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一、人口老龄化的趋势在人类社会演变的历史过程中,人口的增减和人类对自然环境的适应能力的增减有相当直接的连带关系。人类对自然环境适应能力的增强,一方面生产了更多的粮食,提高人类生存的能力和机会,另一方面则改变了社会的结构,使其更适合人与人之间的协调和互助。自然灾害和战争常常是人口减少的两个主要原因,而工艺技术和社会结构的发展和调整可用来控制自然灾害和战争的发生。
I. The Trend of Population Aging In the historical process of the evolution of human society, the population increase and decrease have a fairly direct relationship with the increase or decrease of man’s ability to adapt to the natural environment. The enhancement of man’s ability to adapt to the natural environment, on the one hand, produces more food and improves the ability and opportunity of human existence, on the other hand, it changes the structure of society and makes it more suitable for the coordination and mutual assistance among people. Natural disasters and wars are often the two major causes of population decline and the development and adaptation of craftsmanship and social fabric can be used to control natural disasters and the onset of war.