Youngsinn Sohn
Ph.D., University of Utah, 1994
Assistant Professor
Office: 211-M Sondheim Hall
Phone: 410-455-3149 Fax: 410-455-1056
Email Address: ysohn@umbc.edu
Research Interests: Analytical mapping of forests/biotic communities and urban growth, GIS and remote sensing, Land use land cover change, Environmental history
Recent Research Activities: My research has mainly focused on: (1) analytical mapping and monitoring of forests and vegetation communities, terrestrial environment, and urban growth; (2) studies of vegetation dynamics and anthropogenic disturbances in the successional forests and vegetation communities of northwestern Pennsylvania and southeastern Arizona; (3) monitoring urban growth in Washington, DC-Baltimore area; and (4) environmental history and reconstruction of cultural and forest landscapes from land survey records. I utilize GIS and remote sensing for analytical mapping and monitoring of forests, vegetation communities, addressing land cover land use changes, and monitoring urban growth.

Presently, my research is centered on the evaluation of different forest mapping methods and algorithms through collaborative efforts among NASA Land Cover Land Use Change (LCLUC) science team members. The project is funded by NASA LCLUC program. The major theme of the project is the evaluation of forest mapping/monitoring algorithms and methods and acquiring agreeable forest mapping methods for operational forest monitoring, and demonstration of the unique role of Landsat TM data in mapping and monitoring forest cover characteristics and vegetation communities in different biotic regions.
Recent Publications: Sohn, Y. and J. Qi, 2005. Mapping Biotic Communities in the Upper San Pedro Valley of Southwestern Arizona using Landsat 7 ETM+ Data and Supervised Spectral Angle Classifier,  Photogrammetric Engineering & Remote Sensing, 71 (6): 709-718.

Analytical Mapping of Detailed Biotic Communities: A simple, elegant mapping approach (Y. Sohn), International Symposium on Spectral Sensing Research (ISSSR) 2003 Proceedings, 2003.


Supervised and Unsupervised Spectral Angle Classifiers (Y. Sohn and S. Rebello), 2002, Photogrammetric Engineering & Remote Sensing, 68 (12): 1271-1280.


Developing a Robust Forest Cover Mapping/Monitoring System at Regional Scale using an Improved Algorithm and Landsat TM Data (Y. Sohn, C. E. Williams, and R.L. White), ASPRS 2000 Proceedings, 2000.


Deforestation in North-Central Yucatan (1985-1995). Mapping Secondary Succession of Forest and Agricultural Land Use in Sotuta using a Spectral Pattern Matching Approach (Y. Sohn, E. Moran, and F. Gurri), 1999, Photogrammetric Engineering & Remote Sensing, 65 (8):947-958.


Mapping Desert Shrub Rangeland using Spectral Unmixing and Modeling Spectral Mixtures with TM Data (Y. Sohn and R. McCoy), 1997, Photogrammetric Engineering & Remote Sensing, 63 (6): 707-716.
Recent Presentations: Cartography, Analytical Mapping, and GIS (Y. Sohn and J. Short), presented at the AAG centennial meeting, Philadelphia, March 15-19, Abstracted in Association of American Geographers Centennial Meeting Abstracts, 2004

Analytical Mapping of Detailed Biotic Communities: A simple, elegant mapping approach (Y. Sohn), presented at The International Symposium on Spectral Sensing Research (ISSSR ) 2003 Conference, Santa Barbara, California, June 2-6, 2003

Developing a Robust Forest Cover Mapping/Monitoring System at Regional Scale using an Improved Algorithm and Landsat TM Data (Y. Sohn, C. E. Williams, and R.L. White), presented at The ASPRS 2000 Annual Conference, Washington, DC, May 25, 2000

Re-Visiting Feminism's Impact on Geography (Gerald Thomas and Youngsinn Sohn), presented at The Twelfth Annual Tri-State Teaching Women's Studies Conference, Indiana, Pennsylvania, March 20, 1999.
Recent Awards: 2003 Boeing Autometric Award for Best Paper in Image Analysis and Interpretation, May 8, 2003 by the American Society for Photogrammetry and Remote Sensing (ASPRS) for the paper: Supervised and Unsupervised Spectral Angle Classifiers (Y. Sohn and N.S. Rebello), 2002, Photogrammetric Engineering & Remote Sensing, 68 (12): pp1271-1280

2000 ERDAS Award for Best Paper in Remote Sensing, 2nd place, May 25, 2000 by the American Society for Photogrammetry and Remote Sensing (ASPRS) for the paper: Deforestation in North-Central Yucatan (1985-1995). Mapping Secondary Succession of Forest and Agricultural Land Use in Sotuta using a Spectral Pattern Matching Approach (Y. Sohn, E. Moran, and F. Gurri), 1999, Photogrammetric Engineering & Remote Sensing, 65 (8):947-958

Courses Taught: GES386/686 Introduction to Geographic Information Systems
GES 486/687 Advanced Applications of Geographic Information Systems
GES 481/681 Digital Image Analysis for Environmental Applications