我国省级公共资本经济效应分析——基于面板VAR模型的实证分析

在现有文献研究的基础上,利用1999—2010年我国29个省(自治区、直辖市)的面板数据,基于内生增长理论构建计量经济模型,检验了公共资本存量、私人资本存量与经济增长之间的面板Granger因果关系。构建面板VAR模型度量公共资本存量对经济的冲击。结果表明:公共资本存量的冲击对人均私人资本存量和人均GDP都产生正向影响,但长期看该影响不具有持续效应。     

Public Investment Rules and Endogenous Growth with Empirical Evidence From Canada

This paper examines theoretically and empirically the effects of public investmentrules on output growth in an economy with private and public capital. It is shownthat the decisions on public capital formation are closely associated with the growthrate of output and generate endogenous growth. A permanent change in the policyrule implies a new long-run growth rate of output, but the economy will onlygradually approach the new steady-state due to adjustment costs in private capitalaccumulation. The model predictions are tested using data from Canada for theperiod 1955-1999. The data support the endogenous growth hypothesis and thetwo central assumptions of the model: (i) the growth rate of output follows closelythe rate of infrastructure formation and (ii) private capital formation also followsthe rate of infrastructure formation but adjusts with a delay.     

Is Public Capital Productive in China? Evidence from a Panel of Chinese Provinces

In addition to the direct productivity effect, public capital also has an indirect effect on private capital stock and labor input. This paper offers an evaluation of both the direct and indirect effects of Chinese public capital by applying a trans-log aggregate production function including public capital stock to a panel of regional data from 1986–2009. Moreover, we calculate the impact of public capital on regional total factor productivity (TFP) performance by introducing a system GMM estimation. The results show that the output elasticity of Chinese public capital stock is significantly positive, but decreasing year on year, and public capital is found to be a substitute for labor but complementary to private capital input. Finally, public capital has a significant positive effect on regional TFP performance.     

Another look at the linear q model: an empirical analysis of aggregate business capital spending with maintenance expenditures

Abstract .  The paper revisits the empirical investment literature, which has established that aggregate business fixed investment is not found to be related linearly to marginal or average Tobin's q . The theoretical background is extended here by developing a supply-side model where the depreciation rate of private capital is determined endogenously. The firm can either invest in 'new' capital, which adds directly to the existing capital stock at the presence of convex adjustment costs, or extend the durability of installed capital through maintenance expenditure, which affects its depreciation rate. The model shows that Tobin's q is then a positively related sufficient statistic for both components of aggregate capital expenditures. This central implication is tested empirically using aggregate time-series survey data from Canada on 'new' investment and maintenance expenditures covering the period 1956–93. The estimated relationships produce significant and plausible parameter estimates for the structural parameters of the q model.     

政府公共资本投资的长期经济增长效应

本文首先建立一个包含政府公共资本投资的两部门内生增长模型,并把公共资本投资分为政府物质资本投资和人力资本投资,从而对公共资本投资的长期经济增长效应进行理论分析。结论是,两种形式的公共资本投资对长期经济增长都可能具有正效应也可能具有负效应,取决于民间经济主体消费跨时替代弹性大小。其次,我们利用向量自回归分析框架,对我国1978—2004年间公共资本投资对长期经济增长的影响作实证分析。结论是,我国两种形式的公共资本投资与经济增长之间存在着长期均衡关系,其中政府公共物质资本投资对长期经济增长的正影响更为显著,而政府公共人力资本投资对长期经济增长的正影响较小,且在短期内不利于经济增长。这一结论对我国今后科学制定财政政策和选择公共投资领域都具有重要意义。     

EMPIRICAL IMPACT OF PUBLIC INFRASTRUCTURE ON THE JAPANESE ECONOMY*

We study the impact of public capital investment on individual sectors of the Japanese economy using time‐series data for the period of 1970–1998. We employ a production function approach and also estimate a dynamic VAR/ECM model. We find significant differences in the employment effects, output effects and private investment effects across sectors. Public capital investment has a positive effect on employment in the finance, insurance and real estate (FIRE), manufacturing, construction and utilities sectors; on private investment in the FIRE, agriculture, transportation, trade and services sectors; and on output in the mining, FIRE, trade and manufacturing sectors.     

