Pub Date : 2023-01-05DOI: 10.3929/ETHZ-B-000074859
F. Techel, Christine Pielmeier, Gian Darms, M. Teich, S. Margreth
{"title":"Schnee und Lawinen in den Schweizer Alpen. Hydrologisches Jahr 2021/22","authors":"F. Techel, Christine Pielmeier, Gian Darms, M. Teich, S. Margreth","doi":"10.3929/ETHZ-B-000074859","DOIUrl":"https://doi.org/10.3929/ETHZ-B-000074859","url":null,"abstract":"","PeriodicalId":445287,"journal":{"name":"WSL Berichte","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129290961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Von Dezember 2020 bis Mai 2022 beschäftigte sich ein interdisziplinär zusammengesetztes Team der Eidgenössischen Forschungsanstalt für Wald, Schnee und Landschaft WSL im Rahmen des Projektes «Klima-, Bestandes-, Nutzungs- und Landschaftsgeschichte in der Region Avers, Kt. GR» mit den Wäldern des Avers. Das durch die WSL und weitere Geldgeber geförderte Projekt umfasste Module zur Waldstrukturentwicklung, Jahrringforschung und Nutzungsgeschichte. Angeregt wurde das Projekt durch die Tatsache, dass in den Wäldern des Avers eine grosse Anzahl offensichtlich sehr alter Arven und Lärchen angetroffen werden kann. Der vorliegende WSL Bericht fasst die Ergebnisse der historischen Untersuchungen zur Waldentwicklung und der Nutzungsgeschichte zusammen. [...]
{"title":"Zur Geschichte der Wälder im Avers","authors":"M. Bürgi, Susan Lock","doi":"10.55419/wsl:32347","DOIUrl":"https://doi.org/10.55419/wsl:32347","url":null,"abstract":"Von Dezember 2020 bis Mai 2022 beschäftigte sich ein interdisziplinär zusammengesetztes Team der Eidgenössischen Forschungsanstalt für Wald, Schnee und Landschaft WSL im Rahmen des Projektes «Klima-, Bestandes-, Nutzungs- und Landschaftsgeschichte in der Region Avers, Kt. GR» mit den Wäldern des Avers. Das durch die WSL und weitere Geldgeber geförderte Projekt umfasste Module zur Waldstrukturentwicklung, Jahrringforschung und Nutzungsgeschichte. Angeregt wurde das Projekt durch die Tatsache, dass in den Wäldern des Avers eine grosse Anzahl offensichtlich sehr alter Arven und Lärchen angetroffen werden kann. Der vorliegende WSL Bericht fasst die Ergebnisse der historischen Untersuchungen zur Waldentwicklung und der Nutzungsgeschichte zusammen. [...]","PeriodicalId":445287,"journal":{"name":"WSL Berichte","volume":"86 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127990575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The specification of realistic service loads for flexible rockfall barriers is an on-going concern in rockfall engineering. The purpose of this document is to present results of full-scale experiments of rockfall barriers in natural terrain. Full scale experiments are performed in-situ at the Chant Sura test site located at the Flüela Pass, Canton Grisons, Switzlerland between 2018 and 2021. The tests were performed with instrumented blocks in order to quantify how blocks decelerate at barrier impact in real conditions. A total of 30 blocks were released - 25 of these blocks impacted the barrier. The barrier absorbed a total of 12'100 kJ of impact energy. The boulder masses varied between 840 kg and 3200 kg and both equant and platy shaped blocks were used in the experiments. Forces in the barrier components are measured and quantified in terms of incoming translational and rotational block energies. [...]
