经济增长与环境质量:来自中国省际面板数据的证据

环境库兹涅茨曲线是经济增长与环境污染之间呈倒U型关系的曲线,即随着经济增长,环境质量先恶化,当经济发展到一定程度,环境质量又会逐渐改善。文章基于中国1991—2003年29个省级区域环境质量与人均GDP的数据,利用工业废水、废气、固体排放物等变量与人均GDP拟合方程验证环境库兹涅茨曲线假说。研究结果验证了环境库兹涅茨假说,人口密度和外商直接投资对不同的污染物有不同的影响,而工业发展对这三种污染物排放的影响比较大,因此加强产业结构的调整将有助于改善环境质量。     

Does S. Kuznets's belief question the Environmental Kuznets Curves?

Abstract.  This paper examines the link between pollution and income. The main purpose is to assess whether the introduction of income inequality in a Environmental Kuznets Curve (EKC) analysis can give new insights into the relationship between pollution and economic growth. The EKC hypothesis proposes that there is an inverted U‐shape relation between environmental degradation and income per capita. We question this common result, in a simple model where the income inequality evolution is exogenous and where the planner could use only one instrument. For a set of parameter values we find, for example, a two‐hump curve. JEL classification: D3, H4, Q2.     

Identification of technology shocks using misspecified VARs

Studies that evaluate the effects of technology shocks often employ structural VARs identified with long‐run restrictions. In the presence of a mismatch between the lag structures of the true data‐generating process and the adopted VAR, estimates based on long‐run restrictions can be biased. This paper offers a method that can reduce this bias substantially. Using artificial data, I assess the performance of the proposed method and find that it can outperform a range of alternative procedures. Applying the procedure to the US data, I find that per‐capita hours exhibit a positive hump‐shaped response profile in response to a technology shock.     

On the robustness of alternative rankings methodologies: Australian and New Zealand economics departments, 1988 to 2002

Theoretical considerations appear to support the conjecture that stock returns are positively related to growth in the long run. However, the empirical literature does not give unanimous support to the theory. Based on a stochastic general equilibrium model it is argued that the long-run relationship between stock returns and per capita income growth is ambiguous and depends on output volatility. Using a century of data for 20 Organization for Economic Co-operation and Development (OECD) countries it is shown that the relationship between stock returns and growth is positive over the period 1916–1951, in which output volatility was persistent. Outside this period no relationship between stock returns and growth is found. These findings are consistent with the predictions of the theoretical model.     

Inequality and economic growth: the role of initial income

We estimate a panel model where the relationship between inequality and GDP per capita growth depends on countries’ initial incomes. Estimates of the model show that the relationship between inequality and GDP per capita growth is significantly decreasing in countries’ initial incomes. Results from instrumental variables regressions show that in Low Income Countries transitional growth is boosted by greater income inequality. In High Income Countries inequality has a significant negative effect on transitional growth. For the median country in the world, that in the year 2015 had a PPP GDP per capita of around 10000USD, IV estimates predict that a 1 percentage point increase in the Gini coefficient decreases GDP per capita growth over a 5-year period by over 1 percentage point; the long-run effect on the level of GDP per capita is around ??5%.     

结构负利：流通业比重与地区经济增长*

作为国民经济中的基础性和先导性产业,流通业在国民经济中的比重呈现先下降后上升的U型演变趋势。本文利用扩展的索罗模型和中国省际地区面板数据探讨流通业比重变化对地区总体生产率和经济增长的影响。研究结果表明,首先,地区总体生产率与流通业比重呈显著的负相关关系。其次,地区人均产出增长率与当期流通业比重呈负相关关系,而与上期流通业比重呈正相关关系。流通业比重对地区人均产出增长率的净效应既受到地区总体生产率与流通业比重之间负向关系的影响,也受到地区经济增长收敛性的影响。根据模拟实验,2009-2014年中国流通业比重上升导致人均产出增长率约下降136个百分点。最后,地区流通效率在“流通业比重-总体生产率-经济增长”关系中发挥着明显的调节作用。在流通效率越高的地区,流通业比重上升对地区总体生产率和地区人均产出增长率的负向作用越弱。因此,地方政府可以通过提高本地区流通效率来缓解流通业比重上升带来的“结构负利”。     

Financial Development and Economic Growth: The Tunisian Experience

The aim of this paper is to investigate empirically the question of whether financial development leads to economic growth in a small, developing country like Tunisia. The paper focuses on the causal link between finance and economic growth in order to discriminate between several alternative theoretical hypotheses. The results suggest the existence of a stable long-run relationship between the development of the financial sector and the evolution of per capita real output that is consistent with the view that financial development can be an engine of growth in this country.     

