The Chinese Urban-rural Dual Economic Structure Model and Analysis

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.

Effects of the Development of Township Enterprises on the Urban-Rural Dual Economic Structure Based on Cointegration Theory

The gross output value of township enterprises(XGDP)is used as a variable of township enterprises development.And CXEY is a variable of urban-rural dual economic structure.According to the 1986-2006 Statistical Yearbook of Chinese Township Enterprises and the 2006 China Statistical Yearbook,effects of the development of township enterprises on the urban-rural dual economic structure are studied by the cointegration analysis.Result shows that without considering other influencing factors,township enterprise development in the years 1979-2005 is the key factor to improve the dual economic structure in urban and rural areas in China.

Study on Factors Influencing Urban-rural Dual Economic Structure of Chongqing Based on the State Space Variable Parameter Method

Firstly,this paper reviews and analyzes historic background of urban-rural integration of Chongqing,and the evolution and trend of urban and rural dual economic structure.On the basis of previous researches,it selects factors and variables influencing urban and rural dual economic structure,and establishes an econometric model.By state space Kalman filtering method,it analyzes dynamic influence of factors upon urban-rural dual economic intensity.According to empirical conclusion,it puts forward corresponding policy recommendations for promoting integrated urban and rural economic development of Chongqing.

Gap between Urban and Rural Economic Development in Less Developed Areas——A Case of Northern Jiangsu Area,China

Taking northern Jiangsu area as an example,economic disparity between urban and rural areas is described according to the data in 2000-2009 Jiangsu Statistical Yearbook.Result shows that there are significant differences in the rural and urban economic development in less developed areas,which are mainly reflected in the differences in per capita income,living standard,and Engel coefficient.Reasons for urban and rural economic disparity in less developed areas are analyzed.The asymmetry and immobility of rural and urban resources have objectively caused the income gap between urban and rural residents;urban industrial development,which is faster than agricultural development,has widened the income gap between urban and rural residents;and the differences in comparative labor productivity in rural and urban areas have enlarged their income gap.Countermeasures to minimize the urban and rural economic development gap are put forward,such as deepening the reform,realizing the free flow of economic resources between urban and rural areas,developing rural areas through urban development,exerting the function of urban areas in the coordinated development of urban and rural areas,paying attention to the agriculture and rural areas,and improving the comparative labor productivity of agriculture.

Influencing Factors for Formation of Urban and Rural Spatial Structure in Metropolis Fringe Area——Taking Shuangliu County of Chengdu in China as a Case

With rapid urbanization process, the pace of urban sprawl has been quickened and most metropolises have ex-perienced expansions in leaps and bounds in suburbanization, which has greatly changed the urban and rural spatial struc-ture of the metropolis fringe area. In this paper, Shuangliu County is taken as a case, since it is a typical fringe area of Chengdu Metropolis. Based on Landsat TM images of Chengdu City and Shuangliu County obtained in 1985, 2000 and 2004, characteristics of urban and rural spatial structure in Shuangliu County were analyzed, such as core-periphery spa-tial structure and some obvious integration trends. Then the influencing factors for the formation of urban and rural spatial structure were identified, including some natural, social, economic and political factors. According to the discussion of this paper, Shuangliu County is undergoing a key transition and reform period. Its formation of urban and rural spatial structure was affected not only by such common factors as the location, natural background, industrial transition, migra-tion, etc., but also by some unique factors such as city planning and policy guidance, which played an important role in accelerating its uneven spatial structure. The understanding of the role of the influencing factors would be useful for car-rying out spatial management and development planning of metropolis fringe area.

Mutual Conversion of Land Use between Urban and Rural Area in the Process of Urbanization: A Case Study of Shandong Province

Urbanization is one of the driving forces for the land use change in type and structure, and its prominent effect is to convert rural land to urban land. This paper takes Shan-dong Province as an example to analyze the current situation of the mutual conversion between the urban and rural areas from the aspects of the structure of land use, the decreasing tendency of the cultivated land, the changes of land use in urban and rural residential areas. It points out that cultivated land is converted to residential area land, industrial and/or mining area land. The relationship between the urban area land and the cultivated land is more direct; meanwhile, the changes of rural residential area lag behind obviously. The decrease of the cultivated land and the decline of soil quality will be the two difficult problems in the process of urbanization.

The Influence of the Urban-Rural Income Disparity on the Industrial Structure—Taking the Yangtze River Delta Region as an Example

In this paper, the effect of the mediation effect is mainly used to test and analyze the regression model, and most scholars have studied the impact of the modernization of the industrial structure on the income gap. However, this paper is from another perspective, based on the social background of high-quality development, the main study is the impact mechanism of urban and rural income gap on the industrial structure, taking the Yangtze River Delta as the main research object, and specifically selecting 22 central cities in the Yangtze River Delta region, which is also one of the highlights of this study. The regression model is constructed by using the intermediary effect, and the four intermediary variables of fiscal expenditure (M1), fixed asset investment (M2), number of patent applications (M3), and total import and export (M4) are selected, which represent the role of the government, fixed asset investment, scientific and technological level and opening-up level, and study and analyze the inherent influence mechanism between each variable. Before doing specific research, I consulted the papers and literature of many other outstanding scholars, among which Cheng Yuhong and Cheng Chi’s “The Influence Mechanism of industrial structure of urban and rural income gap” [1] has great reference value for this paper. According to the research results, under the background of high-quality development in the Yangtze River Delta region, the expansion of the income gap between urban and rural areas will inhibit the upgrading of the industrial structure, so it is necessary to focus on building a new type of urbanization, accelerating the construction of an urban innovation system, optimizing the rural employment structure to narrow the income gap between urban and rural areas, and providing impetus for the continuous upgrading of the industrial structure.