{"title":"Rockfall barrier service loads for rock impacts with spin. Theory and experiments","authors":"A. Caviezel, J. Munch, P. Bartelt, Andreas Lanter","doi":"10.55419/wsl:32009","DOIUrl":"https://doi.org/10.55419/wsl:32009","url":null,"abstract":"The specification of realistic service loads for flexible rockfall barriers is an on-going concern in rockfall engineering. The purpose of this document is to present results of full-scale experiments of rockfall barriers in natural terrain. Full scale experiments are performed in-situ at the Chant Sura test site located at the Flüela Pass, Canton Grisons, Switzlerland between 2018 and 2021. The tests were performed with instrumented blocks in order to quantify how blocks decelerate at barrier impact in real conditions. A total of 30 blocks were released - 25 of these blocks impacted the barrier. The barrier absorbed a total of 12'100 kJ of impact energy. The boulder masses varied between 840 kg and 3200 kg and both equant and platy shaped blocks were used in the experiments. Forces in the barrier components are measured and quantified in terms of incoming translational and rotational block energies. [...]","PeriodicalId":445287,"journal":{"name":"WSL Berichte","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125485439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tessa Hegetschweiler, Boris Salak, A. Wunderlich, N. Bauer, M. Hunziker
The relationship of the Swiss population to the forest has been investigated in surveys since 1978, and in 1997 for the first time as part of the so-called “Sociocultural forest monitoring” or “Waldmonitoring soziokulturell” WaMos. This report describes the results of the national Wa- Mos3 survey 2020. The online panel of the market research institute LINK was used for the sur- vey. In addition to the representative survey of the adult population, a sample of 156 adolescents was also interviewed. The self-assessed level of information on forest topics has declined since WaMos2 (2010), with older people feeling better informed than younger people. The level of knowledge regarding the increase in forest area in Switzerland and the management of mountain forests for protection against natural hazards is also lower among younger people than among older ones. Today, the population attributes greater importance to most forest functions for society than in WaMos2. In particular, the ecological function, the production function and the recreational function have gained importance. More people than in WaMos2 (2010) assume that forest health has deteriorated. Changes due to climate change, such as drought damage, are perceived by the population. The majority of the population is in favour of active forest management for climate adaptation. With regard to the ecological function of the forest, most people know that biodiversity has decreased. Accor- dingly, the acceptance of forest reserves is high, as is that of large carnivores. Climate change, the expansion of settlements, introduced animal and plant species and pests are seen as the greatest threats to the forest. Great importance is attached to the protective function of the forest. Nevertheless, knowledge about the interrelation between the management and the pro- tective function of mountain forests is declining. In principle, the population is satisfied with the management of the most frequently visited forest. The felling of trees and closing of roads for logging are well accepted by the population. Leaving branches lying on the ground after logging is controversial, and is either well accepted or not accepted at all. Sustainability criteria have gained in importance when purchasing timber products. In terms of forest preferences, the population likes mixed forests best. The presence of a shrub layer is better liked than in WaMos2 (2010) and the liking of deadwood is also increasing at a low level. However, recreational infrastructure is valued less and less. For the first time, forest photos were also presented to the respondents for assessment. It turns out that already existing forest preferences, motives for visiting the forest, the importance of the forest in childhood and the language region have an influence on visual attractiveness of forest. Forest characteristics such as visibility range, shrub layer cover and cover of berry bushes, stage of stand development, stand structure and the pres
{"title":"Das Verhältnis der Schweizer Bevölkerung zum Wald. Waldmonitoring soziokulturell WaMos3. Ergebnisse der nationalen Umfrage","authors":"Tessa Hegetschweiler, Boris Salak, A. Wunderlich, N. Bauer, M. Hunziker","doi":"10.55419/wsl:29973","DOIUrl":"https://doi.org/10.55419/wsl:29973","url":null,"abstract":"The relationship of the Swiss population to the forest has been investigated in surveys since 1978, and in 1997 for the first time as part of the so-called “Sociocultural forest monitoring” or “Waldmonitoring soziokulturell” WaMos. This report describes the results of the national Wa- Mos3 survey 2020. The online panel of the market research institute LINK was used for the sur- vey. In addition to the representative survey of the adult population, a sample of 156 adolescents was also interviewed. The self-assessed level of information on forest topics has declined since WaMos2 (2010), with older people feeling better informed than younger people. The level of knowledge regarding the increase in forest area in Switzerland and the management of mountain forests for protection against natural hazards is also lower among younger people than among older ones. Today, the population attributes greater importance to most forest functions for society than in WaMos2. In particular, the ecological function, the production function and the recreational function have gained importance. More people than in WaMos2 (2010) assume that forest health has deteriorated. Changes due to climate change, such as drought damage, are perceived by the population. The majority of the population is in favour of active forest management for climate adaptation. With regard to the ecological function of the forest, most people know that biodiversity has decreased. Accor- dingly, the acceptance of forest reserves is high, as is that of large carnivores. Climate change, the expansion of settlements, introduced animal and plant species and pests are seen as the greatest threats to the forest. Great importance is attached to the protective function of the forest. Nevertheless, knowledge about the interrelation between the management and the pro- tective function of mountain forests is declining. In principle, the population is satisfied with the management of the most frequently visited forest. The felling of trees and closing of roads for logging are well accepted by the population. Leaving branches lying on the ground after logging is controversial, and is either well accepted or not accepted at all. Sustainability criteria have gained in importance when purchasing timber products. In terms of forest preferences, the population likes mixed forests best. The presence of a shrub layer is better liked than in WaMos2 (2010) and the liking of deadwood is also increasing at a low level. However, recreational infrastructure is valued less and less. For the first time, forest photos were also presented to the respondents for assessment. It turns out that already existing forest preferences, motives for visiting the forest, the importance of the forest in childhood and the language region have an influence on visual attractiveness of forest. Forest characteristics such as visibility range, shrub layer cover and cover of berry bushes, stage of stand development, stand structure and the pres","PeriodicalId":445287,"journal":{"name":"WSL Berichte","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126073864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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