The process of urbanization is a reshape of land use functions. Exploring the interaction mechanism between urbanization and production-living-ecological functions of land use (PLEFLU) is particularly important for promoting the synergy of human-land relationship with rapid urbanization. On the premise of constructing theoretical framework, entropy method, mechanical equilibrium model and curve estimation model are specifically considered. The results indicated that: (1) The comprehensive urbanization clearly showed characteristics of "Southern Jiangsu (SJ) > Central Jiangsu (CJ) > Northern Jiangsu (NJ)" from 1997 to 2018, and the dominant type of urbanization has gradually shifted from population urbanization to economic urbanization. (2) The deviation index of PLEFLU was between 0.0055 and 0.2101, and gradually showed the difference characteristics of "SJ >NJ". The dominant functions in SJ and NJ have changed from living function (LF) and ecological function (EF) to production function (PF) respectively. (3) There was an obvious positive correlation between urbanization and PLEFLU from multiple dimensions, and when the urbanization development levels in SJ and NJ reach 0.5038 and 0.2791 respectively, the PF becomes dominant. This research can provide a quantitative reference and policy decision basis for rationally regulating PLEFLU at different stages of urbanization.

Urbanization; Land use functions; Mechanical equilibrium model; Interaction mechanism; Jiangsu Province