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Two hundred years of land-use change in the South Swedish Uplands: comparison of historical map-based estimates with a pollen-based reconstruction using the landscape reconstruction algorithm

Mazier, Florence LU ; Broström, Anna LU ; Bragée, Petra LU ; Fredh, Daniel LU ; Stenberg, Li LU ; Thiere, Geraldine; Sugita, Shinya and Hammarlund, Dan LU (2015) In Vegetation History and Archaeobotany 24(5). p.555-570
Abstract
Long-term records of environmental history at decadal to millennial time-scales enable an assessment of ecosystem variability and responses to past anthropogenic disturbances and are fundamental for the development of environmental management strategies. This study examines the local variability of land-use history in the South Swedish Uplands over the last 200 years based on pollen records from three lake-sediment successions. Temporal changes in the proportional cover of 14 plant taxa were quantified as percentages using the landscape reconstruction algorithm (LRA). The LRA-based estimates of the extent of four land-use categories (cropland, meadows/grassland, wetland, outland/woodland) were compared to corresponding estimates based on... (More)
Long-term records of environmental history at decadal to millennial time-scales enable an assessment of ecosystem variability and responses to past anthropogenic disturbances and are fundamental for the development of environmental management strategies. This study examines the local variability of land-use history in the South Swedish Uplands over the last 200 years based on pollen records from three lake-sediment successions. Temporal changes in the proportional cover of 14 plant taxa were quantified as percentages using the landscape reconstruction algorithm (LRA). The LRA-based estimates of the extent of four land-use categories (cropland, meadows/grassland, wetland, outland/woodland) were compared to corresponding estimates based on historical maps and aerial photographs from ad 1769-1823, 1837-1895, 1946 and 2005. Although the LRA approach tends to overestimate grassland cover by 10-30 % for the two earliest time periods, the reconstructed vegetation composition is generally in good agreement with estimates based on the historical records. Subsequently, the LRA approach was used to reconstruct the 200-year history of local land-use dynamics at 20-year intervals around two small lakes. The qualitative assessment of difference approach, which requires fewer assumptions and parameters than LRA for objective evaluation of between-site differences in plant abundances, provides consistent results in general. Significant differences exist in the land-use history between the sites. Local catchment characteristics, such as soil conditions and wetland cover, appear important for the development of human impact on the landscape. Quantifications of past vegetation dynamics provide information on the amplitude, frequency and duration of the land-use changes and their effects on terrestrial and aquatic ecosystems, and should be taken into account when nature conservation strategies are developed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lake sediments, Pollen analysis, Landscape reconstruction algorithm, Land-use cover, Istorical maps
in
Vegetation History and Archaeobotany
volume
24
issue
5
pages
555 - 570
publisher
Springer
external identifiers
  • wos:000358741700001
  • scopus:84938416448
ISSN
0939-6314
DOI
10.1007/s00334-015-0516-0
language
English
LU publication?
yes
id
e89d535b-1e75-460b-a0f3-182e29919d2a (old id 7975857)
date added to LUP
2015-09-24 17:27:33
date last changed
2017-11-12 03:34:00
@article{e89d535b-1e75-460b-a0f3-182e29919d2a,
  abstract     = {Long-term records of environmental history at decadal to millennial time-scales enable an assessment of ecosystem variability and responses to past anthropogenic disturbances and are fundamental for the development of environmental management strategies. This study examines the local variability of land-use history in the South Swedish Uplands over the last 200 years based on pollen records from three lake-sediment successions. Temporal changes in the proportional cover of 14 plant taxa were quantified as percentages using the landscape reconstruction algorithm (LRA). The LRA-based estimates of the extent of four land-use categories (cropland, meadows/grassland, wetland, outland/woodland) were compared to corresponding estimates based on historical maps and aerial photographs from ad 1769-1823, 1837-1895, 1946 and 2005. Although the LRA approach tends to overestimate grassland cover by 10-30 % for the two earliest time periods, the reconstructed vegetation composition is generally in good agreement with estimates based on the historical records. Subsequently, the LRA approach was used to reconstruct the 200-year history of local land-use dynamics at 20-year intervals around two small lakes. The qualitative assessment of difference approach, which requires fewer assumptions and parameters than LRA for objective evaluation of between-site differences in plant abundances, provides consistent results in general. Significant differences exist in the land-use history between the sites. Local catchment characteristics, such as soil conditions and wetland cover, appear important for the development of human impact on the landscape. Quantifications of past vegetation dynamics provide information on the amplitude, frequency and duration of the land-use changes and their effects on terrestrial and aquatic ecosystems, and should be taken into account when nature conservation strategies are developed.},
  author       = {Mazier, Florence and Broström, Anna and Bragée, Petra and Fredh, Daniel and Stenberg, Li and Thiere, Geraldine and Sugita, Shinya and Hammarlund, Dan},
  issn         = {0939-6314},
  keyword      = {Lake sediments,Pollen analysis,Landscape reconstruction algorithm,Land-use cover,Istorical maps},
  language     = {eng},
  number       = {5},
  pages        = {555--570},
  publisher    = {Springer},
  series       = {Vegetation History and Archaeobotany},
  title        = {Two hundred years of land-use change in the South Swedish Uplands: comparison of historical map-based estimates with a pollen-based reconstruction using the landscape reconstruction algorithm},
  url          = {http://dx.doi.org/10.1007/s00334-015-0516-0},
  volume       = {24},
  year         = {2015},
}