted to a topical scientific problem in modern conditions – valuation of land in Ukraine. The imperfection of the existing approaches requires further research on the changing conditions of land use and their impact on land pricing.
A methodology for determining the market value of reclaimed land based on a differentiated assessment of its productivity through crop yields is proposed, taking into account natural and climatic zones and other conditions of a particular region. The basis of the methodology is the application of long-term forecast and a set of forecast and simulation models, in particular the model of area climatic conditions and the model of water regime and water regulation technologies on reclaimed land. At that the crop yield model as a complex multiplicative type model takes into account all main factors influencing crop yield formation: weather, climatic and soil conditions, cultivation techniques, water regime of reclaimed land, etc.
The proposed approaches were tested by the method of large – scale machine experiment using a land plot in the zone of Western Polissya of Ukraine as the example. The obtained results indicate that there is a differentiation in land value, which is a proportional derivative of the yield of cultivated crops depending on the conditions of their cultivation. The variation range of the studied indicators in relative form by the ratio of maximum and minimum values to the weighted average value is for cultivated crops – 393%, and for the above soils – 44.6%. Thus, within one object, the estimated value of land in view of available soils and cultivated crops varies from USD2456∙ha–1 to USD4005 ∙ ha–1, averaging USD3522 ∙ ha–1.
Go to article

Authors and Affiliations

Anatoliy Rokochinskiy
1
ORCID: ORCID
Pavlo Volk
1
ORCID: ORCID
Nadia Frolenkova
1
ORCID: ORCID
Olha Tykhenko
2
ORCID: ORCID
Sergiy Shalai
1
ORCID: ORCID
Ruslan Tykhenko
2
ORCID: ORCID
Ivan Openko
2
ORCID: ORCID

  1. National University of Water and Environmental Engineering, Rivne, Ukraine
  2. National University of Life and Environmental Sciences of Ukraine, Str. Vasylkivska, 17, 03040, Kyiv, Ukraine
Download PDF Download RIS Download Bibtex

Abstract

Irrigation network maintenance is very important to ensure the function of irrigation run well. Therefore, maintenance fee is necessary to maintain the irrigation network. The problem is the maintenance cost of irrigation network is expensive, the second highest cost after rehabilitation costs. Thus, participation of farmers in irrigation network maintenance is essential. One of participation by farmers is in the form of regular fees. This study aims to determine the number of fees farmers are willing to pay to maintain irrigation networks through the willingness-to-pay approach. This study was conducted in the irrigation area of the Gonggang reservoir in Magetan District. The subject is farmers who use irrigation – the data collection technique used by observation, interview, questionnaire, and documentation. The data analysis technique used is the contingent valuation method with steps (1) determining the hypothetical market, (2) obtaining bids, (3) estimating average willingness to pay, (4) estimating bid curves, and (5) aggregating data. The result shows that the amount of farmers’ willingness to pay the maintenance fees for irrigation networks at Gonggang reservoir irrigation area in Magetan District by using the contingent valuation method is IDR 90,621 (USD 5.45) for each hectare for each planting period with total willingness to pay in the population of IDR 116,188,708 (USD 7,951.59) for each planting period.
Go to article

Authors and Affiliations

Cindy Puspitasari
1
ORCID: ORCID
Joko Sutrisno
1
ORCID: ORCID
Ernoiz Antriyandarti
1
ORCID: ORCID

  1. Universitas Sebelas Maret, Faculty of Agriculture, Study Program of Agribusiness, Jalan Ir. Sutami 36 57126 Surakarta, Central Java, Indonesia
Download PDF Download RIS Download Bibtex

