Professor of soil science. University of Wisconsin. Department of Soil Science, FD Hole Soils

Wuhan University

Zhejiang University

forskarassistent i markvetenskap, SLU

McGill University

University of Wisconsin–Madison

Department of Environment, Ghent University

Professor at University of Tuscia, Department of Agriculture and Forest Sciences (DAFNE)

University of Peradeniya

Assistant Professor, Aarhus University