Irrigation Intensification or Extensification Assessment:A GIS-Based Spatial Fuzzy Multi-Criteria Evaluation

摘要

This paper presents some preliminary results from a research on spatial multi-criteria evaluation of land suitability for intensification or extensification in irrigated cropland at a catchment scale in Australia.The project was conducted using the fuzzy linguistic ordered weighted averaging (FLOWA) approach which integrates AHP and fuzzy linguistic OWA operators in ArcGIS 9.2 environment.Several scenarios werederived to show how the uncertainties involved in the suitability decision-making process will influence the outcomes.The study has indicated that there is no need for irrigation extensification in the catchment;there is a good potential of intensifying irrigation in some areas if water is available.