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

Provider:

Prince George's County GIS Open Data

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:

2015-02-10

Place:

Maryland--Prince George's County, Maryland

Access Rights:

Public

Format:

Shapefile

Language:

English

Date Added:

2021-04-27