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About:

• Ph.D. in Geography (State University of New York at Buffalo) 
• MS in Computer Science and Engineering (State University of New York at Buffalo)
• MS in Ecology (Chinese Academy of Sciences )
• BS in Geography (Peking University)

Research Interests: 

• GIS, Remote Sensing, Spatial Data Analysis & Modeling 

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• Spatial Data Analysis
• Principles of GIS
• Applications of GIS 
• Programming in GIS
• Internet GIS
• Advanced Topics in GIS
• Advanced Remote Sensing (Object-Based Image Analysis)

Selected Recent Publication 

• Forbes, D.J. and Z. Xie, 2018. Identifying process scales in the Indian River Lagoon, Florida using the wavelet transform analysis of dissolved oxygen, Ecological Complexity, 36: 149-167.
• Xie Z., and Ziegler H, 2017. Mapping Urban Population at Housing Unit Level with Integrated Geospatial Technology, Reference Module in Earth Systems and Environmental Sciences, Elsevier, 2017. 16-Sep-16 doi: 10.1016/B978-0-12-409548-9.10420-8.
• Leonardo Calle, Dale E. Gawlik, Zhixiao Xie, Lauri Green, Brian Lapointe, and Allan Strong 2016. Effects of tidal periodicities and diurnal foraging constraints on the density of foraging wading birds. The Auk: July 2016, Vol. 133, No. 3, pp. 378-396.
• Telis, P.A., Xie, Z., Liu, Zhongwei, Li, Yingru, And Conrads, P.A., 2015. The Everglades Depth Estimation Network (Eden) Surface-Water Model, Version 2: U.S. Geological Survey Scientific Investigations Report 2014–5209, 42
• Xie, Z. and J. Yan 2013. “Detect Traffic Accident Clusters with Network Kernel Density Estimation and Local Spatial Statistics: An Integrated Approach”. Journal of Transport Geography, 31: 64-71.
• Xie., Z., Z. Liu, and Y. Li, 2013. “Validation of the Everglades Depth Estimation Network (EDEN) Water-Surface Models”, Papers in Applied Geography, 36:98-106.
• Zhang, C., D. Selch, Z. Xie, C. Roberts, H. Cooper, and G. Chen, 2013. Object-based Benthic Habitat Mapping in the Florida Keys from Hyperspectral Imagery. Estuarine, Coastal and Shelf Science, 134, 88-97.
• Johnson, B., and Z. Xie 2013. “Classifying a high-resolution image of an urban area using super-object information”. ISPRS Journal of Photogrammetry and Remote Sensing, 83: 40-49.
• Zhang, C., and Z. Xie 2013. “Data fusion and classifier ensemble techniques for vegetation mapping in the Everglades”. Geocarto International, 1-16, DOI:10.1080/10106049.2012.756940.
• Zhang, C., and Z. Xie 2013. “Object-based Vegetation Mapping in the Kissimmee River Watershed Using HyMap Data and Machine Learning Techniques”. Wetlands, 33:233–244.
• Xie, Z., Zhang, C., and L. Berry 2012. Geographically Weighted Modeling of Surface Salinity in Florida Bay Using Landsat TM Data. Remote Sensing Letters, 4(1), 76-84.
• Zhang, C., and Z. Xie 2012. Combining Object-based Texture Measures with a Neural Network for Vegetation Mapping in the Everglades from Hyperspectral Imagery”. Remote Sensing of Environment, 124: 310-320.
• Xie, Z., L. Pearlstine, and D.E. Gawlik 2012. “Develop a Finer Resolution DEM to Support Hydrological Modeling and Ecological Study in the Northern Everglades Freshwater Wetland”. GIScience & Remote Sensing, 49(5): 664-686.
• Johnson, B., and Z. Xie, 2011. Unsupervised image segmentation evaluation and refinement using a multi-scale approach. ISPRS Journal of Photogrammetry and Remote Sensing, 66: 473–483.
• Xie, Z., Zhongwei Liu, John W. Jones, Aaron L. Higer, and Pamela A. Telis 2011. Landscape unit based digital elevation model development for the freshwater wetlands within the Arthur C. Marshall Loxahatchee National Wildlife Refuge, Southeastern Florida. Applied Geography 31 (1): 401-412.
• Xie, Z., D.E. Gawlik, J. M. Beerens, Z. Liu, A. L. Higer 2009. Variability Patterns And Outlier Smoothing Of The Everglades Depth Estimation Network Digital Elevation Model In The Northern Everglades. Papers of the Applied Geography Conferences (2009) 32: 342-35.
• Kuby, M., L. Lines, R. Schultz, Z. Xie, J. Kim, and S. Lim 2009. Optimization of Hydrogen Stations in Florida Using the Flow-Refueling Location Model, International Journal of Hydrogen Energy 34: 6045 – 6064.
• Xie, Z. and L. Bian 2009. Using spatial continuity and discontinuity information for content-based geographic image retrieval. Geocarto International 24(1): 3-23.
• Xie, Z., C. Roberts, and B. Johnson 2008. Object-Based Target Search Using Remotely Sensed Data: A Case Study in Detecting Invasive Exotic Australian Pine in South Florida. ISPRS Journal of Photogrammetry and Remote Sensing 63(6):647-660.
  
