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

Provider:

Data Downloads - Montgomery Planning

Resource Class:

Datasets

Resource Type:

Vector data and LiDAR

Subject:

Trees, Tree canopies, and Intergovernment records

Theme:

Environment and Land cover

Temporal Coverage:

2009-2014

Date Issued:

2014-12-30

Place:

Maryland--Montgomery County, Maryland

Access Rights:

Public

Format:

Geodatabase

Language:

English

Date Added:

2021-04-27