Disaster Risk Reduction Based on a GIS Case Study of the Čađavica River Watershed

Ristić, Ratko; Polovina, Siniša; Malušević, Ivan; Radić, Boris; Milčanović, Vukašin; Ristić, Mila

doi:10.15177/seefor.17-12

Cited by 6 publications

(6 citation statements)

References 17 publications

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“…This has become particularly important in developing countries, where population expansion and economic growth necessitate appropriate management of risks to natural resources, property, and human lives (Karimi et al 2019). Soil erosion, floods, landslides, and wildfires are the most frequent disasters in watersheds (Ristić et al 2017, Pourghasemi et al 2020, Lazarević et al 2023). Some natural disasters, like wildfires and landslides, are very difficult to prevent, while hazards such as soil erosion and floods can be significantly mitigated by anti-erosion measures in the basin (Petrović et al 2023).…”

Section: Natural Hazardsmentioning

confidence: 99%

Current Trends and Future Perspectives of Integrated Watershed Management

Vasić,

Caković,

Dragović

et al. 2024

SEEFOR

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The significance of Integrated Watershed Management (IWM) has increased in recent years due to its ecological, economic, and social implications. To align with these principles and achieve efficiency, watershed management necessitates the evaluation and integration of numerous diverse factors. This literature review aims to examine the current research trend in IWM and its association with various thematic elements. The identified thematic elements include water resources management, decision-making processes, agricultural and forested watersheds, soil management, natural hazards, stakeholder involvement, climate change, policy frameworks, cost management and risk analysis, livelihoods, ecosystem services, habitat and biodiversity conservation, and tourism. The predominant thematic elements were water resource management, decision-making, and agricultural and forested watersheds. The countries that were most frequently referred to in the examined literature were Ethiopia, China, the USA, and Iran. A synthesis of data obtained via the analysis of scientific research trends in the specified domain can serve as a basis for the establishment and strategizing of comprehensive watershed management. While it is important to consider all these aspects combined in IWM practice, it is also essential to have a comprehensive grasp of each factor as a vital step in integrating them. The participants involved in this endeavour, hailing from diverse professional backgrounds, must engage in close collaboration to successfully integrate the aforementioned aspects. The collaborative method can only have a chance of success if all participants involved demonstrate a high level of dedication. The level of dedication required should be grounded in a comprehensive understanding of the difficulties and demands that are mutually shared by all involved parties.

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Section: Natural Hazardsmentioning

confidence: 99%

Current Trends and Future Perspectives of Integrated Watershed Management

Vasić,

Caković,

Dragović

et al. 2024

SEEFOR

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“…Analysing, researching, and measuring the parameters in some basins in the Republic of Serbia over many years was the basis for the development of the erosion potential method [14]. In engineering practice, this method is a standard in the analysis of erosion process problems and the appearance of torrential flows, as well as the drawing up of technical documentation and other important water economy-related documents.…”

Section: Calculating the Sediment Production-the Erosion Potential Me...mentioning

confidence: 99%

“…In engineering practice, this method is a standard in the analysis of erosion process problems and the appearance of torrential flows, as well as the drawing up of technical documentation and other important water economy-related documents. It has been used for many decades in Serbia to process data related to soil erosion, where the coefficient Z is an important element [14]. The calculation of the sediment production is performed following the formula in Theorem 2, while the results of the research are shown in Tables 4 and 5.…”

Section: Calculating the Sediment Production-the Erosion Potential Me...mentioning

confidence: 99%

“…Around 15% of the total land in Europe is affected by water erosion [12], while the estimated annual land loss in the countries of the European Union is some 2.5 t/ha [13]. Almost 3% of the territory of Serbia is affected by excessive erosion; 7% is prone to severe erosion, 12% is affected by moderate erosion, 25% by rather weak erosion, and 52% by extremely weak erosion [14], which means that around 8 million cubic metres of eroded material end up in rivers and lakes. The loss of land goes beyond the political and administrative borders of Europe and stretches across the entire continent's surface.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Repurposing Forest Land on Erosion and Sediment Production. Case Study: Krupanj Municipality—Serbia

