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Land use intensity and landscape complexity-Analysis of landscape characteristics in an agricultural region in Southern Sweden

Persson, Anna LU ; Olsson, Ola LU ; Rundlöf, Maj LU and Smith, Henrik LU (2010) In Agriculture, Ecosystems & Environment 136(1-2). p.169-176
Abstract
It is generally recognised that agricultural intensification has lead to simplification of landscape structure, but it has not been clarified if this is a ubiquitous relationship. That is, it has been an open question whether agricultural intensity and landscape simplicity should be regarded as one single or as two separate dimensions. To evaluate this we analysed landscape data in 136 different 1 km x 1 km study sites and within a buffer zone of 2 kill around each site (i.e. approximately 5 km x 5 km). The sites were distributed over a large part of the region of Scania, southernmost Sweden, an area dominated by agriculture but With large variation in both intensity and complexity. We used spatially explicit digital data on land use,... (More)
It is generally recognised that agricultural intensification has lead to simplification of landscape structure, but it has not been clarified if this is a ubiquitous relationship. That is, it has been an open question whether agricultural intensity and landscape simplicity should be regarded as one single or as two separate dimensions. To evaluate this we analysed landscape data in 136 different 1 km x 1 km study sites and within a buffer zone of 2 kill around each site (i.e. approximately 5 km x 5 km). The sites were distributed over a large part of the region of Scania, southernmost Sweden, an area dominated by agriculture but With large variation in both intensity and complexity. We used spatially explicit digital data on land use, digitised aerial photographs, field surveys of landscape elements and agricultural statistics. Two separate factor analyses, one for each scale of measurements (1 km and 5 km), suggest that there are five and three relevant factors for each scale respectively. At the 1 km scale, the first factor can be interpreted as describing the intensity of land use in the form of proportion arable land which is highly correlated to crop yield. The second and third factors are more connected to landscape structure and amount of small patches of semi-natural habitats. The fourth and fifth factors contain one major variable each: proportion pasture and leys respectively. The division of intensity and complexity related variables is less clear at a larger spatial scale. At the 5 km scale, factor I is defined almost identically as at the 1 km scale. However, factors 2 and 3 are interpreted as descriptors of dairy and livestock farming systems but also include structural variables. Our analyses suggest that land use intensity and structural complexity of landscapes are more or less separate landscape level factors, at least at smaller spatial scales. This is important to bear in mind, especially when trying to explain patterns of biodiversity change in agricultural landscapes. (C) 2009 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Land use intensity, Landscape heterogeneity, Landscape complexity, Agriculture, Farmland
in
Agriculture, Ecosystems & Environment
volume
136
issue
1-2
pages
169 - 176
publisher
Elsevier
external identifiers
  • wos:000275135100019
  • scopus:74449089358
ISSN
1873-2305
DOI
10.1016/j.agee.2009.12.018
project
BECC
language
English
LU publication?
yes
id
c1bab8d1-e7a8-457c-a79e-4357c65315e6 (old id 1589827)
date added to LUP
2010-04-19 14:22:49
date last changed
2018-07-01 03:44:24
@article{c1bab8d1-e7a8-457c-a79e-4357c65315e6,
  abstract     = {It is generally recognised that agricultural intensification has lead to simplification of landscape structure, but it has not been clarified if this is a ubiquitous relationship. That is, it has been an open question whether agricultural intensity and landscape simplicity should be regarded as one single or as two separate dimensions. To evaluate this we analysed landscape data in 136 different 1 km x 1 km study sites and within a buffer zone of 2 kill around each site (i.e. approximately 5 km x 5 km). The sites were distributed over a large part of the region of Scania, southernmost Sweden, an area dominated by agriculture but With large variation in both intensity and complexity. We used spatially explicit digital data on land use, digitised aerial photographs, field surveys of landscape elements and agricultural statistics. Two separate factor analyses, one for each scale of measurements (1 km and 5 km), suggest that there are five and three relevant factors for each scale respectively. At the 1 km scale, the first factor can be interpreted as describing the intensity of land use in the form of proportion arable land which is highly correlated to crop yield. The second and third factors are more connected to landscape structure and amount of small patches of semi-natural habitats. The fourth and fifth factors contain one major variable each: proportion pasture and leys respectively. The division of intensity and complexity related variables is less clear at a larger spatial scale. At the 5 km scale, factor I is defined almost identically as at the 1 km scale. However, factors 2 and 3 are interpreted as descriptors of dairy and livestock farming systems but also include structural variables. Our analyses suggest that land use intensity and structural complexity of landscapes are more or less separate landscape level factors, at least at smaller spatial scales. This is important to bear in mind, especially when trying to explain patterns of biodiversity change in agricultural landscapes. (C) 2009 Elsevier B.V. All rights reserved.},
  author       = {Persson, Anna and Olsson, Ola and Rundlöf, Maj and Smith, Henrik},
  issn         = {1873-2305},
  keyword      = {Land use intensity,Landscape heterogeneity,Landscape complexity,Agriculture,Farmland},
  language     = {eng},
  number       = {1-2},
  pages        = {169--176},
  publisher    = {Elsevier},
  series       = {Agriculture, Ecosystems & Environment},
  title        = {Land use intensity and landscape complexity-Analysis of landscape characteristics in an agricultural region in Southern Sweden},
  url          = {http://dx.doi.org/10.1016/j.agee.2009.12.018},
  volume       = {136},
  year         = {2010},
}