Abstract

The article presents results of quality class determination and regulatory and monetary valuation of agricultural land in the steppe soils irrigation zone using the Karmanov’s methodology of soil and climatic quality class determination and au-thor's methodology of ecological, agro-ameliorative and climatic soils quality class determination. Based on the results of spatial modeling, a series of maps was created and characteristics of ecological, agro-ameliorative and relief and climatic components of soils quality class were presented based on the example of the Kherson Region, Ukraine. According to the results soil and climatic quality class determination, it is established that the value of the class varies from 25 to 46 points; the regulatory and monetary value of agricultural land varies from USD 490 per 1 ha for dark chestnut and chestnut al-kaline soils up to USD1,360 per ha for ordinary chernozem. According to the results of ecological, agro-ameliorative and climatic soils quality class determination, it is established that the value of the class varies from 6 to 59 points; the regulato-ry and monetary value of agricultural land varies from USD145 per 1 ha for degraded and highly saline chestnut soils up to USD2,060 per ha for irrigated southern chernozem. The suggested methodology of soil quality class calculation can have multiple purposes. It is intended to be used for different physiographic conditions of land use to develop adaptive soils pro-tection measures at different territorial levels of agricultural production management with the overall objective of ensuring sustainable land use.
Go to article

Bibliography

BEZNITSKA N.V. 2017. Modelyuvannya g'runtovo-klimatychnogo potentsyalu sil's'kogospodars'kykh zemel' Khersons'koyi oblasti iz zastosuvannya GIS-tekhnologyi [Modeling of soil and climatic potential of agricultural lands of the Kherson region using GIS-technology]. Visnyk Natsional'nogo universytetu vodnogo gospodarstva ta pryrodokorystuvannja. No. 4 (76) p. 31–43.
BREUS D., YEVTUSHENKO O., SKOK S., RUTTA O. 2019. Retrospective studies of soil fertility change on the example of the Kherson region (Ukraine). International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. Vol. 19 (5.1) p. 645–652. DOI 10.5593/sgem2019/5.1/S20.080.
BURYAK ZH.A., GRIGOREVA O.I., PAVLYUK YA.V. 2014. GIS maintenance of rural territories geoplanning under basin principles. International Journal of Advanced Studies. Vol. 4 (2) p. 56–60. DOI 10.12731/2227-930X-2014-2-8.
DOMARATSKY YE.O., ZHUYKOV O.G., IVANIV M.O. 2018. Influence of sowing periods and seeding rates on yield of grain sorghum hybrids under regional climatic transformations. Indian Journal of Ecology. Vol. 45(4) p. 785–789.
DUDIAK N.V., PICHURA V.I., POTRAVKA L.A., STRATICHUK N.V. 2019a. Geomodelling of destruction of soils of Ukrainian steppe due to water erosion. Journal of Ecological Engineering. Vol. 20(8) p. 192–198. DOI 10.12911/22998993/110789.
DUDIAK N.V., PICHURA V.I., POTRAVKA L.A., STROGANOV A.A. 2020. Spatial modeling of the effects of deflation destruction of the steppe soils of Ukraine. Journal of Ecological Engineering. Vol. 21(2) p. 166–177. DOI 10.12911/22998993/ 116321.
DUDIAK N.V., POTRAVKA L.A., STROGANOV A.A. 2019b. Soil and climatic bonitation of agricultural lands of the steppe zone of Ukraine. Indian Journal of Ecology. Vol. 46(3) p. 534–540.
JENSENA J.L., SCHJØNNINGA P., WATTSB C.W., CHRISTENSENA B.T., OBOURAC P.B., MUNKHOLMA L.J. 2020. Soil degradation and recovery – Changes in organic matter fractions and structural stability. Geoderma. Vol. 364. DOI 10.1016/ j.geoderma.2020.114181.
Kabinet Ministriv Ukrayiny 2016. Metodyka normatyvnoyi hroshovoyi otsinky zemelʹ silʹsʹkohospodarsʹkoho pryznachennya [Methods of normative monetary valuation of agricultural land] [online]. November 16, 2016. No. 831. [Access 20.03.2020]. Available at: https://zakon.rada.gov.ua/laws/show/831-2016-%D0%BF
