LUPAS is a computerized decision support
system for strategic planning based on
interactive multiple-goal linear programming
(IMGLP) (De Wit et al., 1988). LUPAS
uses a set of tools for yield estimation, quantification
of input–output relations and optimization
of land use at the regional scale
under alternative sets of multiple objectives
and constraints (van Ittersum et al., 2004;
Roetter et al., 2005). LUPAS addresses the
questions ‘What would be possible?’ and
‘What has to be changed?’ It can be applied
for scenario analysis of complex problems
such as conflicts in land use (Hoanh et al.,
2000). The LUPAS methodology was developed
under the Systems Research Network
for Eco-regional Land Use Planning in
Tropical Asia (SysNet) project (1996–2000).
So, LUPAS meets our technological requirements
and has also been developed and
applied in Asia.