Stelian Slavkov Dimitrov

• Doctor of Philosophy
• Professor (Associate) at Sofia University "St. Kliment Ohridski"

Citation: Dimitrov, S.; Borisova, B.; Ihtimanski, I.; Radeva, K.; Iliev, M.; Semerdzhieva, L.; Petrov, S. Rapid Mapping: Unmanned Aerial Vehicles and Mobile-Based Remote Sensing for Flash Flood Consequence Monitoring (A Case Study of Tsarevo Municipality, South Bulgarian Black Sea Coast). Urban Sci. 2024, 8, 255. Abstract: This research seeks to de...

The urban heat island effect (UHI) is among the major challenges of urban climate, which is continuously intensifying its impact on urban life and functioning. Against the backdrop of increasingly prolonged heatwaves observed in recent years, practical questions about adaptation measures in cities are growing—questions that traditional meteorologic...

The urban heat island effect (UHI) is among the major challenges of urban climate, which is continuously intensifying its impact on urban life and functioning. Against the backdrop of increasingly prolonged heatwaves observed in recent years, practical questions about adaptation measures in cities are growing - questions that traditional meteorolog...

Citation: Borisova, B.; Semerdzhieva, L.; Dimitrov, S.; Valchev, S.; Iliev, M.; Georgiev, K. Geospatial Prioritization of Terrains for "Greening" Urban Infrastructure. Land 2024, 13, 1487. Abstract: This study aims to scientifically justify the identification of suitable urban properties for urban green infrastructure (UGI) interventions to optimiz...

Over the last ten years, Bulgaria's forest areas have been under almost year-round fire activity, severely impacting the Natura 2000 sites: Managing forests and maintaining traditional links between people and nature in mountain sites is becoming increasingly challenging. However, the National Methodology for determining the risk of forest fires (p...

Citation: Dimitrov, S.; Iliev, M.; Borisova, B.; Semerdzhieva, L.; Petrov, S. UAS-Based Thermal Abstract: The urban heat island (UHI) and its intensity is one of the phenomena that are of determining importance for the comfort of living in cities and their sustainable development in the face of deepening climate change. The study is objectively dif...

The urban heat island (UHI) and its intensity is one of the phenomena that are of determining importance for the comfort of living in cities and their sustainable development in the face of deepening climate change. The study is objectively difficult due to the large dynamics like land cover and the considerable diversity of land use patterns in ur...

The aim of the present study is to present an integrated approach based on the use of both classical remote sensing data and data generated by unmanned aerial systems (UAS) for the purpose of precise mapping and assessment of vertical deformations of large-scale landslides structure (160 ha) located in the Eastern Rhodopes region, Bulgaria. The eva...

This study presents a methodological approach and the results of a geospatial localization analysis of selected residential areas of the Sofia Municipality, which are highly vulnerable in terms of ambient air quality (AQ). The objective is a scientifically sound selection of locations for the construction of additional green infrastructure (GI) ele...

The torrential catchments located on the northern slopes of Belasitsa Mountain (SW Bulgaria), in the area of Petrich town were affected by an intense rainfall event in December 2021 that triggered a cascade of hazard processes like floods, landslides, debris flows/floods that caused major damage to the road network, properties, and buildings, showi...

Intensive forest afforestation with native pine species was developed in the 1960s on degraded and deforested lands in the region of the Eastern Rhodopes (south-eastern Bulgaria). Severe damage by wet snow was registered in the coniferous forests of the Rhodopes in March 2015. In the following years, bark beetle attacks were registered on the broke...

The article aims to explore natural heritage as a socio-ecological phenomenon. The definitions and cycle of development of the concept of natural heritage is explained. The process of provision and demand of ecosystem services that benefit socio-environmental systems is presented to illustrate how an element of the natural system becomes natural he...

The Chuprene Reserve was created in 1973 to preserve the natural coniferous forests in the Western Balkan Range in Bulgaria. The first infestations by European spruce bark beetle (Ips typographus) were registered in Norway spruce (Picea abies) stands in the mid-1980s. The aim of this study is to assess the damages caused by I. typographus in the Ch...

Natural heritage (NH) includes natural features that can be described as outstanding universal value at a national level. It refers to the importance of ecosystems, biodiversity, and geodiversity for their existence value, and the ecosystems can be considered as the spatial units for its mapping and assessment. The ecosystem services (ES) concept p...

The study considers forest therapy as a tool for diversification of forest management. An up-to-date integrated approach for assessing and mapping potential of forest areas which could provide conditions for forest therapy services is developed and tested. It is based on combining data from the traditional forest inventory in Bulgaria and other ope...