KARMANOV I.I. 1980. Plodorodye pochv SSSR [Soil fertility of the USSR]. Moscow. Kolos pp. 224.
KARMANOV I.I., BULGAKOV D.S. 2012. Metodika pochvenno-agroklimaticheskoy otsenki pakhotnykh zemel' dlya kadastra [Methodology of soil and agroclimatic assessment of arable land for cadaster]. Moscow. Rossiyskaya akademiya sel'skokhozyaystvennykh nauk, Gosudarstvennoe nauchnoe uchrezhdeniye Pochvennyy institut imeni V.V. Dokuchayeva. ISBN 978-5-904761-32-5 pp. 119.
KARMANOV I.I., BULGAKOV D.S., SHISHKONAKOVA E.A. 2013. Sistema otsenki prirodno-antropogennykh vozdeystviy na izmeneniye plodorodiya pochv pakhotnykh zemel' na osnove pochvenno-agroklimaticheskogo indeksa [An assessment system of natural and anthropogenic effects on changes]. Byulleten' Pochvennogo instituta imeni V.V. Dokuchaeva. No. 72 pp. 65–83.DOI 10.19047/0136-1694-2013-72-65-83.
LI J., CHEN H., ZHANG C. 2020. Impacts of climate change on key soil ecosystem services and interactions in Central Asia. Ecological Indicators. Vol. 116. DOI 10.1016/j.ecolind.2020.106490.
LISETSKII F., CHEPELEV O. 2014. Quantitative substantiation of pedogenesis model key components. Advances in Environmental Biology. Vol. 8(4) p. 996–1000.
LISETSKII F.N. 2012. Soil reproduction in steppe ecosystems of different ages. Contemporary Problems of Ecology. Vol. 5(6) p. 580–588. DOI 10.1134/S1995425512060108.
LISETSKII F.N., PICHURA V.I., BREUS D.S. 2017a. Use of geoinformation and neurotechnology to assess and to forecast the humus content variations in the steppe soils. Russian Agricultural Sciences. No. 2(43) p. 151–155. DOI 10.1134/S1995425512060108.
LISETSKII F.N., STOLBA V.F., PICHURA V.I. 2017b. Late-Holo¬cene palaeoenvironments of Southern Crimea: Soils, soil-climate relationship and human impact. Holocene. Vol. 27(12) p. 1859–1875. DOI 10.1177/0959683617708448.
MEDVEDEV V.V. 2009. Neodnorodnost' pochv i tochnoye zemledeliye [Soil heterogeneity and precision farming]. Part 2. Kharkov. KP «Gorodskaya topografiya». ISBN 978-966-8726-50-7 pp. 260.
MEDVEDEV V.V., PLISKO I.V. 2006. Bonitirovka i kachestvennaya otsenka pakhotnykh zemel' Ukrainy [Bonitation and qualitative assessment of arable land in Ukraine]. Kharkov. 13 tipografiya. ISBN 966-8726-31-6 pp. 386.
PICHURA V.I., DOMARATSKY Y.A., YAREMKO YU.I., VOLOCHNYUK Y.G., RYBAK V.V. 2017. Strategic ecological assessment of the state of the transboundary catchment basin of the Dnieper River under extensive agricultural. Indian Journal of Ecology. Vol. 44 (3) p. 442–450.
PICHURA V.I., POTRAVKA L.A., DUDIAK N.V., SKRYPCHUK P.M., STRATICHUK N.V. 2019. Retrospective and forecast of heterochronal climatic fluctuations within territory of Dnieper Basin. Indian Journal of Ecology. Vol. 46(2) p. 402–407.
RASMUSSEN C., TABOR N.J. 2007. Applying a quantitative pedogenic energy model across a range of environmental gradients. Soil Science Society of America Journal. Vol. 71(6) p. 1719–1729. DOI 10.2136/sssaj2007.0051.
STORIE R.E. 1978. Storie index soil rating. Division of Agricultural Sciences. Vol. 32(3) p. 1–4.
TSYBIKDORZHIEV TS.TS., KHUBRAKOVA B.TS., GONCHIKOV B-M.N. 2009. Bonitirovka i kadastrovaya otsenka pochv Dzhidinskogo rayona Respubliki Buryatiya [Valuation and cadastral valuation of soils of the Dzhidinsky district of the Republic of Buryatia]. Vestnik Buryatskoy gosudarstvennoy sel'skokhozyaystvennoy akademii im. V.R. Filippova. No. 3(16) p. 143–150.
ZELENSKAYA E., PICHURA V., DOMARATSKY YE. 2018. Priorities of agroecological monitoring of the composition of soil trace elements taking into account the peculiarities of its formation over time. Journal of Engineering and Applied Sciences. Vol. 13 p. 5807–5813. DOI 10.3923/jeasci.2018.5807.5813.

