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Understanding the Benefits from green areas in Rome: The Role of Evergreen and Deciduous Species in Carbon Dioxide Sequestration Capability

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American Journal of Plant Sciences 2020年第8期11卷 1307-1318页

作者： Loretta Gratani Department of Environmental Biology Sapienza University of Rome Rome Italy

Urban areas are a major source of anthropogenic carbon dioxide (CO2) emissions because of road traffic and local heating with natural gas, oil or coal. Rome is among the largest European cities (129,000 ha) with a large volume of green areas (69.6% of the total Municipality area). The CO2 sequestration (CS) capability for the greenery extending for about 300 km2 inside the area delimited by the Great Ring Road (GRA) in Rome was calculated combining satellite data with CS data measured in the field. Data from Sentinel-2 were collected and the Normalized Difference Vegetation Index (NDVI) was computed on a pixel-base. Three plant classes homogeneous in terms of annual NDVI profile were identified: deciduous trees (DT), evergreen trees (ET) and meadows (M) covering an area of 14,142.027 ha within the GRA, of which M had the highest percentage (48%), followed by DT (27%) and ET (25%). CS ranged from 428,241,492.9 Tons CO2 year-1 (ET) to 263,072,460.6 Tons CO2 year-1 (M). The total CS of the greenery inside the GRA was 1049,490,355.4 Tons CO<

关键词： CO2 Sequestration green areas Cities Evergreens Deciduous Species Meadows

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Temperature Comfort, Recreation and Historical Features in Open Spaces;the Path of Remembrance and Comradeship (PATH) in Ljubljana, Slovenia

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Journal of Architectural Environment & Structural Engineering Research 2019年第3期2卷 7-14页

作者： Alenka Fikfak Miha Konjar Janez Peter Grom Saja Kosanovic Martina Zbašnik-Senegačnik Faculty of Architecture University of LjubljanaSlovenia Department for Architecture Faculty of Technical SciencesUniversity of PrištinaKosovska MitrovicaKosovo

The built environment has a great impact on the quality of urban climate,a comfortable living environment,overheating,and detection of changes in Urban Heat Islands(UHI).Despite the effects that raised outdoor temperatures have on human well-being and health,being in open outdoor spaces is strongly encouraged.This article deals with open green urban areas.The study was focused on searching for the relationships between the various elements,such us outdoor thermal comfort,the urban heat island,green areas,and active leisure time.The well-being in open spaces has be studied on the case of The Path of Remembrance and Comradeship(PATH)in the city of Ljubljana,Slovenia.PATH is a circular recreation ground(almost 33 km long)and passes from the urban to the natural landscape area.PATH constitutes an important element of the urban space and confirms the identity and image of Ljubljana.It is most popular for walking and jogging.Overheating at the PATH was studied using multiple indicators,which were broken down into detail at five sites with different urban morphology,green areas,water,and paved areas.

关键词： UHI Recreational area Open spaces Urban morphology green areas

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