农业提供了更加可依赖的粮食来源，使人口增长；最终过多的人口迁移到新的土地。
Agriculture provided a more dependable source of food, causing populations to increase; eventually excess population migrated to new lands.
通过提高农民工子女的教育质量，这种人口迁移模式也有利于长期的生产率增长。
By improving the quality of education of children of migrants, such a migration pattern will also be good for long term productivity growth.
一些研究推测非洲经济增长的三分之一都归功于人口迁移。
Some studies reckon that demography explains as much as a third of Asia's economic growth.
人口迁移的经济增长模型解释了地区间经济增长差异的原因。
It suggests that the population migration economical growth mod - el could interpret regional economical growth differences.
但小城镇不仅承接了粗放的经济增长方式，而且小城镇分流了外迁农业人口，客观上推迟了人口迁移的城市化。
But small towns not only carry on the extensive economic development, and small towns split flow external migration of rural population, objectively delay the urbanization of population migration.
第三，以人口迁移为指标，基于内生人口迁移模型，对各省区省际人力资本迁移的增长效应进行了实证分析。
From the endogenesis population migration model, we also implement the empirical analysis of interprovincial human capital migration on economic growth effect.
本文推演了城市系统中在人口零增长假设条件下的人口迁移理论模型；
This paper deduces a theoretical population model in a urban system under a hypothetical condition of zero population growth (ZPG), and analyses the population dynamics for the model.
本文推演了城市系统中在人口零增长假设条件下的人口迁移理论模型；
This paper deduces a theoretical population model in a urban system under a hypothetical condition of zero population growth (ZPG), and analyses the population dynamics for the model.
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