Go to article

Authors and Affiliations

Vitalii Pichura
1
ORCID: ORCID
Larisa Potravka
1
ORCID: ORCID
Nataliia Dudiak
1
ORCID: ORCID
Alexander Stroganov
1
Olha Dyudyaeva
1

  1. Kherson State Agrarian and Economic University, Stritens'ka str. 23, Kherson, 73006, Ukraine
Download PDF Download RIS Download Bibtex

Abstract

Exploring the drivers of changes in ecosystem services is crucial to maintain ecosystem functionality, especially in the diverse Central Citarum watershed. This study utilises the integrated valuation of ecosystem service and trade-offs (InVEST) model and multiscale geographically weighted regression (MGWR) model to examine ecosystem services patterns from 2006 to 2018. The InVEST is a hydrological model to calculate water availability and evaluate benefits provided by nature through simulating alterations in the amount of water yields driven by land use/cover changes. Economic, topographic, climate, and vegetation factors are considered, with an emphasis on their essential components. The presence of a geographical link between dependent and explanatory variables was investigated using a multiscale geographic weighted regression model. The MGWR model is employed to analyse spatial impacts. The integration of both models simplified the process and enhanced its understanding. The findings reveal the following patterns: 1) decreasing land cover and increasing ecosystem services demand in the watershed, along with a decline in water yield, e.g. certain sub-districts encounter water scarcity, while others have abundant water resources; 2) the impact of natural factors on water yield shifts along vegetation > climate > topography (2006) changes to climate > vegetation > topography (2018).
Go to article

Authors and Affiliations

Jaka Suryanta
1
ORCID: ORCID
Irmadi Nahib
1
ORCID: ORCID
Fadhlullah Ramadhani
2
ORCID: ORCID
Farid Rifaie
2
ORCID: ORCID
Nawa Suwedi
1
ORCID: ORCID
Vicca Karolinoerita
2
ORCID: ORCID
Destika Cahyana
3
ORCID: ORCID
Fahmi Amhar
2
ORCID: ORCID
Suprajaka Suprajaka
4
ORCID: ORCID

  1. Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Jalan Raya Jakarta Bogor Km. 47 Cibinong, Bogor, West Java 16911, Indonesia
  2. Research Center for Geoinformatics, National Research and Innovation Agency of Indonesia (BRIN), Jalan Raya Jakarta-Bogor Km. 46, Cibinong, Bogor, West Java 16911, Indonesia
  3. Research Center for Food Crops, National Research and Innovation Agency of Indonesia (BRIN), Jalan Raya Jakarta Bogor Km. 47, Cibinong, Bogor, West Java 16911, Indonesia
  4. Center for Research, Promotion and Cooperation, Geospatial Information Agency, Jalan Raya Jakarta-Bogor Km. 46, Cibinong, Bogor, West Java 16911, Indonesia

This page uses 'cookies'. Learn more