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This dataset was developed as part of an Urban Tree Canopy (UTC) assessment for Prince Georges County, Maryland. It shows how tree canopy changed during the period 2009-2014, highlighting trees that were gained or lost during the 5-year period. It is intended for use in monitoring patterns of change in Prince Georges County's tree canopy. |
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This dataset was developed as part of an Urban Tree Canopy (UTC) assessment for Prince Georges County, Maryland. It shows how tree canopy changed during the period 2009-2014, highlighting trees that were gained or lost during the 5-year period. It is intended for use in monitoring patterns of change in Prince Georges County's tree canopy. |
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The University of Vermont Spatial Analysis Laboratory created this map with funding from the Maryland-National Capital Park and Planning Commission. |
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This layer is a high-resolution tree canopy change-detection layer for Prince Georges County, Maryland. It contains three tree-canopy classes for the period 2009-2014: (1) No Change; (2) Gain; and (3) Loss. It was created by first mapping tree canopy in 2014 using LiDAR and multispectral data and then comparing the new map directly to an existing tree-canopy map for the year 2009. Tree canopy that existed during both time periods was assigned to the No Change category while trees removed by development, storms, or disease were assigned to the Loss class. Trees planted during the interval were assigned to the Gain category, as were the edges of existing trees that expanded noticeably. Direct comparison was possible because both the 2009 and 2014 maps were created using object-based image analysis (OBIA) and included similar source datasets (LiDAR-derived surface models, multispectral imagery, and thematic GIS inputs). No accuracy assessment was conducted, but the dataset was subjected to comprehensive manual review and correction. |
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Creative Commons Attribution CC BY https://creativecommons.org/licenses/by/4.0/. You can copy, modify, distribute, and perform analysis on the data, even for commercial purposes, all without asking permission, but please provide attribution to the Prince George's County Planning Department. The Planning Department makes no warranties about the data, and disclaims liability for all uses of the data, to the fullest extent permitted by applicable law. |
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PGCOITGIS02.DBO.Tree_Canopy_2009_2014_Chg_Py |
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["tree canopy","change detection","urban","Prince Georges County","Maryland","2009-2014"] |
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en-US |
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NaN |
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