根据1956年联合国《人口老龄化及其社会经济后果》确定的划分标准,当一个国家或地区65岁及以上老年人口数量占总人口比例超过7%时,则意味着这个国家或地区进入老龄化。1982年维也纳老龄问题世界大会,确定60岁及以上老年人口占总人口比例超过10%,意味着这个国家或地区进入老龄化。北京作为快速发展的现代化大都市,在2000年已经步入老龄化,当年全国第五次人口普查显示,北京全市60岁以上人口占比已达到12.5%,65岁以上人口占比超过 According to the division criteria set by the United Nations “Population Aging and Its Social and Economic Consequences” in 1956, when the proportion of the elderly population aged 65 and over in a country or region accounts for more than 7% of the total population, this means that the country or region is entering an aging population . The 1982 World Assembly on Aging in Vienna determined that the proportion of elderly people aged 60 and over in the total population of over 10% means that this country or region is aging. Beijing, as a rapidly developing modern metropolis, has entered the age-old population in 2000. The fifth national census in that year showed that the proportion of the population over the age of 60 in Beijing reached 12.5%, and the population over the age of 65 exceeded