Datasets > Vector data, LiDAR > Maryland--Montgomery County > 2005-2009

Tree Canopy Change, Land Cover: Montgomery County, Maryland, 2009-2014

University of Vermont Spatial Analysis Laboratory · 2009 Full Details

Full Details

Title
Tree Canopy Change, Land Cover: Montgomery County, Maryland, 2009-2014
Description
This layer is a high-resolution tree canopy change-detection layer for Montgomery 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 extracting tree canopy from an existing high-resolution land-cover map for 2009 and a high resolution tree canopy map for 2014 and then comparing the mapped trees directly. 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 thorough manual review and correction.
Creator
University of Vermont Spatial Analysis Laboratory
Subject
Trees, Tree canopies, Intergovernment records
Temporal Coverage
2009-2014
Date Issued
2014-12-30
Access Rights
Public
Format
Geodatabase
Language
English
Date Added
April 27, 2021

Location

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Cite and Reference

  • Citation
    University of Vermont Spatial Analysis Laboratory (2014). Tree Canopy Change, Land Cover: Montgomery County, Maryland, 2009-2014. . https://montgomeryplanning.org/tools/gis-and-mapping/data-downloads (dataset)
  • BTAA Geoportal Link

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