Conclusion and Outlook

Abstract

IV is variable that reflect the increase of value, benefits, and utility of natural resources as a result of human activities. On the basis of LDR theory and a new discovery on economic development principles, the IV theory was developed along with the theoretical model, basic function, and curves to gain insight on the effect of human activities on natural resources. We also described our approaches and results of our estimation on resource conditions, technological advances, resource structures, and distribution optimization to ensure the applicability of our research findings in practice. A GIS-based computing tool has been developed for an automated calculation. Case studies on regional and urban scales have been conducted respectively on Henan province and Beijing.  IV theory offers a unique framework of theories and methodologies for the evaluation of natural resource use, thus ending the lack of generally acceptable theories and methodologies. It will have a profound effect on economic development theories from a more comprehensive and macroscopic standpoint, and will provide a better picture of resource use from time-spatial perspectives. However, more effort must to be made to further improve the IV theory system.