中国的资本回报率有多高?-年份资本视角的宏观数据再估测

本文在从年份资本理论视角讨论投资、折旧和资本积累的基础上重估中国1993—2007年的资本回报率。结果显示,本文估测的税后名义资本回报率在8.0%到13.8%之间,税后实际资本回报率在6.9%到12.9%之间,明显低于现有结论。资本的异质性与年份效应导致高估折旧率、人为低估投资增长和资本存量,进而高估资本回报率。资本回报率的长期趋势由投资来源和增长扩张模式所决定,近年来资本回报率上升的主要原因是技术进步导致资本份额上升。高估资本回报率会误判要素价格政策的调整空间和效果,资本回报率水平不足以判断投资是否过度,中国的高投资驱动经济增长模式的可持续性值得深入讨论。     

China's Growing Government Debt in a Computable Overlapping Generations Model

This paper simulates the effects of China's growing government debt in a computable equilibrium model of overlapping generations. Our model assumes that the government increases debt to finance its spending in the short run, and then increases taxes or cuts spending to keep the debt–GDP ratio constant. The spending‐driven government debt increases public capital and output in the short run, but decreases private investment, total capital stock, output, and net exports in the long run, and makes the future generations worse off. Among various means of debt control, a decrease in government spending seems to be the least harmful to private investment, capital stock, and output while an increase in capital taxation is most detrimental.     

On the interaction between public and private capital in economic growth

This paper introduces two forms of interaction between private and public capital in an endogenous growth model in which productive government expenditure takes the form of a stock-variable and public capital is used in part as an input in the production of final output and in part to increase its own supply. While the first form of interaction involves the stocks of the two capital-goods and takes place within the final output sector through the specification of the aggregate production function (Cobb?CDouglas vs. CES), the second one concerns the rates of investment in the two kinds of capital. The share of productive public expenditure devoted to output production can be either exogenous or endogenous. Our results suggest that when this share is exogenous, along the balanced growth path the optimal growth rate of the economy is a positive function of the degree of complementarity between the two forms of investment. When the share of productive public expenditure devoted to output production is endogenous, the public capital share in GDP becomes, along with the model??s preference parameters, an important determinant of the economy??s long run growth. We also find that the optimal growth rate is an increasing function of the elasticity of substitution between public and private capital inputs in goods production, and is independent of the complementarity/substitutability between the two forms of investment.     

Public and private capital productivity in Russia: a non-parametric investigation

The productivity of public capital has been very popular research topic for US and other OECD countries, while studies using data from transitional countries are almost non-existent. In this paper, we analyze the productivity of public and private capital in Russia with parametric and non-parametric regression methods utilizing a unique regional level panel data from 2003 to 2007. More specifically, we assess public capital’s spillover effects, i.e., the productivity of public capital on private output, as well as the productivity of different capital ownership types on total output. We find that public capital has a clear positive effect on private output. However, our estimates and test statistics show that parametric methods are not able to grasp vast non-linearities and heterogeneity present among Russian regions, while the non-parametric approach can capture these important features of the data better. Furthermore, we find that multicollinearity is an important methodological problem which should be accounted for in analysis concerning capital data. Our results also suggest that the impact of public capital in Russia is heterogeneous in the sense that for some regions its contribution to private output is insignificant or even negative while it has a considerable positive role for most regions. Concerning the capital elasticities of total output, we find that public capital is less productive than private capital and roughly as productive as joint private-public capital.     

The impact of public capital on the US private economy: new evidence and analysis

This paper presents new evidence on the impact of public capital on the productivity of the US private sector. Using a production function approach, we estimate the impact of public investment on private capital productivity, specifically addressing the empirical critiques of earlier studies. We find evidence of a cointegrating relationship in a dynamic specification of an empirical model that includes public infrastructure as a factor of production, indicating the existence of a long‐run relationship between the US public capital stock and the productivity of the private capital stock. The results are used to explore how the decline in the growth rate of the public capital stock would have affected the performance of the private sector.     

An estimate of the capital stock for the Belgian industrial sector

The paper submitted for publication considers the conditions for and the construction of a capital stock series, consistent with all macroeconomic relations. A careful study of the literature has shown that most existing and widely used capital stock series do not meet that requirement. A generative method with a general model for the real sector is proposed. The choice of the parameters of this model was decided upon the general consistency with the main macroeconomic aggregates. The results are compared with existing series of capital stock. What was obtained was a capital stock series that gives non-diverging results for the macroeconomic series when using the capital stock in alternative specifications. The main conclusions on depreciation rate, capital stock, technological change, return on capital and share of capital are condensed in a set of tables and diagrams.     

Effects of Public Infrastructure on Cost Structure and Productivity in the Private Sector

This paper examines the effects of public infrastructure on the cost structure and productivity in the private sector in Australia. Translog cost functions incorporating public capital infrastructure are estimated for the aggregate private sector as well as for seven broad industry groups using annual time series data for 1968/69–1995/96. The effects of public infrastructure on productivity are measured in terms of both cost-saving and output-augmenting measures. The empirical results suggest that public infrastructure has a positive and significant impact on productivity in private sector industries. Public capital serves as a substitute for both private capital and labour. The rates of return to public capital are significant and vary over the sample period.     

