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. 2014 May;43(4):466-79.
doi: 10.1007/s13280-014-0507-x.

Contribution of ecosystem services to air quality and climate change mitigation policies: the case of urban forests in Barcelona, Spain

Francesc Baró  1 , Lydia Chaparro, Erik Gómez-Baggethun, Johannes Langemeyer, David J Nowak, Jaume Terradas
Affiliations

Contribution of ecosystem services to air quality and climate change mitigation policies: the case of urban forests in Barcelona, Spain

Francesc Baró et al. Ambio. 2014 May.

Abstract

Mounting research highlights the contribution of ecosystem services provided by urban forests to quality of life in cities, yet these services are rarely explicitly considered in environmental policy targets. We quantify regulating services provided by urban forests and evaluate their contribution to comply with policy targets of air quality and climate change mitigation in the municipality of Barcelona, Spain. We apply the i-Tree Eco model to quantify in biophysical and monetary terms the ecosystem services "air purification," "global climate regulation," and the ecosystem disservice "air pollution" associated with biogenic emissions. Our results show that the contribution of urban forests regulating services to abate pollution is substantial in absolute terms, yet modest when compared to overall city levels of air pollution and GHG emissions. We conclude that in order to be effective, green infrastructure-based efforts to offset urban pollution at the municipal level have to be coordinated with territorial policies at broader spatial scales.

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Figures

Fig. 1
Fig. 1
Location of Barcelona municipality and main green spaces. Source: Own elaboration based on Natural Earth datasets (www.naturalearthdata.com) and 3rd edition of the Ecological Map of Barcelona (Burriel et al. 2006)
Fig. 2
Fig. 2
Framework for assessing links between ecosystem services and disservices, urban policy targets, and air pollution and GHG levels in Barcelona. Notes: air quality policy limits correspond to the most stringent EU values set for the protection of human health (in brackets the averaging period applicable for each limit). Some limits are subject to a specific number of allowed exceedances (e.g., PM10 limit can be exceeded 35 days per year at the most). See EEA (2013) for more details. Air pollution levels in Barcelona show the highest concentration values among all the monitoring stations measuring the corresponding air pollutant during the year 2011 (in brackets the number of monitoring stations exceeding the air quality limit after considering the number of allowed exceedances). See ASPB air quality report (2011) for more details. Arrows represent the links between ecosystem services and disservices, air pollution and GHG levels and urban policy targets in Barcelona (red arrows represent a negative impact towards policy targets and green arrows a positive impact). Sources: Own elaboration based on EEA (2013), ASPB air quality report (2011) and PECQ (2011)
Fig. 3
Fig. 3
Land use classes and location of sample plots within the municipality of Barcelona. Source: Own elaboration based on the 3rd edition of the Ecological Map of Barcelona (Burriel et al. 2006)
Fig. 4
Fig. 4
Monthly and annual air pollution removal by air pollutant (urban forests of the municipality of Barcelona, year 2008)
See this image and copyright information in PMC

References

    1. ASPB air quality report. 2011. Report on evaluation of the air quality in the city of Barcelona, year 2011. Agency for Public Health of Barcelona (ASPB), Barcelona, Spain, 75 pp (In Catalan).
    1. Baik JJ, Kwak KH, Park SB, Ryu YH. Effects of building roof greening on air quality in street canyons. Atmospheric Environment. 2012;61:48–55. doi: 10.1016/j.atmosenv.2012.06.076. - DOI
    1. Baldocchi DD, Hicks BB, Camara P. A canopy stomatal resistance model for gaseous deposition to vegetated surfaces. Atmospheric Environment. 1987;21:91–101. doi: 10.1016/0004-6981(87)90274-5. - DOI
    1. Barcelona City Council Statistical Yearbook. 2012. Department of Statistics, Barcelona City Council, Barcelona, Spain (In Spanish). Retrieved December 20, 2012, from http://www.bcn.cat/estadistica.
    1. Barcelona Green Infrastructure and Biodiversity Plan 2020. 2013. Edited by Environmental and Urban Services. Urban Habitat Department. Barcelona City Council. Retrieved April 30, 2013, from http://www.bcn.cat/mediambient.

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