An Empirical Study of the Relationship between the Fixed Assets Investment and Urban-rural Income Gap during the Transition Period

As the gap in income between urban and rural residents bigger and bigger,based on the data from 1978 to 2007,this paper makes an empirical study of the dynamic relation between the fixed assets investment and the difference in income between urban and rural residents. The outcome from the study indicates a long-term balance exists between the investment rate of the fixed assets and the difference in income between urban and rural residents. A short-term deviation from the balance can be adjusted through long time. To a certain extent,city-oriented fixed assets investment policy is the main cause of the big gap in income between urban and rural residents. The big gap in income between urban and rural residents in turn reinforces their social status,thus further strengthening the city-oriented instead of countryside-oriented fixed assets investment policy. Based on that,this paper puts forward some suggestions on adjusting the fixed assets investment policy so as to shorten the difference in income between urban and rural residents and realize the goal of harmonious development between city and countryside.

Evolution Rules of Urban-rural Development and Inspiration for China's Agriculture

Based on urban-rural contrast coefficient,this article designs the agriculture relative development index(ARDI) as indicators measuring the intensity of urban-rural dual structure which is comparable among the countries of the world.This article calculates ARDI of 40 countries from 1980 to 2004.The result shows that ARDI in the developed countries and most of the middle-income countries are rising and yet there are declines in most of the low-income countries.The result also showed that most countries' ARDI will see a decline at the earlier stage of industrialization,so their dual economic structure will also aggravate and urban-rural gap will widen.With the economic development,the tendency will change and ARDI presents a U-shape change overall.The turning point is when a country becomes a middle-income one.

Development Path of Urban-rural Integration

The urban and rural areas are regarded as two major components of the regional economic system. Only through joint balanced development of the two can we achieve overall economic optimization and social welfare maximization. But the great social division of labor has separated urban areas from rural areas,which casts the shadow of city-oriented theory on cooperative relations between urban and rural areas. Mutual separation between urban and rural settlements and independent development trigger off a range of social problems. We must undertake guidance through rational development path of urban-rural integration,to eliminate the phenomenon of urban-rural dual structure,and promote the sustainable development of population,resources and environment in urban and rural areas as soon as possible.

Opportunities and challenges for development of urbanization in Western China

Urban and rural dual structure in Western China is obvious.The economic development of the central cities is relatively quick while that of the rural areas is lagging behind.The speeding up of urbanization contributes to the intensively uncoordinated development of urban and rural areas.Besides,the eco-fragile environment,shortage of available water resources,adverse geographic location,and relatively backward social economy restrict the development of urbanization in Western China.However,Western China also has the advantages of backwardness.This paper analyzes the present situation and development trend of urbanization in Western China.The results show that Western China has basically formed a development pattern with"industry promotes agriculture and urban leads to village".Therefore,combined with the present situation of Western China,this paper describes and analyzes the opportunities and challenges that may appear in the process of urbanization in Western China,puts forward the development pattern in which urban and rural areas can gain mutual support and co-development,and provides related recommendations.

乡村收缩的内涵界定与测度研究

乡村收缩是我国城乡结构转化进程中呈现的新现象。文章首先从概念层面阐释了乡村收缩的内涵,梳理了我国乡村收缩需要重点把握的逻辑线索,进而通过文献调查和实地调研,以甘肃省为例从县域尺度对乡村收缩程度进行测度,从乡村人口、经济和社会三个维度揭示其形成机理。研究发现:(1)乡村收缩在不同语境其内涵可能存在差异,但其本质均是青壮年劳动力的过度流失;(2)2000年、2010年、2020年甘肃省乡村收缩指数均值呈现动态大幅度上升趋势,分别为26.11%、38.97%、49.98%,且上升趋势具有比较显著的空间差异性;(3)城乡二元结构下,资源禀赋和地理区位、经济发展与要素流动、历史基础与社会文化、政策安排与治理能力都对乡村收缩有影响。新时代我国应从振兴县域经济出发,依靠产业聚集、人才引进、资金筹措、城乡融合的政策组合来回应乡村收缩现象。

海南省城乡冷链物流一体化发展现状与对策研究

大力推动城乡冷链物流一体化,是巩固和增强农村经济发展的重要手段之一,有利于打破城乡二元格局。本文以海南城乡冷链物流为研究对象,分析城乡冷链物流一体化必要性,通过实地调研海南省城乡冷链物流发展现状,发现存在冷链供应链尚未建立、城乡冷链资源分布不均、专业冷链物流人才匮乏、农村冷链信息化水平低、“最先一公里”冷链认知不足等问题,并针对存在的问题提出了相应对策,以期促进海南省城乡冷链物流一体化健康发展。

