Abstract
The total population of our country is gradually decreasing from two years before. A strategy of tourism is indispensable for building a social system which should be adapted to a decline in population. From the viewpoint of maintaining national power in the population-declining society, we must turn our attention to the tourism industry. Expansion of tourism-based population interchange will lead to the creation of new local demands and, as its synergetic effect brought about by the economic ripple effect, may help avoid the decrease in economic strength and national power. This century is literally the age of global interchange. It means the formation of ”an interchange society” based on the movement of goods, people and capital, accompanied by cultural exchanges. Eight areas composing the comprehensive national strength (human resources, natural environment, technology, economy and industry, government, national defense, culture, society) are deeply related to the strategy of tourism. I would like to point out that the improvement of labor productivity in the tourism industry is especially an important factor necessary for the successful implementation of the strategy.
https://ror.org/00x3gtf37 
