Under the CES production technology, an improved Cass Coopmans model with solvable endogenous fertility is given. We prove that there are multiple growth paths and multiple steady states when CES 0<σ<1 ...Under the CES production technology, an improved Cass Coopmans model with solvable endogenous fertility is given. We prove that there are multiple growth paths and multiple steady states when CES 0<σ<1 and the technology level is high enough; the growth path and the steady state is unique when σ>1 and the ratio of capital is smaller than a constant. So, the dynamic system which describes the model undergoes a bifurcation when σ=1 . We discuss the economic sense of the main results we give.展开更多
Based on the characteristics of urban-rural dual economic structure in China,we build a dynamic endogenous urban-rural dual economic model closely linked to China's reality,and carry out mathematical economics ana...Based on the characteristics of urban-rural dual economic structure in China,we build a dynamic endogenous urban-rural dual economic model closely linked to China's reality,and carry out mathematical economics analysis of optimized conditions for urban and rural sectors. The main results show that:(i) The labor growth rate of urban-rural sectors must be greater than the time discount rate,or else there would be a vicious cycle of diminishing returns in the sectors;(ii) The accumulation rate of physical capital and human capital of urban-rural sectors,and the rate of technological progress,need to be greater than the corresponding depreciation rate plus the time discount rate,otherwise there would be a vicious cycle of diminishing returns in the sectors;(iii) The low accumulation rate in the rural sector,and the occurrence of labor outflow,human capital loss and lack of investment,will expand income gap between urban and rural areas,which is a reason for solidification of urban-rural dual economic structure.展开更多
In this paper, ecological footprint methods were used to calculate the ecological footprint of six cities （Nanchang, Jingdezhen, Jiujiang, Xinyu, Yingtan and Fuzhou） in the Poyang Lake Area, Jiangxi, China from 1991...In this paper, ecological footprint methods were used to calculate the ecological footprint of six cities （Nanchang, Jingdezhen, Jiujiang, Xinyu, Yingtan and Fuzhou） in the Poyang Lake Area, Jiangxi, China from 1991 to 2010. Ecological footprint was the input factor for ecological resources and the contribution of this and other factors such as labor and capital to economic growth were analyzed. The results showed that, from 1991 to 2010, ecological footprints in the six cities increased year by year. The amount of land for fossil energy, under cultivation and grassland influenced total ecological footprint in each city. The contribution of ecological resources, labor factors and capital factors to economic growth showed regional differences. Nanchang, Jiujiang, Xinyu, and Yingtan are capital-orientated and capital factor had a great influence on the economic growth rates, whereas, Jingdezhen and Fuzhou were labor-orientated. The contribution of ecological resources to economic growth in the six cities was the lowest of all three factors, meaning that efficiency of ecological resource utilization is low. Total productivity plays a key role in economic development; however, the overall level of total factor productivity for the six cities was low and indicates that the technological content of Poyang Lake Area’s economic growth is low and the utilization of input factors extensive. In summary, we suggest changing the mode of economic growth and developing tertiary industry in the region.展开更多
大规模人口从中西部向东部发达地区流动必将对区域经济产生重要影响。人口流动是否促进区域经济增长,区域经济增长是发散还是收敛对促进区域经济协调发展具有重要的现实意义。本文从人均产出出发,以Barro and Sala-i-Martin国际人口迁...大规模人口从中西部向东部发达地区流动必将对区域经济产生重要影响。人口流动是否促进区域经济增长,区域经济增长是发散还是收敛对促进区域经济协调发展具有重要的现实意义。本文从人均产出出发,以Barro and Sala-i-Martin国际人口迁移模型为理论基础,用数理分析方法推演出携带人力资本的人口流动新古典内生经济增长收敛机制。在稳态邻域内,发达地区经济增长收敛速度加快,同时欠发达地区经济增长收敛速度减慢,最终导致区域经济相对发散。随后,本文借鉴DR模型建立动态面板数据模型,该模型既能预测内生经济增长发散性,又可以预测新古典经济增长收敛性。通过利用2005—2014年中国29个省份面板数据,采用系统GMM方法对区域经济增长收敛性进行实证检验。实证结果显示:1人口流动促进了区域经济增长;2以2008年为时间节点,西部大开发政策的实施加速了西部地区经济增长;3中国区域经济具有新古典经济增长收敛机制和内生经济增长收敛机制。这意味着理论模型和实证检验相矛盾,从而产生"人口流动-经济增长收敛谜题"。"收敛谜题"产生的原因可能有政策效应、追赶效应、人力资本效应、收入转移效应和干中学效应。"收敛谜题"告诉我们,要使区域经济协调发展,从根本上解决区域差距扩大的矛盾,发挥新古典经济收敛机制和内生经济收敛机制的作用,就必须提高国民整体人力资本水平、解决好就业市场体制问题和流动人口福利待遇问题。展开更多
文摘Under the CES production technology, an improved Cass Coopmans model with solvable endogenous fertility is given. We prove that there are multiple growth paths and multiple steady states when CES 0<σ<1 and the technology level is high enough; the growth path and the steady state is unique when σ>1 and the ratio of capital is smaller than a constant. So, the dynamic system which describes the model undergoes a bifurcation when σ=1 . We discuss the economic sense of the main results we give.
