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My current research focuses on these following topics.


1. Riverine carbon export from watershed, currently focusing on water carbon measure using in situ spectral measurement and hyperspectral remote sensing image.

(Collaborate with RF Chen, YQ Tian and BG Gardner in Dept. of EEOS, UMass-Boston)


We collect in situ underwater fluorescence data and above surface spectral data in the Neponset River MA, Hudson River NY(including Passaic River, Hackensack River, Raritan River, Newark Bay, New York Bay), and Mississippi River MS (including Atchafalaya River, North Gulf).

ASD Fieldspec and Oceanoptics Jaz are used for field spectral measurement. For coastal study, we are interested in sensor with better spatial resolution compared to regular ocean sensors, such as EO-1 Hyperion image.


Aug 2007, AT and MS, on R/V Pelican

Aug 2010, Hudson, on R/V Sharp

In situ spectroradiometer

Towed EcoShuttle for underwater fluorescence

Lab in RV Pelican

Above surface radiance and sky irradiance

Caught a Fish

Access tributaries with RV Neritic

2. Aquatic biomass monitoring and assessment from in situ spectral measurement and high resolution satellite imagery.

(Collaborate with Y Tian@UMB, M. Zimmerman, C. Waldron@ USGS MA-RI Water Science Center, and S. Flint@ OAR )

We use ASD field spectral and IKONOS image for aquatic plant type and biomass monitoring.


Impoundments with severe eutrophication in MA

Collect bright spectra for atmospheric correction


3. Object-based classification and vegetation information (biophysical parameters and vegetation species) extraction from high resolution and hyperspectral remote sensing imagery.


My research on the characterization of terrestrial vegetation has been carried on since my Ph.D work about vegetation classification using high spatial resolution remote sensing.  In a collaborative project, we employed the first spaceborne hyperspectral sensor (EO-1 Hyperion) image to extract forest biophysical parameters, which are highly related to biomass.  Recently, I collaborated with Prof. Ruiliang Pu of the University of South Florida to apply this object-based method for detailed land cover classification in a coastal urban environment and the result is promising. 


4. Greenhouse gas emission and soil respiration

(Collaborate with Jim Tang @ Marine Biology Lab, Woods Hole)


We set a gas analyzer in a corn field at UMass research farm to monitor CO2 emission from farm land. In summer 2010, we supervised three REU students measured soil respiration in Prospect Hill of Harvard Forest. The sampling design and result interpolation is based on vegetation type and soil type analysized in GIS.


Infrared gas analyzer in Deerfield

Soil Respiration and Moisture in Harvard Forest


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