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1141 | 812 | Evaluation of the impact of experimental burnings on soil erosion in forest and scrubland areas (Portugal) | Rocha, José Manuel (a,b); Vieira, António (a); Bento-Gonçalves, António (a)

Forest fires are responsible for the loss of soil vegetation cover and consequent soil erosion. In Portugal this is a period of greatest vulnerability to erosion because of the maximum fire potential in summer (July – September) and the likelihood of intense post-forest fires rainfall the following autumn–winter (November-January)._x000D_
In order to reduce the occurrence of forest fires, the applied methodology aimed at quantifying the effects on the soil of two experimental burnings. While in the area of Plot P (Eucalyptus globulus) the fire was conducted from the flank, in the area of Plot M (scrub) the fire followed the direction of the wind and the slope (upwards). With the application of this type of fire conduction techniques, it was intended to achieve different types of intensity and time of exposure of the soil to fire._x000D_
With the implementation of experimental burnings in forest of the Eucalyptus globulus and in scrub areas, an attempt was also made to evaluate the losses and soil modifications verified after the fire. In the study area, two erosion plots (modified Gerlach method) were installed to assess the erosion verified in the soil. _x000D_
The erosion increased especially in the first 6 months after the used experimental burnings, related to the occurrence of significant precipitation episodes. The transport of sediments in plot M was higher due to the lack of vegetation cover. Sediment production increased in the first 4 months by decreasing organic matter to aggregate soil elements. In plot P the existence of trees prevented the erosive action of precipitation._x000D_
In conclusion, it is clear that fire can have a significant impact on soils with important consequences for water retention capacity, infiltration, and erosion processes. In order to mitigate these impacts, it is necessary to carry out appropriate management practices for each type of area to reduce the risk of fire and increase forest resilience._x000D_

Rocha, José Manuel (a,b); Vieira, António (a); Bento-Gonçalves, António (a)
(a) CECS, Dep. of Geography, University of Minho, Portugal; (b) GRAM, University of Barcelona, Spain
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1141 | 829 | Spatio-temporal Distribution of Hotspots over the Cerrado Mineiro: a preliminary analysis connecting agricultural land use and fire recurrence | Silvio Carlos Rodrigues(1), Gabriel Henrique de Almeida Pereira(2), João Vitor Meza Bravo(1), Jorge Luis Silva Brito(1), Haendell Luiz Silva Costa(3) ; Xávier Ubeda(4); Antonio Bento Gonçalves(5), Antonio A. B. Vieira (5)

The fire can negatively affects the Cerrado Mineiro landscape (Brazillian Savanna), especially in those regions with intense agricultural practices: a common scenario in Minas Gerais, Brazil. Preventing or mitigating the impacts of these fire-related phenomena is vital for conserving the Cerrado biome. Therefore, here we mapped and analyzed the recurrence of hotspots within a study region from 2010 to 2022. We have associated these hotspots with land use, seeking to find patterns of hotspot recurrence connected to different agricultural practices and recognizing regions with frequent surface heat events. To this end, we mapped land use with data from the MAPBIOMAS project. To map the areas of hotspot recurrence, we used data from FIRMS/NASA. We observed a clear cyclical pattern of occurrence of hotspots, with particular concentration during August to October. This was expected once it follows the regional weather patterns, with dry months during this period. Furthermore, when we analyze the historical series over the last four years, there is a slight tendency for an increase in hotspots. This result indicates that prevention policies have not been as effective as they should be. Regarding the spatial distribution of hotspots, we noticed that their recurrence is regularly distributed all over the studied territory, with approximately 60% of the occurrences related to areas with active agriculture, including pasture. We also observed that the south portion – largely occupied by sugarcane plantations and pasture – concentrates the highest frequency of occurrence of hot spots: an expected pattern, given the type of management employed in these types of land use. Here we emphasize that, in a later stage, we intend to analyze the consequences of fire recurrence and intensity on vegetation regeneration; until now, the results reinforce the need to persevere in this study to understand the relationship between fire patterns and agriculture practiced in the Cerrado Mineiro.

Silvio Carlos Rodrigues(1), Gabriel Henrique de Almeida Pereira(2), João Vitor Meza Bravo(1), Jorge Luis Silva Brito(1), Haendell Luiz Silva Costa(3) ; Xávier Ubeda(4); Antonio Bento Gonçalves(5), Antonio A. B. Vieira (5)
(1)Universidade Federal de Uberlândia; (2)SIMEPAR; (3) Corpo Bombeiros MG; (4)Universidad de Barcelona; (5) Universidade do Minho
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1140 | 920 | Protected natural area and volunteering: participatory methods for the conservation and enhancement of natural capital. | Lara Fiorentini (1), Francesco Faccini (2)

The topic of nature conservation must overcome the antithesis between men and parks and must educate responsible environmental protection behaviour._x000D_
Volunteering in nature parks represents an opportunity for land conservation, environmental and civic education at the same time, and a true dialogue between man and nature. Volunteering is an opportunity for active citizenship to be involved in nature conservation and an opportunity to promote and disseminate the culture of protected area and environmental sustainability._x000D_
A growing motivation for caring for the commons in general and for the environment can now be observed among citizens. This research proposes an analysis of the implementation of volunteer programmes in Italy’s National Parks, Marine Protected Areas and Regional Parks. The results show the current sensitivity of the sector to the issue of voluntary service for nature._x000D_
The main and most significant Italian volunteer programmes were observed, such as the programmes of the Abruzzo National Park and the Casentinesi Forest National Park. Local stakeholders supporting the project in logistics and mentoring of volunteer groups were interviewed._x000D_
Finally, the research proposes methodological support for park managers to introduce structured forms of voluntary activities for nature into the management system, without additional effort on the part of the organisations. _x000D_
Nature parks can get from this study a project format for solutions that are appropriate to their own context or supplement their current programmes._x000D_

Lara Fiorentini (1), Francesco Faccini (2)
(1) Regione Liguria, (2) DISTAV, Università di Genova

 
ID Abstract: 920

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