Labor market search, sticky prices, and interest rate policies

What accounts for the significant real effects of monetary policy shocks? And what accounts for the persistent and hump shaped responses of output and inflation in response to such shocks? These questions are investigated in a model that incorporates labor market search, habit persistence, sticky prices, and policy inertia. While habit persistence and price stickiness are important for the hump shaped output response and the long, drawn out inflation response, respectively, labor market frictions increase the output response and reduce the inflation response relative to an otherwise similar model based on a Walrasian labor market. Significantly, policy inertia itself is found to be the most important factor in accounting for the magnitude of the output effects of policy shocks in the model.     

Ramsey discounting calls for subtracting climate damages from economic growth rates

The Ramsey equation ties the utility discount rate and the elasticity of marginal utility of consumption together with per capita consumption growth rates to calculate consumption discount rates. For many applications, per capita consumption growth rates can be approximated with per capita output growth rates. That approximation does not work for climate change, which drives an ever-increasing and increasingly uncertain wedge between output and consumption growth. NAS (2017), in a central recommendation and illustrative example, conflates the two. The correct, consumption-based discounting method generally decreases consumption discount rates and, thus, increases the resulting Social Cost of Carbon Dioxide (SC-CO₂).     

Trend productivity growth and the government spending multiplier

The paper analyzes the effects of government spending shocks under alternative rates of trend growth in a New-Keynesian model characterized by price and wage rigidity. We show that the presence of trend growth makes the impact on output and consumption of government spending shocks smaller but more persistent with a hump shaped impulse response. Our results imply that the impact government spending multiplier decreases while the cumulative multiplier increases with trend growth.     

Like Father,Like Son: Inheriting and Bequeathing

This paper incorporates indirect reciprocal behavior in the context of bequeathing decisions into an otherwise standard OLG model. We provide conditions for the existence of a unique steady state with operative bequests. Contrary to standard OLG models, we show that taking into account such behavioral interactions allows one to rationalize both an increasing and U‐shaped pattern of the inheritance to GDP ratio over time, consistent with recent empirical evidence. Moreover, the model predicts a nonlinear (U‐shaped) relationship between the size of an unfunded social security program and the long‐run stock of per capita capital, which in turn provides a novel explanation of the inconclusive empirical findings on the relationship between social security, savings and long‐run growth. Ricardian equivalence is shown to hold in a special case of the model     

资源型城市经济增长——资源的“诅咒”还是距离的“暴政”

从资源依赖视角来看,在非资源型城市资源依赖与人均GDP增长率正相关;在资源型城市资源依赖与人均GDP的增长率负相关。从各城市的地理位置来看,中部地区城市和西部地区城市资源依赖与人均GDP的增长率之间呈现倒U型关系。但是,东部地区城市资源依赖与人均GDP的增长率之间呈现J型关系,"资源诅咒"在东部地区城市中并没有出现。     

Information Technology and the World Economy*

This paper addresses the impact of investment in information technology (IT) on the recent resurgence of world economic growth. We describe the growth of the world economy, seven regions and 14 major economies during the period 1989–2003. We allocate the growth of world output between input growth and productivity and find, surprisingly, that input growth greatly predominates! The contributions of IT investment have increased in all regions, but especially in industrialized economies and Developing Asia. Differences in per capita output are explained by differences in per capita input, rather than by variations in productivity.     

