Date of Award

Summer 8-2-2024

Document Type

Thesis

Degree Name

Master of Arts (MA)

Department

Geography

First Advisor

Andrew Reinmann

Second Advisor

Wenge Ni-Meister

Academic Program Adviser

Jochen Albrecht

Abstract

This project addresses the need for accessible, cost-effective tools for quantifying spatial and temporal changes in tree canopy cover in urban areas. Urban tree canopy provides a wide range of ecosystem services, including lowering air temperatures, reducing pollution, and mitigating stormwater runoff. Cities around the world have placed the expansion of their urban forests at the center of their sustainability goals. Consistent and timely data on urban tree canopy is essential for urban greening initiatives to succeed. Existing methods of accessing information about urban tree canopy are highly technical, costly, and labor-intensive, while the freely available source of tree canopy cover data from the National Land Cover Database (NLCD) is known to underestimate tree canopy cover in urban areas. I developed a machine learning approach to mapping urban tree canopy using data from publicly available satellite imagery from NASA and the European Space Agency (ESA) with the goal of filling in the temporal and spatial gaps in lidar-derived data and offering relatively accessible, up-to-date, and accurate information on urban tree canopy.

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