Neighbourhood greenness and income of occupants in four German areas: GINIplus and LISAplus
File(s)Greenness_SES_paper_20161129_accepted.doc (1.6 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Objective
We investigated whether families with lower individual-level socioeconomic status (SES) reside in less green neighbourhoods in four areas in Germany.
Methods
Data were collected within two German birth cohorts – GINIplus and LISAplus. Net equivalent household income was categorized into study area-specific tertiles and used as a proxy for individual-level SES. Neighbourhood greenness was calculated in 500-m buffers around home addresses as: 1) the mean normalized difference vegetation index (NDVI); 2) percent tree cover. Associations between income and neighbourhood greenness were assessed per study area using adjusted linear regression models.
Results
In the Munich and Leipzig areas, families in the low and medium income tertiles resided in neighbourhoods with lower NDVI compared to those in the high income tertile (mean percent change in NDVI: −4.0 (95% confidence interval = −6.7 to −1.3) and −5.5 (−10.9 to −0.2), respectively). In contrast, in the Wesel area, families in the low income tertile resided in neighbourhoods with higher NDVI (2.9 (0.5–5.3)). Only the association in the Munich area was replicated when using tree cover instead of the NDVI.
Conclusions
This study provides suggestive evidence that the presence and direction of associations between greenness and SES is region-specific in Germany. The degree of urbanization did not clarify this heterogeneity completely.
We investigated whether families with lower individual-level socioeconomic status (SES) reside in less green neighbourhoods in four areas in Germany.
Methods
Data were collected within two German birth cohorts – GINIplus and LISAplus. Net equivalent household income was categorized into study area-specific tertiles and used as a proxy for individual-level SES. Neighbourhood greenness was calculated in 500-m buffers around home addresses as: 1) the mean normalized difference vegetation index (NDVI); 2) percent tree cover. Associations between income and neighbourhood greenness were assessed per study area using adjusted linear regression models.
Results
In the Munich and Leipzig areas, families in the low and medium income tertiles resided in neighbourhoods with lower NDVI compared to those in the high income tertile (mean percent change in NDVI: −4.0 (95% confidence interval = −6.7 to −1.3) and −5.5 (−10.9 to −0.2), respectively). In contrast, in the Wesel area, families in the low income tertile resided in neighbourhoods with higher NDVI (2.9 (0.5–5.3)). Only the association in the Munich area was replicated when using tree cover instead of the NDVI.
Conclusions
This study provides suggestive evidence that the presence and direction of associations between greenness and SES is region-specific in Germany. The degree of urbanization did not clarify this heterogeneity completely.
Date Issued
2017-01
Date Acceptance
2016-11-16
Citation
Urban Forestry & Urban Greening, 2017, 21, pp.88-95
ISSN
1618-8667
Publisher
Elsevier
Start Page
88
End Page
95
Journal / Book Title
Urban Forestry & Urban Greening
Volume
21
Copyright Statement
© 2016 Elsevier GmbH. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Subjects
0705 Forestry Sciences
Forestry
Notes
publisher: Elsevier articletitle: Neighbourhood greenness and income of occupants in four German areas: GINIplus and LISAplus journaltitle: Urban Forestry & Urban Greening articlelink: http://dx.doi.org/10.1016/j.ufug.2016.11.011 content_type: article copyright: © 2016 Elsevier GmbH. All rights reserved.
Publication Status
Published
Date Publish Online
2016-11-21