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Open AccessCommunication

Measuring Multi-Scale Urban Forest Carbon Flux Dynamics Using an Integrated Eddy Covariance Technique

1
School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China
2
Research Center of Urban Ecology and Environment, Shanghai Normal University, Shanghai 200234, China
3
College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
4
Functional and Ecosystem Ecology Unit (EFE), Biology Program, Faculty of Natural Sciences and Mathematics, Universidad del Rosario, Bogotá D.C. 111221492, Colombia
5
School of Forest Resources and Conservation, University of Florida, Gainesville, FL 32611, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Sustainability 2019, 11(16), 4335; https://doi.org/10.3390/su11164335
Received: 14 July 2019 / Revised: 4 August 2019 / Accepted: 4 August 2019 / Published: 11 August 2019
The multi-scale carbon-carbon dioxide (C-CO2) dynamics of subtropical urban forests and other green and grey infrastructure types were explored in an urbanized campus near Shanghai, China. We integrated eddy covariance (EC) C-CO2 flux measurements and the Agroscope Reckenholz-Tänikon footprint tool to analyze C-CO2 dynamics at the landscape-scale as well as in local-scale urban forest patches during one year. The approach measured the C-CO2 flux from different contributing areas depending on wind directions and atmospheric stability. Although the study landscape was a net carbon source (2.98 Mg C ha−1 yr−1), we found the mean CO2 flux in urban forest patches was −1.32 μmol m−2s−1, indicating that these patches function as a carbon sink with an annual carbon balance of −5.00 Mg C ha−1. These results indicate that urban forest patches and vegetation (i.e., green infrastructure) composition can be designed to maximize the sequestration of CO2. This novel integrated modeling approach can be used to facilitate the study of the multi-scale effects of urban forests and green infrastructure on CO2 and to establish low-carbon emitting planning and planting designs in the subtropics. View Full-Text
Keywords: carbon dioxide offsets; ART footprint tool; urban ecosystems; nature-based solutions; green infrastructure carbon dioxide offsets; ART footprint tool; urban ecosystems; nature-based solutions; green infrastructure
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MDPI and ACS Style

Zhang, K.; Gong, Y.; Escobedo, F.J.; Bracho, R.; Zhang, X.; Zhao, M. Measuring Multi-Scale Urban Forest Carbon Flux Dynamics Using an Integrated Eddy Covariance Technique. Sustainability 2019, 11, 4335.

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