His NSERC-funded research program involves remote sensing, GIS, and earth system science modeling in studies of global environmental change and terrestrial ecosystem dynamics, with applications in forestry, agriculture, water, mountain terrain analysis, and integrated resource management, and supported by algorithm development. He has participated in numerous international research programs and field campaigns as scientist and/or principal investigator, and published over 140 papers including over 60 in refereed scientific journals and 6 that received best paper awards at national/international symposia. He is presently an Associate Editor on the Editorial Board of the Canadian Journal of Remote Sensing and has served on a variety of national and international science advisory committees and review panels such as NASA, NSF (USA), NERC (UK), CSIRO Australia, and various agencies in Canada as well as international journal reviewer (IJRS, RSE, IEEE, PE&RS, JGR, CJRS etc.).