Bezbradica

Josimović

Milijić

2023

Forests

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Erosion is one of the main causes of soil degradation and sediment production. The amount of eroded material that reaches rivers and lakes depends on the terrain but also on the climatic and hydrological characteristics of the basin, as well as the applied land management method. The intensity of sediment production is in direct correlation with the land use type. Repurposing forest land as mining, urban and infrastructural development areas, etc., significantly affects sediment production. Shrinking of forests and unplanned agricultural production are just some of the factors that intensify erosion processes and increase the amount of eroded material, also triggering climate change and the onset of prolonged dry and rainy periods, which increase the risk of erosion in sloping terrain and intense sediment production. The paper presents the correlation between the change in the forest land use method, on the one hand, and soil erosion and sediment production, on the other, by analysing segments of river basins in the territory of the Serbian Municipality of Krupanj. The modelling of sediment production was based on data collected from the experimental territories. The method of erosion potential, data analysis, and procession in GIS surrounding were used for calculating sediment production in the experimental areas. The greatest loss of soil was perceived in the terrain with little or no vegetation on steep slopes covered with material prone to water erosion. The smallest production of sediment was noted in the terrain with vital forest vegetation. The results received point to the heterogeneous estimates of land loss, enabling the modelling of sediment production in wider basin areas and the analysis of the impacts of different land management factors on the erosion processes.

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“…Accurate and reliable information of terrain surface, commonly represented using a Digital Terrain Model (DTM), is of a great importance to various environmental disciplines (Nelson et al, 2009). In forestry, DTMs are commonly used in forest inventory (Rahlf et al, 2015;Puliti et al, 2017, Balenović et al, 2017, in hydrological modelling (Furze et al, 2017), in disaster risk analysis (Ristić et al, 2017), and in various forestry operations including forest road netowork planning and design Çalişkan and Karahalil, 2017a), timber utilization and harvesting (Çalişkan and Karahalil, 2017b;Đuka et al, 2017;Talbot et al, 2017), as well as environmental aspect of harvesting technologies (Cambi et al, 2018;Salmivaara et al, 2018).…”

Section: Introduction Uvodmentioning

confidence: 99%

A novel automated method for the improvement of photogrammetric DTM accuracy in forests

Gašparović

Milas

Seletković

et al. 2018

Šumar. list (Online)

