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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:21 |
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Conference: Bucharest University Faculty of Physics 2015 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Assessment of climate and anthropogenic pressures impacts on urban vegetation dynamics from satellite data
Authors:
Claudia Elena DUMITRU (1,2)
Affiliation:
(1)UnIVERSITY OF BUCHAREST,FACULTY OF PHYSICS, P.O.BOX, MG-11, Magurele, Bucharest, Romania
(2)National Institute of Optoelectronics, INOE2000, Magurele, Ilfov, Romania
E-mail
petrescu_claudiae@yahoo.com
Keywords:
urban vegetation, satellite data, climate and anthropogenic impacts, Bucharest
Abstract:
Urban green spaces play a major role in city areas through their environmental, aesthetic, social and economic benefits to residents’ health and wellbeing. From an environmental standpoint, urban green contributes to Urban Heat Island reduction, carbon sequestration, mitigation of storm-runoff effects, absorption of urban air pollutants and air quality improvement, noise reduction, and microclimate regulation. Urban environmental quality is defined with respect to amount of green spaces and air quality, where areas lacking green spaces and high pollutant concentration leads to low environmental quality. During last years climate (including extreme climate events) and anthropogenic pressures have profound implications for urban/periurban green land cover, infrastructure and society. Especially, temperature-related climate extremes like heat and cold waves, and heat island phenomena have been shown to be strongly related to human health. This paper analyzes observed changes related with urban/periurban green land cover dynamics in Bucharest metropolitan area in Romania during 2000-2013 period using time-series NOAA AVHRR, MODIS Terra/Aqua, Landsat TM/ETM satellite and in situ-monitoring climate data. Green space areas were extracted from satellite imagery using Normalized Difference Vegetation Index (NDVI) and further analyzed quantitatively with air quality indicators and climate parameters. Their precise temporal and spatial assessment is crucial for the understanding of vegetation processes and for the parameterization of ecosystem models that quantify carbon, water, and energy fluxes. Vegetation dynamics in urban areas at seasonal and longer timescales reflect large-scale interactions between the terrestrial biosphere and the climate system. This papers provides valuable insights for urban planners and decision makers in their endeavors for future development planning of Bucharest metropolitan area.
Acknowledgement:
The author thanks to Dr. Maria Zoran for her help in satellite data processing and important suggestions to finalize the work.
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