System dynamics and structurization of the society based on resources nexus

Water, energy, food, labor, and land are connected directly and indirectly as a resources nexus in the socio-economic system, and an integrated resource management is needed for sustainable society to achieve carbon neutrality and sustainable development goals. Energy consumptions of the waste water treatment and purification of the contaminated water cause tradeoff between water and energy. On the other hand, reduction of the water consumption decreases energy consumption of the water allocation, then causes reduction of the carbon emission as synergy between water and energy. Solar sharing with energy production by photovoltaic power generation and food productions under the solar panels makes synergy between energy and food with higher land intensity. Resources intensities such as labor, water, and energy were used for classification of the society to be structured SDGs factors. This classification can be used for extending as bottom up to the national and global scales for sustainable society. To understand the socio-economic dynamics and structures of the society, two case studies have been conducting. The first one is in Kyoto, Japan, where is a historical city with tourism, and the second one is in Shimane, Japan, where is mostly rural area with higher potential of renewable energy. Best mixed policy will be delivered as the synergy of the resources nexus with socio-economic dynamic in each structured society.