Datasets > Vector data, LiDAR > Maryland--Prince George's County > 2005-2009

Tree Canopy Change, Derived from Planimetric Land Cover & Elevation Data: Prince George's County, Maryland, 2009-2014

The University of Vermont Spatial Analysis Laboratory · 2009 Full Details

Full Details

Title
Tree Canopy Change, Derived from Planimetric Land Cover & Elevation Data: Prince George's County, Maryland, 2009-2014
Description
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.
Creator
The University of Vermont Spatial Analysis Laboratory
Subject
Trees, Tree canopies, Intergovernment records
Temporal Coverage
2009-2014
Date Issued
2015-02-10
Access Rights
Public
Format
Shapefile
Language
English
Date Added
April 27, 2021

Location

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Links

Cite and Reference

  • Citation
    The University of Vermont Spatial Analysis Laboratory (2015). Tree Canopy Change, Derived from Planimetric Land Cover & Elevation Data: Prince George's County, Maryland, 2009-2014. . http://gisdata.pgplanning.org/opendata/ (dataset)
  • BTAA Geoportal Link

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