基金Supported by Chongqing Social Science Planning Project(2010YBJJ13)the Fundamental Research Funds for the Central Universities(XDJK2010C103)+1 种基金Humanities and Social Sciences Youth Project,the Ministry of Education(10YJC630205)Chongqing Key Humanities and Social Sciences Project(SWU 0810026)
文摘Based on the characteristics of urban-rural dual economic structure in China,we build a dynamic endogenous urban-rural dual economic model closely linked to China's reality,and carry out mathematical economics analysis of optimized conditions for urban and rural sectors. The main results show that:(i) The labor growth rate of urban-rural sectors must be greater than the time discount rate,or else there would be a vicious cycle of diminishing returns in the sectors;(ii) The accumulation rate of physical capital and human capital of urban-rural sectors,and the rate of technological progress,need to be greater than the corresponding depreciation rate plus the time discount rate,otherwise there would be a vicious cycle of diminishing returns in the sectors;(iii) The low accumulation rate in the rural sector,and the occurrence of labor outflow,human capital loss and lack of investment,will expand income gap between urban and rural areas,which is a reason for solidification of urban-rural dual economic structure.
基金the National Natural Science Foundation of China (No.71063015 and No.71263039)Jiangxi Province’s Social Sciences "11thFive-Year Plan" project (No.10YJ61)Science and Technology Project of the Education Department of Jiangxi Province (No.GJJ11271)
文摘In this paper, ecological footprint methods were used to calculate the ecological footprint of six cities （Nanchang, Jingdezhen, Jiujiang, Xinyu, Yingtan and Fuzhou） in the Poyang Lake Area, Jiangxi, China from 1991 to 2010. Ecological footprint was the input factor for ecological resources and the contribution of this and other factors such as labor and capital to economic growth were analyzed. The results showed that, from 1991 to 2010, ecological footprints in the six cities increased year by year. The amount of land for fossil energy, under cultivation and grassland influenced total ecological footprint in each city. The contribution of ecological resources, labor factors and capital factors to economic growth showed regional differences. Nanchang, Jiujiang, Xinyu, and Yingtan are capital-orientated and capital factor had a great influence on the economic growth rates, whereas, Jingdezhen and Fuzhou were labor-orientated. The contribution of ecological resources to economic growth in the six cities was the lowest of all three factors, meaning that efficiency of ecological resource utilization is low. Total productivity plays a key role in economic development; however, the overall level of total factor productivity for the six cities was low and indicates that the technological content of Poyang Lake Area’s economic growth is low and the utilization of input factors extensive. In summary, we suggest changing the mode of economic growth and developing tertiary industry in the region.
文摘大规模人口从中西部向东部发达地区流动必将对区域经济产生重要影响。人口流动是否促进区域经济增长,区域经济增长是发散还是收敛对促进区域经济协调发展具有重要的现实意义。本文从人均产出出发,以Barro and Sala-i-Martin国际人口迁移模型为理论基础,用数理分析方法推演出携带人力资本的人口流动新古典内生经济增长收敛机制。在稳态邻域内,发达地区经济增长收敛速度加快,同时欠发达地区经济增长收敛速度减慢,最终导致区域经济相对发散。随后,本文借鉴DR模型建立动态面板数据模型,该模型既能预测内生经济增长发散性,又可以预测新古典经济增长收敛性。通过利用2005—2014年中国29个省份面板数据,采用系统GMM方法对区域经济增长收敛性进行实证检验。实证结果显示:1人口流动促进了区域经济增长;2以2008年为时间节点,西部大开发政策的实施加速了西部地区经济增长;3中国区域经济具有新古典经济增长收敛机制和内生经济增长收敛机制。这意味着理论模型和实证检验相矛盾,从而产生"人口流动-经济增长收敛谜题"。"收敛谜题"产生的原因可能有政策效应、追赶效应、人力资本效应、收入转移效应和干中学效应。"收敛谜题"告诉我们,要使区域经济协调发展,从根本上解决区域差距扩大的矛盾,发挥新古典经济收敛机制和内生经济收敛机制的作用,就必须提高国民整体人力资本水平、解决好就业市场体制问题和流动人口福利待遇问题。
