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摘要:
Building, a main greenhouse gas source, accounts for approximately 38% of all carbon emissions, and whole-life -cycle carbon emissions from building operations account for 60%-80% of construction-related emissions. However, the high-resolution spatiotemporal distribution of building-operation carbon emissions is unclear. We developed a top-down method to calculate and map carbon emissions by (1) compiling a building-operations carbon-emission inventory that includes direct energy consumption and calculating the carbon emissions of four key energy-intensive sectors via an emissions-factor approach; (2) cleaning, reclassifying and assigning weights to POI data obtained from AutoNavi; and (3) using a GIS to obtain sectoral carbon emissions in each grid according to the POI weights and to overlay and map the total carbon emissions. In Beijing, overall carbon emissions peaked at 95.87 million tons (2012). Emissions showed a clustered core with a multicenter discrete radial distribution pattern. Additionally, the carbon emissions intensity peaked at 487.44 kg/m(2) (2015). The per -unit-grid carbon emissions distribution range was generally normally distributed, and the range of 10(3)-10(5) kg/ grid had the widest distribution and largest number of associated grids. Southeastern carbon emissions hotspots developed, and cold spots appeared along the periphery. This research could help planners quickly zone and reduce carbon emissions, leading to improved future development strategies.
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来源 :
JOURNAL OF CLEANER PRODUCTION
ISSN: 0959-6526
年份: 2022
卷: 376
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JCR@2022
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JCR@2022
ESI学科: ENGINEERING;
ESI高被引阀值:49
JCR分区:1
中科院分区:1
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