Assessment and monitoring of health status in deteriorated forest stands in Gornata Koria and Chuprene Reserves in Western Balkan Range (Bulgaria) were conducted in 2017. An integrated approach (based on remote sensing technologies and terrestrial validation) was applied. A series of subsequent terrain observations were carried out in both protecte...

This article presents the results of the thermal survey of the capital of Bulgaria (Sofia) carried out in August 2019, with the application of an unmanned aerial system (UAS). The study is based on the concept of local climate zones (LCZs), taking into account the influence of the features of land use/land cover and urban morphology on the urban...

This article presents the results of the thermal survey of the capital of Bulgaria (Sofia) carried out in August 2019, with the application of an unmanned aerial system (UAS). The study is based on the concept of local climate zones (LCZs), taking into account the influence of the features of land use/land cover and urban morphology on the urban cl...

Monitoring the structure parameters and damage to trees plays an important role in forest management. Remote-sensing data collected by an unmanned aerial vehicle (UAV) provides valuable resources to improve the efficiency of decision making. In this work, we propose an approach to enhance algorithms for species classification and assessment of the...

This article aims to present the developed, adapted and applied methodology for the study, mapping, and evaluation of the effect and intensity of the urban heat island(UHI) within the urban space of the city of Sofia, while assessing its potential impact on the structure of the city and the prospects for its development and structure. For this purp...

This book focuses on new and innovative spatial approaches based on smart solutions and developed in the field of geography and related interdisciplinary fields such as urban and regional studies, landscape ecology and ecosystem services. It includes contributions from a conference dedicated to the 100th anniversary of the Bulgarian Geographical So...

Over the last decades, massive forest decline has occurred in many countries because of prolonged periods of drought and anomalous climatic phenomena. Studies show that in most cases this is the result of a combination of unfavourable climatic conditions and impact of harmful biotic factors, mostly insect pests and fungal pathogens. The massiveness...

The contemporary higher education in Bulgaria accumulated a number of problems over the years and they become a hindrance for it to successfully function as a driver of research and development activities, produce experts for the labor market and be a strategic business partner. Meanwhile, the higher schools have the potential to develop and influe...

The knowledge about urban green infrastructure (UGI) is important for maintaining the quality of life in cities, suburbs and the fringes of metropolitan areas. The perspective of rapid urban sprawl generates the need for establishment and use of adequate systems for monitoring the condition of the urban ecosystems and green spaces. This triggers th...

Urban ecosystems are the areas where built infrastructure covers a large proportion of the land surface but the main source of ecosystem services provision is the green infrastructure. This provision is very much dependent on the particular combination of green spaces such as parks or vegetation belts and paved areas such as buildings and streets....

Methodological guidelines for elaboration of regional spatial development schemes in Bulgaria

17 Декември 2014 г.

Over three years, the UNICREDS project sought to understand the current best practice for regions in developing knowledge-based economies. Central to the project is the premise that collaboration between government, academic and business communities – often known as the triplehelix partnership – can help regions plan Higher Education (HE) developme...

The overall objective of the project "Prototype GIS for analysis and protection of Bulgarian Archaeologigal heritage" is to elaborate a prototype geographic information system (GIS) for analysis and protection of the archaeological heritage in Bulgaria. The accomplishment of this objective will fill the gap in documenting archaeological sites in th...

This final report has been developed in relation to performance of a contract for internal consultancy services on adaptation and integration of the regional climate confidence index into the system for monitoring of Regional Development Plans in Bulgaria for the purposes of the DG “Strategic Planning of Regional Development and Administrative – Te...

Plan4all is a European project dealing with spatial planning data interoperability, har-monisation and Spatial Data Infrastructure building. The project is organised in nine work packages (WP), which are further structured into several tasks. This deliverable presents the results of task 2.2 which is part of WP2 – the state of the art analysis – an...

Geographic information technologies have become increasingly important for many aspects of our lives and business activities, including in higher education. Today they help us to understand spatial phenomena and their associated problems in an innovative way and support decision making processes in solving the complex and critical spatial, environm...

This paper discusses the importance of GIS and related geoinformation technologies in the processes of capacity building of geographers. In the analysis of different teaching programs, the accent is placed onto European practices in teaching GIS. The paper is trying to depict the situation of GIS education in Europe and to propose a view for the...

Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect...

During the year of celebration of the 111 th year of Academic Geography at Sofia University - 2009 the state of teaching and research is in a condition that can hardly be considered to be optimistic. It can be characterised with the constantly decreasing number of students, lack of qualified experts in many fields, old and frequently irrelevant met...