Land use and sustainability indicators. An introduction. Helmut Haberl, 1,* Mathis Wackernagel, 2 Thomas Wrbka 3 1 Institute for Interdisciplinary Studies of Austrian Universities, Department of Social Ecology, Schottenfeldgasse 29, 1070 Vienna, Austria Phone +43-1-5224000-401, Fax +43-1-5224000-477 http://www.iff.ac.at/socec 2 Redefining Progress, 1904 Franklin Street, Oakland CA 94612 Phone +1 510 444 3041 fax +1 510 444 3191 wackernagel@RedefiningProgress.org 3 Institute of Ecology and Conservation Biology, University of Vienna Department of Conservation Biology, Vegetation Ecology and Landscape Ecology Althanstraße 14, 1090 Vienna, Austria Phone +43-1-4277-54371, Fax +43-1-4277-9542 http://www.univie.ac.at/IECB *Email of corresponding author: helmut.haberl@univie.ac.at Key words: Sustainability; Sustainability indicators; Land use; Ecological Footprint; Socio- economic metabolism; Landscape ecology. Land Use Policy Special Issue “Land Use and Sustainability Indicators” Guest editors: H. Haberl, M. Wackernagel, T. Wrbka Published as Haberl, Helmut, Mathis Wackernagel, Thomas Wrbka, 2004. Land Use and Sustainability Indicators, an introduction. Land Use Policy, 21(3), 193-198. doi: 10.1016/j.landusepol.2003.10.004