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- W2772069579 abstract "Urban areas are sources of land use change and CO2 emissions that contribute to global climate change. Despite this, assessments of urban vegetation carbon stocks often fail to identify important landscape-scale drivers of variation in urban carbon, especially the potential effects of landscape structure variables at different spatial scales. We combined field measurements with Light Detection And Ranging (LiDAR) data to build high-resolution models of woody plant aboveground carbon across the urban portion of Brisbane, Australia, and then identified landscape scale drivers of these carbon stocks. First, we used LiDAR data to quantify the extent and vertical structure of vegetation across the city at high resolution (5 × 5 m). Next, we paired this data with aboveground carbon measurements at 219 sites to create boosted regression tree models and map aboveground carbon across the city. We then used these maps to determine how spatial variation in land cover/land use and landscape structure affects these carbon stocks. Foliage densities above 5 m height, tree canopy height, and the presence of ground openings had the strongest relationships with aboveground carbon. Using these fine-scale relationships, we estimate that 2.2 ± 0.4 TgC are stored aboveground in the urban portion of Brisbane, with mean densities of 32.6 ± 5.8 MgC ha− 1 calculated across the entire urban land area, and 110.9 ± 19.7 Mg C ha− 1 calculated within treed areas. Predicted carbon densities within treed areas showed strong positive relationships with the proportion of surrounding tree cover and how clumped that tree cover was at both 1 km2 and 1 ha resolutions. Our models predict that even dense urban areas with low tree cover can have high carbon densities at fine scales. We conclude that actions and policies aimed at increasing urban carbon should focus on those areas where urban tree cover is most fragmented." @default.
- W2772069579 created "2017-12-22" @default.
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- W2772069579 date "2018-05-01" @default.
- W2772069579 modified "2023-10-08" @default.
- W2772069579 title "Identification of fine scale and landscape scale drivers of urban aboveground carbon stocks using high-resolution modeling and mapping" @default.
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- W2772069579 doi "https://doi.org/10.1016/j.scitotenv.2017.11.255" @default.
- W2772069579 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29202369" @default.
- W2772069579 hasPublicationYear "2018" @default.
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