Infrastructure investment and Canadian manufacturing productivity

This paper examines the relationship between Canadian public infrastructure and private output using a Constant Elasticity and Substitution-Translog (CES-TL) cost model to describe the interaction of the public and private sectors.

We find public capital a substitute for private capital within the Canadian manufacturing sector. Additionally, the services of public capital enhance the productivity of private capital. Canadian manufacturing costs are characterized by economies of scale, indicating that less than optimal plant sizes dominated Canadian manufacturing sector during the study period. Advances in disembodied technical progress are also indicated.     

Privatization and economic growth in Australia: the shorthand of a long process

The impact of privatization on economic growth has been little investigated relative to disaggregated approaches. A growth accounting framework is used here to investigate the impact of privatization on growth for the Australian economy. The contribution of public capital to the private sector and whether the growth process is endogenous or Solow is evaluated. Separate measures of public and private capital are computed in order to estimate their impacts with labour on Australian gross domestic product (GDP) growth for the period 1960 to 2003. A simple growth rates version is found preferred by stationarity and other tests. Labour growth appears to strongly positively influence the growth of GDP. In contrast, public capital growth has no statistically significant effect on GDP growth, or on private capital productivity. The data are consistent with the hypothesis that the coefficients of the growth equation are the same before and during privatization.     

China's Fiscal Decentralization and Regional Economic Growth

The present paper applies Lucas's theory of endogenous growth and Stiglitz's theory of local public goods to build an econometric model consisting of five simultaneous equations to study China's fiscal decentralization effects on regional economic growth. The model is estimated by two‐stage least squares using a set of panel data on 31 Chinese provinces during 1996–2005. The estimated results show that China's fiscal decentralization increased the local governments' expenditure on physical infrastructure and education, which led to the rising local physical capital stock and human capital levels, respectively, and then resulted in the growth of regional economies.     

What output-capital ratio to adopt for macroeconomic calibrations?

Regarding the output-capital ratio in heterodox macroeconomic simulation studies, a surprisingly wide range of numerical values can be found. The paper discusses quarterly US data that are publicly available where, in order to capture depreciation, the construction of the capital stock by the perpetual inventory method relies on detailed estimates of its lifetime. Subsequently the paper builds up a capital stock series by alternatively having recourse to the statistics about capital consumption and furthermore determining an initial level by an assumption about the long-term growth of capital. This procedure leads to somewhat different results. In addition, the rates of depreciation and profit are studied that are implied by the two approaches. The paper closes with two numerical proposals for the steady state values of these variables and the output-capital ratio that could be readily employed for macrodynamic modelling, and that are quite different from many of the aforementioned examples.     

ESTIMATION OF THE STOCK OF CAPITAL IN SPAIN

The paper presents the methodology and results of the estimation of the endowments of capital in the Spanish economy. It distinguishes between endowments of public capital and private capital. The series corresponding to the public sector cover the period 1955–97 and consider seven categories (or functions). The estimates are disaggregated by 17 regions and 50 provinces. The level of disaggregation is regional and provincial (NUTS2 and NUTS3 in European terminology). The private capital series cover the period 1964–97 and consider 17 sectors of production, with disaggregation at regional level. The information refers to two variables: gross formation of fixed capital (in current and constant pesetas) and capital stock in constant pesetas (base year 1990).     

经济增长模型中的公共资本*

关于公共资本与经济增长关系的理论研究在近二十年来取得了长足进步。本文提供了一个一般性分析框架,将公共资本与经济增长领域的众多研究成果统一在该框架中进行了系统梳理,从而清晰呈现了其理论发展脉络。首先,本文在基本模型中探究了该领域内学者普遍关心的核心问题,这些问题包括增长率最大化与社会福利最大化公共投资规则以及最优与均衡转移路径等。然后,通过逐个放宽基本模型的假设,本文考察了主要结论在扩展模型中是否依然成立。具体而言,本文分别在公共资本具有拥挤性而非纯公共产品性质,公共资本折旧率内生决定而非外生给定,公共投资同时以流量与存量形式而非仅以存量形式影响私人生产以及存在多级政府而非仅一级政府的假设下,对模型结论进行了检验。本文探讨了这些更反映现实的假定对结论产生的不同影响,并进而指出该领域所面临的挑战与未来可能的发展方向。