  
• Xie, Z. and J. Yan 2008. Kernel Density Estimation Of Traffic Accidents In A Network Space. Computers, Environment and Urban Systems 32: 396–406.
• Lines, L, M. Kuby, R. Schultz, J. Clancy, and Z. Xie 2008. A rental car strategy for commercialization of hydrogen in Florida. International Journal of hydrogen energy 33:5312 – 5325.
• Xie, Z. 2006. A Framework for Interpolating Population Surface at the Residential Housing Unit Level. GIScience & Remote Sensing 43 (3): 1-19.
• Zheng, Y., Z. Xie, C. Roberts, L. Jiang, and H. Shimizu 2006. Did climate drive ecosystem change and induce desertification in Otindag sandy land, China over the past 40 years? Journal of Arid Environments 64: 523-541.
• Xie, Z. and F. Qiu 2005. Issues on the use of variogram-based feature vectors in content-based image retrieval. Florida Geographer 36: 41-60.
• Zheng, Y., Z. Xie, Y. Yu, L. Jiang, and H. Shimizu 2005. Model simulation and comparison of the ecological characteristics of three degraded grassland types in China. Belgian Journal of Biology 138(2):109-118.
• Xie, Z. 2004. A rotation and flip invariant algorithm for representing spatial continuity information of geographic images in content-based image retrieval. Computers & Geosciences, 30 (9-10): 1093-1104..
• Bian, L., and Z. Xie 2004. A spatial dependence approach to retrieving industrial complexes from digital images. Professional Geographer, 56 (3): 381-393.

Selected Projects 

• 2019-2022 Collaborative Research: GP-IMPACT: A Geopathway Utilizing High-Tech Geoscience Experiences for Recruitment and Retention -- A Collaboration between PBSC and ����Vlog. PI, (����Vlog Co-PIs/Senior Personnel, Evonne Rezler, Russ Ivy, Tiffany Briggs, Xavier Comas, James Gammack-Clark, Nancy Romance),  $315,000 (����Vlog portion $258,076), funded by National Science Foundation (NSF). funded by National Science Foundation (NSF). 
• 2019-2020 Watershed Master Planning Initiative Pilot Program, Phone One. $1.7 Million, Funded through Florida Department of Emergency Management's (FDEM) Hazard Mitigation Grant Program (HMGP) DR-4337-004-P. One of the Co-PIs (PI: Frederick Bloetscher)
• 2008-2013 Everglades Digital Elevation Model and Digital Water Surface Model development through the USGS Everglades Depth Estimation Network (EDEN) project: Dr. Xie has been a PI on a series of EDEN projects funded by the USGS.
• "The Everglades Depth Estimation Network (EDEN) is an integrated network of real-time water-level monitoring, ground-elevation modeling, and water-surface modeling that provides scientists and managers with current (1991-present), on-line water-depth information for the entire freshwater portion of the Greater Everglades."  (http://sofia.usgs.gov/eden/).  
• 2011-2015  Research and Technical Assistance for Assessing: Climate Change, Sea Level Rise and Salinity Dynamics in the Greater Everglades, funded by the USGS, PI, Len Berry, Co-PIs, Zhixiao Xie, Caiyun Zhang
• 2010-2011 Feasibility of modeling impacts of sea level rise on foraging habitat of the Little Blue Heron in the Great White Heron National Wildlife Refuge, Funded by US Fish and Wildlife Service, PI, Dale Gawlik, Co-PI, Zhixiao Xie
• 2006-2007 Detect invasive plants in Florida coastal areas using an image retrieval approach and remote sensed data, Funded by the Florida Fish and Wildlife Conservation Commission (FFWC), PI, Zhixiao Xie, Co-PI, Charles Roberts
• 2005-2007 Location Strategies for the Initial Hydrogen Refueling Infrastructure in Florida, Funded by Florida Hydrogen Initiative, Lee Lines, Michael Kuby, Ronald Schultz, Zhixiao Xie