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Digitalni model reljefa (DTM, engl. Digital Terrain Model) ima široku i važnu primjenu u mnogim djelatnostima, uključujući i šumarstvo. Međutim, precizno modeliranje terena, odnosno izrada DTM-a u šumama, bilo korištenjem terenskih metoda ili metoda daljinskih istraživanja, izazovan je i vrlo zahtjevan zadatak. U većini razvijenih zemalja svijeta, zračno lasersko skeniranje (ALS, engl. Airborne Laser Scanning) bazirano na LiDAR (engl. Light Detection and Ranging) tehnologiji trenutno predstavlja glavnu metodu za izradu DTM-a. Uslijed mogućnosti laserskog zračenja da penetrira kroz krošnje drveća, LiDAR tehnologija se pokazala kao efektivna i brza metoda za izradu DTM-a u šumskim područjima s vrlo velikom točnošću. Međutim, u mnogim zemljama svijeta, uključujući i Hrvatsku, zračno lasersko skeniranje nije u potpunosti provedeno, tj. samo su manji dijelovi zemlje pokriveni s podacima zračnog laserskog skeniranja. U tim slučajevima, DTM temeljen na stereo-fotogrametrijskoj izmjeri aerosnimaka potpomognut s terenskim podacima najčešće predstavlja glavni izvor informacija za izradu DTM-a. Poznato je da tako izrađen DTM u šumskim predjelima ima manju točnost od DTM-a dobivenog na temelju zračnog laserskog skeniranja zbog pokrivenosti terena vegetacijom. Također, u okviru nedavno provedenog istraživanja (Balenović i dr., 2018) utvrđeno je da takvi službeni fotogrametrijski digitalni podaci terena u šumskim predjelima sadrže određen broj tzv. grubih grešaka, koje mogu značajno utjecati na točnost izrađenog DTM-a. Nakon vizualnog detektiranja i manualnog uklanjanja tih pogrešaka, Balenović i dr. (2018) utvrdili su značajno poboljšanje točnosti fotogrametrijskog DTM-a. Stoga je glavni cilj ovoga rada razviti automatsku metodu za detekciju i eliminaciju vertikalnih pogrešaka u fotogrametrijskim digitalnim podacima terena te na taj način poboljšati točnost fotogrametrijskog DTM-a u nizinskim šumskim područjima Hrvatske. Ideja je razviti brzu, jednostavnu i učinkovitu metodu koja će biti primjenjiva i za druga šumska područja sličnih karakteristika, a za koja ne postoje DTM dobiven zračnim laserskim skeniranjem. Istraživanje je provedeno u nizinskim šumama na području gospodarske jedinice Jastrebarski lugovi, u neposrednoj blizini Jastrebarskog (Slika 1). Istraživanjem je obuhvaćena površina od 2.005,74 ha, na kojoj su u najvećoj mjeri zastupljene jednodobne sastojine hrasta lužnjaka (Quercus robur L.), a u manjoj mjeri jednodobne sastojine poljskog jasena (Fraxinus angustifolia L.) te jednodobne sastojine običnoga graba (Carpinus betulus L.). Nadmorska visina područja istraživanja kreće se u rasponu od 105 do 121 m. Fotogrametrijski DTM (DTMPHM) je izrađen iz digitalnih vektorskih podataka terena (prijelomnice, linije oblika, markantne točke terena i pravokutne mreže visinskih točaka) nabavljenih iz Državne geodetske uprave (Slika 2). Ti podaci predstavljaju nacionalni standard i jedini su dostupni podaci za izradu DTM-a u Hrvatskoj. Detaljan opis vektorskih podataka dan je u radu Balenović i dr. (2018). Prvo je iz digitalnih terenskih podataka izrađena nepravilna mreža trokuta, koja je potom linearnom interpolacijom pretvorena u rasterski DTMPHM prostorne rezolucije (veličine piksela) 0,5 m. Automatska metoda za detekciju i eliminaciju vertikalnih pogrešaka fotogrametrijskog DTM-a u nizinskim šumskim područjima razvijena je u slobodnom programskom paketu Grass GIS (Slika 3). Kombinacijom vrijednosti nagiba i tangencijalne zakrivljenosti terena rasterskog DTMPHM (Slika 4), automatskom metodom su detektirane 91 grube greške (engl. outliers). Drugim riječima, utvrđeno je da 91 točkasti vektorski objekt pogrešno prikazuje stvarnu visinu terena. Navedeni broj čini 3,2 % od ukupnog broja točkastih objekata korištenih za izradu DTMPHM-a. Nakon eliminacije detektiranih pogrešaka izrađen je novi, korigirani fotogrametrijski DTM (DTMPHMc). Za ocjenu vertikalne točnosti izvornog (DTMPHM) i korigiranog DTM-a (DTMPHMc) korišten je visoko precizni DTM dobiven zračnim laserskim skeniranjem (DTMLiD). U tu svrhu su izrađeni rasteri razlika između DTMPHM i DTMLiD, te između DTMPHMc i DTMLiD. Kako je preliminarnom analizom utvrđeno da vertikalne razlike između DTMPHM i DTMLiD nisu normalno distribuirane (Slika 5), za ocjenu točnosti su uz normalne mjere točnosti korištene i tzv. robusne mjere točnosti (Tablica 2). Dobiveni rezultati ukazuju na poboljšanje vertikalne točnosti fotogrametrijskog DTM-a primjenom razvijene automatske metode. To je posebice uočljivo na podpodručjima 2 i 3 (Slika 6 i 7) u kojima se nakon uklanjanja detektiranih grešaka, korijen srednje kvadratne pogreške (RMSE, engl. root mean square error) smanjio za 8 % odnosno 50 % (Tablica 2). Na temelju dobivenih rezultata i usporedbe s DTMLiD, može se zaključiti da predložena metoda uspješno detektira i eliminira vertikalne pogreške fotogrametrijskog DTM-a u nizinskim šumskim područjima, te slijedom toga poboljšava njegovu vertikalnu točnost.

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Disaster Risk Reduction Based on a GIS Case Study of the Čađavica River Watershed

Cited by 6 publications

References 17 publications

Current Trends and Future Perspectives of Integrated Watershed Management

Current Trends and Future Perspectives of Integrated Watershed Management

Impact of Repurposing Forest Land on Erosion and Sediment Production. Case Study: Krupanj Municipality—Serbia

A novel automated method for the improvement of photogrammetric DTM accuracy in forests

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