Climate Changes and Its Impact on Agriculture – The Case Study of Bulgaria

Ivanova, Nedka; Mishev, Plamen

doi:10.5772/50861

Cited by 3 publications

(4 citation statements)

References 12 publications

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“…Typically, weather data are based on retrospective analysis and do not include a forecast. Thus, it is important to envision regular updates of TMY datasets [39].…”

Section: Weather Data For Solar Potentialmentioning

confidence: 99%

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Large-Scale Solar Potential Analysis as a Use Case of Urban Digital Twins

Shirinyan,

Petrova-Antonova

2024

Preprint

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Solar radiation impacts diverse aspects of city life, such as harvesting energy with PV panels, passive heating of buildings in winter, cooling loads of air-conditioning systems in summer, and urban microclimate. Urban digital twins and 3D city models can support solar studies in the process of urban planning and provide valuable insights for data-driven decision support. This study examines the calculation of solar incident radiation at the city scale in Sofia using remote sensing data for the large shading context in a mountainous region and 3D vector building data. The building footprints and the terrain are preprocessed using GIS. The solar calculation uses a raytracing algorithm in 3D CAD at the city scale. To evaluate the performance, two cases were considered at the city and district scale, respectively. The total face count of meshes for the simulations constituted approximately 2 000 000 faces. 64379 roofs for the whole city and 4796 buildings for one district were selected. All calculations were performed in one batch and visualized in a 3D web platform. Using a 3D CAD environment establishes a seamless process of updating 3D models and simulations while preprocessing in GIS ensures working with large-scale datasets. The proposed method showed moderate computation time for both cases and could be extended to include reflected radiation and dense photogrammetric meshes in the future.

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“…Typically, weather data are based on retrospective analysis and do not include a forecast. Thus, it is important to envision regular updates of TMY datasets [39].…”

Section: Weather Data For Solar Potentialmentioning

confidence: 99%

“…While live updates are not part of the method in the case of large models, the software itself is specifically designed to give dynamic feedback for small 3D datasets. TMY weather data should be compared to local measurements and modified if needed [39]. In addition, other raytracing engines can be explored.…”

Section: Limitationsmentioning

confidence: 99%

Large-Scale Solar Potential Analysis as a Use Case of Urban Digital Twins

Shirinyan,

Petrova-Antonova

2024

Preprint

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“…As a result the average annual temperature variation in recent years is between 11-12°C. The average annual rainfall on the territory of the country decreases to 672 mm and varies considerably per months (Ivanova and Mishev, 2012). This therefore greatly affects the growth and development of field crops (Alexandrov and Hoogenboom, 2000;Alexandrov, 2008).…”

Section: Introductionmentioning

confidence: 99%

Agro-ecological study of forage productivity of some annual untraditional drought-resistant fodder species for foothill regions in Central Balkan Mountains (Bulgaria)

Lingorski¹,

Kertikov

2014

Emir. J. Food Agric

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Comparative testing of some annual untraditional drought-resistant cereal (foxtail millet and true millet) and legume crops (bitter vetch and chickpea) was conducted during 2011-2013 in the Research Institute of Mountain Stockbreeding and Agriculture (RIMSA) in Troyan (Bulgaria). The largest part of the forage yields had the stems in comparison with leaves and inflorescences. The chickpea had more green mass (12.82 t ha -1 ) and dry mass (3.27 t ha -1 ) yields than bitter vetch -respectively by 18.46% and 18.48%. Regarding the cereal crops it turned out that the true millet had more yields (12.98 t ha -1 green mass and 3.32 t ha -1 dry matter) than the foxtail millet (respectively 16.80% and 11.14%). Judging from the factual data it can be considered that the forage species studied in details are suitable for ecological fodder preparation in foothill regions of the Central Balkan Mountains in Bulgaria.

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“…In the last 10-20 years has increasingly seen the adverse effects of global warming on plant species both in Europe [CLINE, 2008;CISCAR, 2009;IGLESIAS et al, 2009] and in Bulgaria in particular [ALEXANDROV and HOOGENBOOM, 2000;ALEXANDROV, 2008;IVANOVA and MISHEV, 2012] . This suggests timely establishment of herbage fodder species suitable for growing under dry conditions [WILKINS and VIDRICH, 2000] .…”

Section: Introductionmentioning

confidence: 99%

Some Biometric Characteristics and Seed Productivity of Annual Drought–resistant Forage Species for Foothill Regions of Central Northern Bulgaria

Lingorski¹,

Kertikov²

2014

bjbabe

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Abstract. During the period 2011-2013 in Research Institute of Mountain Stockbreeding and Agriculture, Troyan (Bulgaria) the comparative testing of some annual drought-resistant cereal and legume pure crops (bitter vetch, chickpea, foxtail millet, true millet) was accomplished. It was found that the determining parameters the quantity of seed yields (weight of seeds in 1 inflorescence and weight of 1000 seeds) in cereals had at smaller values than legume crops. In respect of the yield of seeds can be deemed that they amount to minimum values characteristic of the corresponding forage crop. The reasons for this are the typical soils (light-gray forest pseudopodzolic with acid reaction, poorly stocked with essential nutrients, especially nitrogen) for the region, drought climate in the region in recent years and the absence of fertilization in this experiment. For this reasons the foothill regions of the Central Balkan Mountains can be considered unsuitable for ecological seed production of studied annual forage crops.

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Climate Changes and Its Impact on Agriculture – The Case Study of Bulgaria

Cited by 3 publications

References 12 publications

Large-Scale Solar Potential Analysis as a Use Case of Urban Digital Twins

Large-Scale Solar Potential Analysis as a Use Case of Urban Digital Twins

Agro-ecological study of forage productivity of some annual untraditional drought-resistant fodder species for foothill regions in Central Balkan Mountains (Bulgaria)

Some Biometric Characteristics and Seed Productivity of Annual Drought–resistant Forage Species for Foothill Regions of Central Northern Bulgaria

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