A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation
A vegetation map and a Digital Elevation Model has been generated over a 54 km2 area situated at the western coast of Svalbard, at the Isfjorden fiord. The map is based on aerial photographs and a field survey made during the summer of 1994. The classification system used is described by Elven et al...
Main Authors: | , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap
1995
|
Subjects: | |
Online Access: | http://lup.lub.lu.se/student-papers/record/2062076 |
id |
ftulundlupsp:oai:lup-student-papers.lub.lu.se:2062076 |
---|---|
record_format |
openpolar |
spelling |
ftulundlupsp:oai:lup-student-papers.lub.lu.se:2062076 2023-07-30T04:03:13+02:00 A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation Josefsson, Terése Mårtensson, Ingrid 1995 application/pdf http://lup.lub.lu.se/student-papers/record/2062076 eng eng Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap http://lup.lub.lu.se/student-papers/record/2062076 geography physical geography vegetation map digital elevation model Kapp Linné Svalbard Earth and Environmental Sciences H1 1995 ftulundlupsp 2023-07-11T20:06:47Z A vegetation map and a Digital Elevation Model has been generated over a 54 km2 area situated at the western coast of Svalbard, at the Isfjorden fiord. The map is based on aerial photographs and a field survey made during the summer of 1994. The classification system used is described by Elven et alia (1990), for a similar study in Gipsdalen in the inner part of Isfjorden. The classification of the vegetation in our investigation area resulted in a map in scale l: 14 000, with a reliability of 61,3% and with 20 vegetation classes. The map was digitized and presented in scale l: 40 000. The two most widespread clas ses are type 113* -Exposed gravelly ridges with Salix polaris, and type 142 -Early snowbed/snowflush vegetation with Salix polaris. In areas with dolomitic bedrock, Dryas octopetala is frequent (type 112). Large areas are characterized by patterened ground and other frost sorting phenomena (type 112a*, l13a*, 226). The poorly drained sites have a thick moss layer and an abundance of grasses (type 222), while the areas below the birdcliffs are dominated by mosses and perennial herbs (subgroup 16). The DEM was generated using a method developed by Eklundh and Mårtensson (1994). The method is based on point sampling in a regular grid. The data was obtained from three maps, two of them made by Åkerman (1980) and the third one from a preliminary print from Norskt Polarinstitutt. Seven different interpolations were tested using the Inverse distance and Kriging methods, with a slight modification of the parameters. The best interpolation was achieved using Inverse distance with a search-window of 6 x 6 pixels and a distance weight of 2. The resulting DEMs had a resolution of 50m in the horizontal plane and 2m in the vertical plane. The DEM was combined with the vegetation map and some analyses of the vegetation were made, considering the preferred aspect, slope angle and elevation. The results showed that most of the plants grew at angles less than 5 degrees and at aspects between 225 -315 degrees (SW -NW) ... Other/Unknown Material Dryas octopetala Isfjord* Isfjorden Salix polaris Svalbard Lund University Publications Student Papers (LUP-SP) Svalbard Elven ENVELOPE(13.942,13.942,66.979,66.979) Gipsdalen ENVELOPE(16.877,16.877,78.505,78.505) Kapp Linné ENVELOPE(13.621,13.621,78.063,78.063) |
institution |
Open Polar |
collection |
Lund University Publications Student Papers (LUP-SP) |
op_collection_id |
ftulundlupsp |
language |
English |
topic |
geography physical geography vegetation map digital elevation model Kapp Linné Svalbard Earth and Environmental Sciences |
spellingShingle |
geography physical geography vegetation map digital elevation model Kapp Linné Svalbard Earth and Environmental Sciences Josefsson, Terése Mårtensson, Ingrid A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation |
topic_facet |
geography physical geography vegetation map digital elevation model Kapp Linné Svalbard Earth and Environmental Sciences |
description |
A vegetation map and a Digital Elevation Model has been generated over a 54 km2 area situated at the western coast of Svalbard, at the Isfjorden fiord. The map is based on aerial photographs and a field survey made during the summer of 1994. The classification system used is described by Elven et alia (1990), for a similar study in Gipsdalen in the inner part of Isfjorden. The classification of the vegetation in our investigation area resulted in a map in scale l: 14 000, with a reliability of 61,3% and with 20 vegetation classes. The map was digitized and presented in scale l: 40 000. The two most widespread clas ses are type 113* -Exposed gravelly ridges with Salix polaris, and type 142 -Early snowbed/snowflush vegetation with Salix polaris. In areas with dolomitic bedrock, Dryas octopetala is frequent (type 112). Large areas are characterized by patterened ground and other frost sorting phenomena (type 112a*, l13a*, 226). The poorly drained sites have a thick moss layer and an abundance of grasses (type 222), while the areas below the birdcliffs are dominated by mosses and perennial herbs (subgroup 16). The DEM was generated using a method developed by Eklundh and Mårtensson (1994). The method is based on point sampling in a regular grid. The data was obtained from three maps, two of them made by Åkerman (1980) and the third one from a preliminary print from Norskt Polarinstitutt. Seven different interpolations were tested using the Inverse distance and Kriging methods, with a slight modification of the parameters. The best interpolation was achieved using Inverse distance with a search-window of 6 x 6 pixels and a distance weight of 2. The resulting DEMs had a resolution of 50m in the horizontal plane and 2m in the vertical plane. The DEM was combined with the vegetation map and some analyses of the vegetation were made, considering the preferred aspect, slope angle and elevation. The results showed that most of the plants grew at angles less than 5 degrees and at aspects between 225 -315 degrees (SW -NW) ... |
format |
Other/Unknown Material |
author |
Josefsson, Terése Mårtensson, Ingrid |
author_facet |
Josefsson, Terése Mårtensson, Ingrid |
author_sort |
Josefsson, Terése |
title |
A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation |
title_short |
A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation |
title_full |
A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation |
title_fullStr |
A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation |
title_full_unstemmed |
A vegetation map and a digital elevation model over the Kapp Linné area, Svalbard : with analyses of the vertical and horizontal distribution of the vegetation |
title_sort |
vegetation map and a digital elevation model over the kapp linné area, svalbard : with analyses of the vertical and horizontal distribution of the vegetation |
publisher |
Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap |
publishDate |
1995 |
url |
http://lup.lub.lu.se/student-papers/record/2062076 |
long_lat |
ENVELOPE(13.942,13.942,66.979,66.979) ENVELOPE(16.877,16.877,78.505,78.505) ENVELOPE(13.621,13.621,78.063,78.063) |
geographic |
Svalbard Elven Gipsdalen Kapp Linné |
geographic_facet |
Svalbard Elven Gipsdalen Kapp Linné |
genre |
Dryas octopetala Isfjord* Isfjorden Salix polaris Svalbard |
genre_facet |
Dryas octopetala Isfjord* Isfjorden Salix polaris Svalbard |
op_relation |
http://lup.lub.lu.se/student-papers/record/2062076 |
_version_ |
1772814167526342656 |