[1] Univ Putra Malaysia, INTROP, Serdang, Malaysia
[2] AgroParisTech, ABIES Doctoral Sch, Paris, France
[3] CIRAD Dept Environm & Soc, UR Forests & Soc, Montpellier, France
[4] CIRAD, Jakarta, Indonesia
[5] Univ Putra Malaysia, Sch Business & Econ, Serdang, Malaysia
[6] Univ East Anglia, Sch Int Dev, Norwich, England