Assessment and Mechanism Analysis of Forest Protection against Rockfall in a Large Rock Avalanche Area DOI Open Access
Kanglei Song, Haiqing Yang, Dan Liang

et al.

Forests, Journal Year: 2023, Volume and Issue: 14(10), P. 1982 - 1982

Published: Sept. 30, 2023

Trees in forests can obstruct falling rocks and serve as a natural barrier to reduce the velocity of rocks. Recently, there has been growing interest utilizing safeguard against potential rockfall. Nevertheless, is dearth research regarding impact rock size forest structure on preservation This study takes Jiweishan avalanche that occurred China June 2009 an example discuss protection mechanism rockfall disasters. Three sizes rockfalls from were simulated analyzed with without using Rockyfor3D software. The findings indicate mitigate energy Especially debris flow area avalanches, protective effect trees small-sized most obvious, reducing runout distance damage range flow. Moreover, structures risk was explored. It found broad-leaved had best rocks, followed by coniferous mixed forests, worst effect. Furthermore, increasing planting density tree diameter at breast height (DBH) result better Thus, rational planning species areas effectively threat risk. ideas this provide basis for evaluating mitigation hazards reference constructing hazard areas.

Language: Английский

Alpine greening deciphered by forest stand and structure dynamics in advancing treelines of the southwestern European Alps DOI Creative Commons
Arthur Bayle,

Baptiste Nicoud,

Jérôme Mansons

et al.

Remote Sensing in Ecology and Conservation, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Abstract Multidecadal time series of satellite observations, such as those from Landsat, offer the possibility to study trends in vegetation greenness at unprecedented spatial and temporal scales. Alpine ecosystems have exhibited large increases seen space; nevertheless, ecological processes underlying alpine greening rarely been investigated. Here, we used a unique dataset forest stand structure characteristics derived manually orthorectified high‐resolution diachronic images (1983 2018), dendrochronology LiDAR analysis decipher southwestern French Alps, formerly identified hotspot scale European Alps by previous studies. We found that most this area can be attributed dynamics, including ingrowth treeline upward shift. Furthermore, showed magnitude was highest pixels/areas where trees were first established beginning Landsat mid‐80s corresponding specific successional stage. In these pixels, observe wave establishment grown between 1984 2023, while over same period, younger gaps, leading both vertical horizontal cover. This provides an in‐depth description causal relationship dynamics greening, providing example how translate into radiometric signals, also paving way for large‐scale using remote sensing.

Language: Английский

Citations

1
Geo-evolutionary feedbacks: integrating rapid evolution and landscape change DOI
Xiaoli Dong, Maya F. Stokes, Andrew P. Hendry

et al.

Trends in Ecology & Evolution, Journal Year: 2024, Volume and Issue: 39(9), P. 863 - 876

Published: June 12, 2024

Language: Английский

Citations

5
Alpine plant communities and current topographic microrefugia vary with regional climates DOI
George P. Malanson, Daniel B. Fagre, David R. Butler

et al.

Geomorphology, Journal Year: 2024, Volume and Issue: 458, P. 109241 - 109241

Published: May 10, 2024

Language: Английский

Citations

3
Alpine greening deciphered by forest stand and structure dynamics in advancing treelines DOI
Arthur Bayle,

Baptiste Nicoud,

Jérôme Mansons

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: July 2, 2024

Abstract Multidecadal time series of satellite observations, such as those from Landsat, offer the possibility to study trends in vegetation greenness at unprecedented spatial and temporal scales. Alpine ecosystems have exhibited large increases seen space, nevertheless, ecological processes underlying alpine greening rarely been investigated. Here, we used a unique dataset forest stand structure characteristics derived manually orthorectified high-resolution diachronic images (1983 2018), dendrochronology LiDAR analysis decipher southwestern French Alps, formerly identified hotspot scale European Alps by previous studies. We found that most this area can be attributed dynamics, including ingrowth treeline upward shift. Furthermore, showed magnitude was highest pixels/areas where trees first established beginning Landsat mid-80s corresponding specific successional stage. In these pixels, observe wave establishment grown between 1984 2023, while simultaneously, younger gaps, leading both vertical horizontal cover. This provides an in-depth description causal relationship dynamics greening, providing example how translate into radiometric signals, also paving way for large-scale using remote sensing.

Language: Английский

Citations

2
Sediment export from an Alpine proglacial area under a changing climate: Budgets, rates, and geomorphological processes DOI Creative Commons
Sara Savi, Felix Pitscheider, Michael Engel

et al.

Geomorphology, Journal Year: 2024, Volume and Issue: 462, P. 109343 - 109343

Published: July 14, 2024

Proglacial areas in the European Alps and other high-elevation mountains are currently undergoing rapid change due to global warming. Because of rising temperatures, glaciers glacier forefields subjected increased melting associated sediment export. This observation is increasingly important with respect geomorphological ecological dynamics, emerging natural hazards mitigation efforts, hydropower plant management. It therefore crucial analyze factors feedback mechanisms governing production, transport, deposition these rapidly changing areas. In this study, we investigated dynamics a proglacial area located Eastern Italian over period 1969–2021 aims of: i) identifying production; ii) quantifying volumes rates bedload transport; iii) determining relative contribution glacial export fluvial erosion total budget. We found that apart from glaciers, moraines channels have been most sources, albeit substantial differences terms connectivity thus supply rates; varied by one order magnitude (between tens hundreds mm per year), were generally higher along channel network; for relatively shorter time interval between 2005 2021, input budget ranged 34 % 37 %, whereas 45 59 was derived lateral erosion. Only small volume generated net bed incision. These results imply released Sulden progressively transferred downstream sector network, range 931 1017 tons yr−1 km−2. values typical glaciated basins highlight high dynamicity region Alps. general, our confirm complexity – spatial temporal variability Alpine systems need systematically study on wide scale, since information provided single locations or individual sectors cascade, may not be adequate understanding acting entire regions.

Language: Английский

Citations

2
Assessment and Mechanism Analysis of Forest Protection against Rockfall in a Large Rock Avalanche Area DOI Open Access
Kanglei Song, Haiqing Yang, Dan Liang

et al.

Forests, Journal Year: 2023, Volume and Issue: 14(10), P. 1982 - 1982

Published: Sept. 30, 2023

Trees in forests can obstruct falling rocks and serve as a natural barrier to reduce the velocity of rocks. Recently, there has been growing interest utilizing safeguard against potential rockfall. Nevertheless, is dearth research regarding impact rock size forest structure on preservation This study takes Jiweishan avalanche that occurred China June 2009 an example discuss protection mechanism rockfall disasters. Three sizes rockfalls from were simulated analyzed with without using Rockyfor3D software. The findings indicate mitigate energy Especially debris flow area avalanches, protective effect trees small-sized most obvious, reducing runout distance damage range flow. Moreover, structures risk was explored. It found broad-leaved had best rocks, followed by coniferous mixed forests, worst effect. Furthermore, increasing planting density tree diameter at breast height (DBH) result better Thus, rational planning species areas effectively threat risk. ideas this provide basis for evaluating mitigation hazards reference constructing hazard areas.

Language: Английский

Citations

0