DSpace Collection:
http://hdl.handle.net/20.500.12188/155
2024-03-28T21:02:19ZAgro-ecological atlas of the Republic of North Macedonia
http://hdl.handle.net/20.500.12188/26315
Title: Agro-ecological atlas of the Republic of North Macedonia
Authors: Aksoy, E., Arsov, S., Mincev, I., Fang C.
Abstract: Agriculture has an important role in North Macedonia and in 2017 it accounted for 7.9 percent of the gross domestic product (GDP) in the country. However, agriculture’s share of the country’s GDP has been decreasing for the past decade, and the need to improve agricultural productivity has become an important challenge.
For this purpose, the Ministry of Agriculture, Forestry and Water Economy (MAFWE) with the support of FAO initiated to adapt FAO’s agro-ecological zones (AEZ) methodology to local needs in the country. The effort was undertaken by forming a wide technical working group with representatives from academia, the Hydro-Meteorological Service, State Statistics Office, and the Ministry of Environment and Spatial Planning.
The delineation of agro-ecological zones specific to crops presents a useful preliminary evaluation of the country’s agricultural potential and provides a tool for regional and environmentally sustainable development planning. Agro-ecological zoning refers to the division of an area of land into land resource mapping units, having a unique combination of landform, soil and climatic characteristics, and/or land cover having a specific range of potentials and constraints for agricultural land use.
This atlas shows the results collected during this study and the related developed maps.2020-01-31T00:00:00ZSoil erosion rates in two successive reservoir catchments: Spilje and Globocica reservoir
http://hdl.handle.net/20.500.12188/22992
Title: Soil erosion rates in two successive reservoir catchments: Spilje and Globocica reservoir
Authors: Mincev, Ivan; Trendafilov, Aleksandar; Blinkov, Ivan; Ivanoski, Dragan
Abstract: The catchments of the reservoirs Spilje and Globocica are positioned in the western part of Macedonia. This part is known for the more than average rainfall (800-900 mm/annually) for the country and large portion of the catchment is consisted of forests and natural grasslands. In the past, this region had been a huge economic center. As a part of the process of migration, many of the mountainous regions of Macedonia have been practically deserted. This had a huge effect on the environment and it largely diminished the human impact. The catchment of the reservoir Globocica is beginning from the outflow of the river Drim from the Ohrid lake. The main water source for this reservoir is the river Drim and some minor tributaries. The catchment of the Spilje reservoir is beginning from the Globcica dam, continuing the flow of the Drim river and also form north the second main tributary is Radika river. The two catchments were mapped for erosion according to the EPM method by Gavrilovic. The two erosion maps created for the two reservoir catchments show very different results. The catchment of the reservoir Globocica is one of the most preserved catchments from soil erosion point of view with average erosion coefficient (z) of 0.29, specific annual production of erosive sediment is 394 m3/km2/ann., and the specific annual transport of erosive sediment is 247 m3/km2/ann. On the other hand the catchment of the reservoir Spilje is one of the most erosive areas in the country, with average erosion coefficient (z) of 0.44, specific annual production of erosive sediment is 776 m3/km2/ann., and the specific annual transport of erosive sediment is 541 m3/km2/ann.2017-01-01T00:00:00ZMeasuring v.s modeling sediment, case study: Kalimanci reservoir
http://hdl.handle.net/20.500.12188/22991
Title: Measuring v.s modeling sediment, case study: Kalimanci reservoir
Authors: Mincev Ivan
Abstract: The modeling of sediment discharge in ungagged basins has been always a challenge. The aim
of this paper is to compare two modeling approaches with measured data. The data for the deposited sediment was provided by bathymetric measurements of the Kalimanci reservoir. It was calculated that mean
annually sediment deposition is 214.325 m3/year. The first modeling approach was established using the
Gavrilovic method. The catchment of the reservoir was subdivided into smaller sub-catchments and using
GIS and remote sensing, the sediment discharge and sediment production were calculated. It was calculated
that annually 202.551 m3/year sediment was deposited in the reservoir. The main part of the sediment was
distributed by the river Bregalnica, 127.490 m3/year or 63%. The second approach was established by employing hydraulic modeling (HEC-RAS). The main scope of this approach was to establish the deposition
of the sediment in the river Bregalnica and how much of the sediment is reaching the reservoir. As sediment
input in the HEC model was used the data for sediment discharge of all the river and torrent tributaries of
the river Bregalnica, calculated also with the Erosion Potential Method by Gavrilovic. The sediment discharge using the second approach was calculated on 152.231 m3/year. It was established that 75% of the
input sediment in the river Bregalnica is deposited in the hydro-morphologic extension of the river, mainly
in the valleys, where the slope of the river bed is reduced. It can be concluded that the calculated and measured values are similar and beside this all three approaches generate different insight of the natural process.2018-01-01T00:00:00ZSoil Erosion and Torrent Control in Western Balkan Countries
http://hdl.handle.net/20.500.12188/22989
Title: Soil Erosion and Torrent Control in Western Balkan Countries
Authors: Blinkov, Ivan; Kostadinov, Stanimir; Mincev, Ivan; Petrovic, Ana
Abstract: The Western Balkans is a neologism coined to describe the countries of "ex-Yugoslavia (minus Slovenia and Croatia) plus Albania". The region includes: Serbia, Bosnia and Herzegovina, Montenegro, Macedonia, Kosovo** and Albania. Western Balkan Countries (WBC) are located in Balkan Peninsula in Southeast Europe.
Soil erosion has been occurring over the geological time. Inappropriate human activities accelerate this process. Soil erosion by water is a widespread problem throughout Europe. The South and Southeast regions of Europe are significantly prone to water erosion. In parts of the region, erosion has reached a stage of irreversibility and in some places erosion has practically ceased because there is no soil left. Scientists from the Balkan countries faced with the erosion problem for years, paid significant attention to solving problems associated with erosion.
The principal goal of this review paper is to present the situation regarding erosion and torrent control in the Western Balkan Countries.
The basic methodological approach in this paper is an analysis of secondary data, using the method of "content analysis” of various data sources. This method is used for research of written documents. Before starting the analysis it was decided what would be the sample for analysis, and the sample can be a word, sentence, data, map or other item that corresponds with the survey. Inductive and deductive qualitative analyses were done.
The mean annual erosion intensity in the WBC is 7.03 tha-1 and varies from 2.7 (Kosovo*) up to 18.7 tha-1 (Albania). The total annual soil losses are 143.5x106 t. It means that 7.7% of the total annual soil losses in Europe is originating from the WBC and the average erosion intensity in the region is 2.42 times higher than the European level. As much as 1,539 torrents are registered in Macedonia, 935 in BIH and more than 12,000 in Serbia. Torrential flooding are also frequent in Albania and Kosovo*.
Erosion and torrent control has a long tradition in the region for more than 100 years. A common characteristics for all countries is that during the socialism period, there was a strong effort to control soil erosion and torrents. However, during the period after the fall of the old socialistic system, erosion and torrent control efforts decreased rapidly.
Several erosion and torrent control works, structural or non-structural, were implemented in the countries in the region as follow: technical –ameliorative, agro-ameliorative, forest-ameliorative, hydraulic structures, administrative, educative and, economic.
Intensive erosion processes and the torrent flood catastrophes happened in the latest period with a significant human fatalities and economic costs of losses and damages is an indicator of the high importance of this problem and the necessity of urgent erosion and torrent control measures.2022-01-01T00:00:00Z