Post-fire management effects on hillslope-stream sediment connectivity in a Mediterranean forest ecosystem

González-Romero, J.; López‐Vicente, Manuel; Gómez-Sánchez, E.; Peña, E. de la; Galletero, Pablo; Plaza‐Álvarez, Pedro Antonio; Fajardo-Cantos, Álvaro; Moya, Daniel; Heras, Jorge de las; Lucas‐Borja, Manuel Esteban

doi:10.1016/j.jenvman.2022.115212

Cited by 3 publications

(2 citation statements)

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“…Optimal study sites are areas of limited or no vegetation. These sites relate to post-fire settings, settings controlled by overgrazing [111][112][113][114][115][116][117][118], or areas of high sedimentation, where eroded, transported sediments constantly cover the recently formed vegetation (as at the Platana test site [47]). To our knowledge, no detailed soil erosion investigation has yet been conducted regarding the combination of UAV-and t-LiDAR-derived point cloud algorithms in fire-affected areas.…”

Section: Discussionmentioning

confidence: 99%

Monitoring and Quantifying Soil Erosion and Sedimentation Rates in Centimeter Accuracy Using UAV-Photogrammetry, GNSS, and t-LiDAR in a Post-Fire Setting

Alexiou,

Papanikolaou,

Schneiderwind

et al. 2024

Remote Sensing

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Remote sensing techniques, namely Unmanned Aerial Vehicle (UAV) photogrammetry and t-LiDAR (terrestrial Light Detection and Ranging), two well-established techniques, were applied for seven years in a mountainous Mediterranean catchment in Greece (Ilioupoli test site, Athens), following a wildfire event in 2015. The goal was to monitor and quantify soil erosion and sedimentation rates with cm accuracy. As the frequency of wildfires in the Mediterranean has increased, this study aims to present a methodological approach for monitoring and quantifying soil erosion and sedimentation rates in post-fire conditions, through high spatial resolution field measurements acquired using a UAV survey and a t-LiDAR (or TLS—Terrestrial Laser Scanning), in combination with georadar profiles (Ground Penetration Radar—GPR) and GNSS. This test site revealed that 40 m3 of sediment was deposited following the first intense autumn rainfall events, a value that was decreased by 50% over the next six months (20 m3). The UAV–SfM technique revealed only 2 m3 of sediment deposition during the 2018–2019 analysis, highlighting the decrease in soil erosion rates three years after the wildfire event. In the following years (2017–2021), erosion and sedimentation decreased further, confirming the theoretical pattern, whereas sedimentation over the first year after the fire was very high and then sharply lessened as vegetation regenerated. The methodology proposed in this research can serve as a valuable guide for achieving high-precision sediment yield deposition measurements based on a detailed analysis of 3D modeling and a point cloud comparison, specifically leveraging the dense data collection facilitated by UAV–SfM and TLS technology. The resulting point clouds effectively replicate the fine details of the topsoil microtopography within the upland dam basin, as highlighted by the profile analysis. Overall, this research clearly demonstrates that after monitoring the upland area in post-fire conditions, the UAV–SfM method and LiDAR cm-scale data offer a realistic assessment of the retention dam’s life expectancy and management planning. These observations are especially crucial for assessing the impacts in the wildfire-affected areas, the implementation of mitigation strategies, and the construction and maintenance of retention dams.

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Section: Discussionmentioning

confidence: 99%

Monitoring and Quantifying Soil Erosion and Sedimentation Rates in Centimeter Accuracy Using UAV-Photogrammetry, GNSS, and t-LiDAR in a Post-Fire Setting

Alexiou,

Papanikolaou,

Schneiderwind

et al. 2024

Remote Sensing

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“…The outcomes attributed to reforestation include: recovered carbon storage (Looney et al, 2023), stabilized slopes to reduce erosion (González-Romero et al, 2022), sustained water supply, improved surface water quality (Keller and Fox, 2019), reduced flood risk (Papaioannou et al, 2023), improved snowpack storage and retention (Dickerson-Lange et al, 2021), maintained habitat for species of concern (Kemppinen et al, 2020), and others. Many entities stand to benefit from these outcomes, including electric and water utilities that operate on or downstream of projects, private companies with climate resilience, carbon removal, or water replenishment goals, and entities interested in providing recreation and tourism opportunities (Quesnel Seipp et al, 2023).…”