农村劳动力流动、经济增长对城乡二元结构的影响——基于动态面板与门槛效应模型的实证分析

城乡一体化发展是破解新时代社会主要矛盾的关键抓手。近年来,我国经济不断发展,农村劳动力流动规模不断扩大。但城乡二元结构并没有随着经济增长和劳动力流动而同步转化,存在着严重的滞后性。城乡二元结构成为掣肘经济持续发展的重要因素。文章基于2006—2020年我国31省份面板数据,运用系统动态面板模型(SYS-GMM)分析劳动力流动与经济增长对城乡二元结构的影响;运用门槛效应模型,以劳动力流动为门槛变量,分析经济增长对城乡二元结构的非线性影响。结果表明,劳动力流动促进城乡二元结构转化,而经济增长抑制城乡二元结构转化;经济增长对城乡二元结构的作用受到劳动力流动的影响,表现出门槛效应:当劳动力流动规模超过一定限度后,经济增长对城乡二元结构转化的抑制作用将得到缓解。

隋唐·安得广厦千万间--漫步地震五千年(9)

隋唐时期的史载地震主要在关中地区,显现了秦岭南侧存在一条北西向的石泉—房县活动断裂带。地震活动和房屋抗震一直是社会关注的大事,以蓟县独乐寺为典型代表,重点介绍了唐代木结构建筑的抗震技术:地基坚固和均匀、木结构的隔震机制、筒体结构的强抗震性能、斗拱构件的阻尼系统,都对后世的技术发展产生了深刻影响。在现代建筑方面,介绍了地震区划的基本原则,分析了农村藏式民居的弱点和改进措施,讨论了城市建筑的3种抗震结构及今后的发展方向。

数字创新创业赋能城乡共同富裕的实证检验

文章基于2012—2021年中国30个省份的面板数据,实证检验数字创新创业对城乡共同富裕的影响及作用机制。结果表明,数字创新创业对城乡共同富裕具有显著促进作用。异质性分析结果表明,相较于数字创新,数字创业对城乡共同富裕的促进效应更强;数字创新创业对城乡共同富裕的促进作用在西部、东北地区更加显著。作用机制检验结果表明,数字创新创业通过优化居民收入结构、提升技术创新能力,促进城乡共同富裕。因此,应激发乡村数字创新创业活力,促进城乡共同富裕;提升乡村企业技术创新水平,优化乡村居民收入结构;实施差异化发展策略,缩小城乡群体数字鸿沟。

从城乡二元到城乡融合发展——中国式现代化进程中的城乡关系发展

城乡实现融合发展的关键在于消除制度性、历史性因素所造成的区域、城乡资源配置被边缘化的问题,从而推进国民经济结构的转型升级,继而实现现代化。回顾我国发展进程发现:中国城乡关系是从分离、对立到融合,从非均衡向均衡发展转变的过程,此过程把握了中国式现代化道路的生成逻辑,实现了城乡融合发展的新境界,开辟了马克思主义现代化理论的新道路。现阶段,我国乡村振兴与新型城镇化融合发展仍存在体制机制不健全,城乡基本公共服务体系包容性较差,乡村基础设施建设分布不均衡,城乡空间结构关系不协调等问题。文章认为需要从物质、文化、制度等层面进行战略统筹,树立科学的城乡融合理念,不断完善乡村治理体制;发挥有效市场和有为政府的合力,推进城乡要素市场一体化;以数字科技赋能城乡产业,孕育更多有利于城乡融合发展的新型产业。

数字新质生产力对城乡高质量融合的影响与机制

数字新质生产力能够深刻改变城市与农村生产及生活方式,对城乡高质量融合具有重要意义。基于2009—2022年我国30个省份(未含香港地区、澳门地区、台湾地区及西藏地区)面板数据,利用固定效应模型、中介效应模型及门限效应模型,实证检验数字新质生产力对城乡高质量融合的影响和作用机制。研究发现,数字新质生产力能够显著促进城乡高质量融合、产业结构升级、公共服务均等化,特别是资源要素配置优化在数字新质生产力对城乡高质量融合的影响中起中介作用。数字新质生产力对城乡高质量融合的促进作用具有边际效应递增的非线性特征,产业结构升级、资源要素配置优化、公共服务均等化对这种非线性影响具有强化作用。数字新质生产力对城乡高质量融合的影响具有地区异质性,从线性影响看,在东部地区最强,在中部地区其次,在西部地区最弱;从非线性影响看,数字新质生产力的影响在东部和西部地区存在单一门限效应,在中部地区存在双重门限效应。为促进城乡高质量融合,应积极推动生产要素数字化转型,加快数字新质生产力形成;驱动产业结构升级,为城乡高质量融合提供动力;畅通资源要素流动渠道,优化资源要素配置;加强公共服务配套设施建设,助力公共服务均等化;结合地区特点,因地制宜培育数字新质生产力。