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“单独两孩”政策甫一启动,从北京到广东,各地纷纷酝酿落实。这既涉及国家发展的人口战略,也涉及亿万人民的切身利益,新时期我国这一生育政策的重大调整完善,受到广泛关注。 相似文献
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The measurement of urban population carrying capacity is the basis for cities' sustainable development. However, the traditional study on population carrying capacity which was based on food supply is not applicable to the single urban area. This paper built a model for the analysis of urban carrying capacity, and took Haidian District in Beijing as an example to calculate the urban carrying capacity of Haidian District in the future, which was the basis for the improvement of the population carrying capacity. This study would also provide a reference to the measurement of the urban population carrying capacity for other cities and districts in China. 相似文献
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这是我们25年来第一次全家坐飞机外出旅游,在这之前,我们也有过两次全家出行,但都不是坐飞机。第一次是在1991年8月,借着参加美国人口学会年会的机会全家出来游玩,那时小女儿叶菁还在她母亲的肚子里,已经有6个多月了,我们开着在盐湖城购买的价值才 相似文献
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