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Vegetationens betydelse för dyners morfologi, Inverkan av stormerosion samt långsiktig utveckling i Ängelholms strandskog

Lindell, Janna LU (2017) In TVVR17/5001 VVR820 20162
Division of Water Resources Engineering
Abstract
In 2014 vegetation was removed from the sand dunes in the south section of Ängelholm beach as a part of the EU-funded project Sand Life, with the objective to improve biodiversity in Swedish sand areas. The aim of this study is to investigate how the removal of beach vegetation has affected the morphology and the evolution of the dunes, from the removal in 2014 until today (2016), including the impacts of the storms Egon, Gorm and Urd. The methods used are remote sensing of orthophotographs together with comparisons of digital elevation models for 2010, 2014 and 2015. The program used for the study was ArcMap 10.4.1. Measurements were also made in field. The results show that the vegetation removal have had a considerable impact on the... (More)
In 2014 vegetation was removed from the sand dunes in the south section of Ängelholm beach as a part of the EU-funded project Sand Life, with the objective to improve biodiversity in Swedish sand areas. The aim of this study is to investigate how the removal of beach vegetation has affected the morphology and the evolution of the dunes, from the removal in 2014 until today (2016), including the impacts of the storms Egon, Gorm and Urd. The methods used are remote sensing of orthophotographs together with comparisons of digital elevation models for 2010, 2014 and 2015. The program used for the study was ArcMap 10.4.1. Measurements were also made in field. The results show that the vegetation removal have had a considerable impact on the development of the dunes. The unvegetated dunes observed two to four times larger storm erosion due to waves after Egon and Gorm than the vegetated dunes. They have become more flattened than the vegetated dunes as sand from the unvegetated dunes has blown into the forest behind. The results likely depend on that the unvegetated dunes no longer are stabilized by vegetation or have enough plants that can trap and bind the sand. The removal of beach vegetation has increased the spreading of the sand and the erosion of the dunes by waves. This probably makes the dunes more vulnerable to storm events. (Less)
Abstract (Swedish)
År 2014 utfördes vegetationsborttagning på en del av sanddynerna i den södra delen av Ängelholms strand. Arbetet utfördes som en del av Projekt Sand Life, ett EU-projekt med avsikt att öka den biologiska mångfalden i svenska sandmarksområden. Syftet med den här studien är att undersöka hur borttagningen av strandvegetationen har påverkat områdets morfologi och utveckling från ingreppet fram tills idag (2016), inkluderande stormarna Egon och Gorm (2015) samt Urd (2016). Metoden som användes i undersökningen bestod av analyser av ortofoton från 2010, 2014 och 2015, samt jämförelser av höjdmodeller från dessa år. Programmet som användes för analyserna var ArcMap 10.4.1. Mätningar gjordes även i fält. Resultaten från studien visar att... (More)
År 2014 utfördes vegetationsborttagning på en del av sanddynerna i den södra delen av Ängelholms strand. Arbetet utfördes som en del av Projekt Sand Life, ett EU-projekt med avsikt att öka den biologiska mångfalden i svenska sandmarksområden. Syftet med den här studien är att undersöka hur borttagningen av strandvegetationen har påverkat områdets morfologi och utveckling från ingreppet fram tills idag (2016), inkluderande stormarna Egon och Gorm (2015) samt Urd (2016). Metoden som användes i undersökningen bestod av analyser av ortofoton från 2010, 2014 och 2015, samt jämförelser av höjdmodeller från dessa år. Programmet som användes för analyserna var ArcMap 10.4.1. Mätningar gjordes även i fält. Resultaten från studien visar att vegetationsborttagningen haft en betydande inverkan på dynernas morfologiska utveckling. De vegetationsreducerade frontdynerna har eroderat två till fyra gånger mer av vågor under stormarna Egon och Gorm än de bevuxna dynerna. De obevuxna dynerna har slätats ut mer än de bevuxna dynerna eftersom sand har blåst in i skogen bakom. Resultaten beror troligtvis på att det inte längre finns någon växtlighet på de obevuxna dynerna som stabiliserar dem eller kan fånga in och binda sanden. Sammanfattningsvis har borttagningen av vegetationen ökat sandens spridning i området och erosionen av vågor på dynen. Detta gör troligen den obevuxna dynen känsligare för stormerosion. (Less)
Please use this url to cite or link to this publication:
author
Lindell, Janna LU
supervisor
organization
alternative title
The importance of vegetation for dune morphology, Impact of storm events and long-term evolution at the beach Ängelholms strandskog
course
VVR820 20162
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Beach vegetation, removal, dune erosion, storm, GIS
publication/series
TVVR17/5001
report number
17/5001
ISSN
1101-9824
language
Swedish
additional info
Examiner: Hans Hanson
id
8903593
date added to LUP
2017-03-30 11:14:20
date last changed
2019-04-01 13:36:21
@misc{8903593,
  abstract     = {In 2014 vegetation was removed from the sand dunes in the south section of Ängelholm beach as a part of the EU-funded project Sand Life, with the objective to improve biodiversity in Swedish sand areas. The aim of this study is to investigate how the removal of beach vegetation has affected the morphology and the evolution of the dunes, from the removal in 2014 until today (2016), including the impacts of the storms Egon, Gorm and Urd. The methods used are remote sensing of orthophotographs together with comparisons of digital elevation models for 2010, 2014 and 2015. The program used for the study was ArcMap 10.4.1. Measurements were also made in field. The results show that the vegetation removal have had a considerable impact on the development of the dunes. The unvegetated dunes observed two to four times larger storm erosion due to waves after Egon and Gorm than the vegetated dunes. They have become more flattened than the vegetated dunes as sand from the unvegetated dunes has blown into the forest behind. The results likely depend on that the unvegetated dunes no longer are stabilized by vegetation or have enough plants that can trap and bind the sand. The removal of beach vegetation has increased the spreading of the sand and the erosion of the dunes by waves. This probably makes the dunes more vulnerable to storm events.},
  author       = {Lindell, Janna},
  issn         = {1101-9824},
  keyword      = {Beach vegetation,removal,dune erosion,storm,GIS},
  language     = {swe},
  note         = {Student Paper},
  series       = {TVVR17/5001},
  title        = {Vegetationens betydelse för dyners morfologi, Inverkan av stormerosion samt långsiktig utveckling i Ängelholms strandskog},
  year         = {2017},
}