Section: What Approaches To Reforestation Can Foster Resilience To Cl...mentioning

confidence: 99%

‘Mind the Gap’—reforestation needs vs. reforestation capacity in the western United States

Dobrowski,

Aghai,

Chichilnisky du Lac

et al. 2024

Front. For. Glob. Change

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Tree establishment following severe or stand-replacing disturbance is critical for achieving U.S. climate change mitigation goals and for maintaining the co-benefits of intact forest ecosystems. In many contexts, natural post-fire tree regeneration is sufficient to maintain forest cover and associated ecosystem services, but increasingly the pattern and scale of disturbance exceeds ecological thresholds and active reforestation may be warranted. Our capacity to plant trees, however, is not keeping pace with reforestation needs. This shortfall is uniquely apparent in the western U.S., where wildfire size and severity have increased in recent decades and long-term divestment in the reforestation supply chain has limited our ability to respond to existing needs. Here we present an analysis of key facets of both the supply and demand side of reforestation in the western U.S. and address six questions: (1) What is the current backlog of potential reforestation needs driven by high-severity wildfire?; (2) How will increasing wildfire activity through the end of the century affect potential reforestation needs?; (3) What is our capacity to meet current and future reforestation needs?; (4) How can we scale the reforestation supply chain to meet current and future demands?; (5) What approaches to reforestation can promote forest resilience to climate change and wildfire?; and (6) Where are opportunities emerging from recent policy initiatives, innovative public-private partnerships, and natural capital markets for scaling reforestation? Between 1984 and 2000, annual tree planting capacity met post-fire needs but cumulatively over the last two decades (2000 to 2021) it has fallen short of fire-driven needs by an estimated 1.5 million ha (ca. 3.8 million ac). We anticipate this gap will increase 2 to 3 fold by 2050. Scaling up reforestation efforts to close this gap will require increased investment across all facets of the reforestation supply chain, public-private partnerships, and novel approaches to reforestation that increase the resilience of western forests to drought and wildfire. We highlight emerging opportunities from recent policy initiatives and conservation finance for expanding reforestation efforts.

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Dataset Analysis of Flexible Composites Pannels for Agricultural Air Cargo Transport Scenario

Mihai,

Vladu,

Ene

2023

10th SWS International Scientific Conferences on SOCIAL SCIENCES - ISCSS Proceedings 2023

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The soil represents the "fragile skin" that anchors all life on Earth and from whichbiodiversity springs. The dynamic and complex ecosystem produced by the soil, wherethere are countless species of living things supports the most precious resources for lifeon Earth. It has been scientifically proven that the most used technique for protectingthe soil against environmental factors (drought, erosion) is that of mulching, whichenable the affected areas to be covered with a layer of mulch that will accelerate thenative recovery of vegetation and implicitly agricultural production, by maintaininghumidity and protection from solar radiation. The research of INCDTP specialists aimsto create a functional model of a collapsible aerial module for transporting waste formulching in areas with difficult access or on very large areas (forests, agriculturalplantations on areas of at least 500 ha). The paper presents the behavioral analysis of thefunctional model made of composite material with a textile matrix and 5 panelsassembled by sewing, from the same material, the difference between them consisting inthe panels joining methods. The experiments were carried out in the accreditedlaboratories, the data obtained allowing the prediction of the technological parametersof joining the panels and the behavior of the entire system in real conditions of use.

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Post-fire management effects on hillslope-stream sediment connectivity in a Mediterranean forest ecosystem

Cited by 3 publications

References 46 publications

Monitoring and Quantifying Soil Erosion and Sedimentation Rates in Centimeter Accuracy Using UAV-Photogrammetry, GNSS, and t-LiDAR in a Post-Fire Setting

Monitoring and Quantifying Soil Erosion and Sedimentation Rates in Centimeter Accuracy Using UAV-Photogrammetry, GNSS, and t-LiDAR in a Post-Fire Setting

‘Mind the Gap’—reforestation needs vs. reforestation capacity in the western United States

Dataset Analysis of Flexible Composites Pannels for Agricultural Air Cargo Transport Scenario

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