ABSTRACT
This chapter provides a the methodological framework to delineate spatially integrated hierarchically nested agriculture regions in India. It examines the ontological basis of delineating regional boundaries of different agricultural systems, assesses the procedures and criteria required to delimit the agricultural regions to maximise differences in agriculture performance and identifies the way agricultural regions are structured and organised hierarchically in India. The root of regionalisation of human-environment interactions dates back to 1915 when Ellsworth Huntington developed a methodology for mapping the spatiality of human civilisation and habitation within the constraints imposed by the physical environment. Building of ontologies of agriculture regional systems should provide the solutions to two major methodological problems. Firstly, it should be able to tackle the scale problem that may arise due to Modified Area Unit Problem. Secondly, it should be able to integrate the characteristics of agricultural systems and sub-systems within the regional frame.