TAXES AND GROWTH: TESTING THE NEOCLASSICAL AND ENDOGENOUS GROWTH MODELS

Changes in the tax rate alter real growth permanently in an endogenous growth model, but only temporarily in a neoclassical model, where the only permanent effect is a decrease in the steady-state level of output per capita. Using data from the 1960'1992 period for a panel of 11 Organization of Economic Cooperation and Development economies, this paper's empirical results support the following conclusions. First, consistent with the tax smoothing hypothesis, tax rates have exhibited significant persistent changes while output growth rates have not. Second, a higher tax rate permanently reduces the level of output but has no permanent effects on the output growth rate. These findings are inconsistent with endogenous growth mechanisms and suggest that the relationship between output and the tax rate is best described by the neoclassical growth model. (JEL E62, 041)     

我国工业增长模式及其转型机制研究——基于23个省份1998-2007年工业的实证研究

文章以我国23个省份1998-2007年工业为研究对象,采用环境和能源约束下的前沿生产模型分析了我国工业增长模式及转型机制,结果表明:(1)省级人均产出的增长差异导致区域工业产出水平差距扩大,并使省级人均产出分布函数由1998年的单峰分布演进为2007年的双峰分布。相比于1998年,省级人均产出变异系数由0.3356上升至0.3487,技术效率变异系数由0.2961下降至0.2862。(2)13个省份技术进步对产出增长的贡献最大,9个省份要素投入深化对产出增长的贡献最大。(3)资本投入和能源消耗显著促进了产出增长,而二氧化硫排放显著阻碍了产出增长。资本投入、能源消耗和二氧化硫排放均显著阻碍了技术效率水平的提高。资本投入、能源消耗和二氧化硫排放均对要素投入深化效应有显著正向影响。     

Information Technology and the World Growth Resurgence

Abstract. This paper analyzes the impact of investment in information technology (IT) on the recent resurgence of world economic growth. We describe the growth of the world economy, seven regions, and 14 major economies during the period 1989–2004. We allocate the growth of world output between input growth and productivity and find, surprisingly, that input growth greatly predominates! Moreover, differences in per capita output levels are explained by differences in per capita input, rather than variations in productivity. The contributions of IT investment have increased in all regions, but especially in industrialized economies and Developing Asia.     

中国贸易发展与经济增长影响机制的经验研究

本文对贸易和人均产出之间的影响机制进行了分析。中国改革开放以来的经验数据证实 ,国际贸易通过提升国家要素禀赋结构和加快制度变革进程对人均产出产生了正面影响 ;但国内贸易则相反 ,国内市场分割的加剧 ,阻碍了国内市场的一体化进程 ,进而对经济产生负面影响。另外 ,本文还发现 ,尽管人力资本对人均产出有着重要而显著的影响 ,但贸易的变化却较少通过这条途径对人均产出产生影响。     

Skill Composition,Fertility, and Economic Growth

While high fertility persists in the poorest countries and fertility declines with per capita income in developing countries, fertility and per capita income are now positively associated across most developed countries. This paper presents a model where a U‐shaped relationship between overall fertility and per capita income reflects within country differences in workforce skill composition and household choice of occupation, fertility, and childrearing. The fraction of skilled workers rises with economic growth. By allowing for both differences in the fertility of skilled and unskilled workers and purchased childrearing inputs, we explain a poverty trap with high fertility, fertility decline with economic development, and the possible reversal of fertility decline in a developed economy where most workers are skilled.     

Monetary and fiscal policies in a heterogeneous‐agent economy

We study the effects of long‐run inflation and income taxation in an economy where households face uninsurable idiosyncratic risks. We construct a tractable competitive‐search framework that generates dispersion of prices, income and wealth. We analytically characterize the stationary equilibrium and the policy effects on individual choices. Quantitative analysis finds that monetary and fiscal policies have distinct effects on macro aggregates, such as output, savings and wealth, income and consumption inequalities. There is a hump‐shaped relationship between welfare and the respective policies. Overall, welfare is maximized by a deviation from the Friedman rule, paired with distortionary income taxation.     

Spatial Dependence and Divergence across Chinese Cities

This paper analyzes the evolution of urban output per capita across Chinese cities in post‐reform era. Our results suggest no evidence of output convergence across cities from 1984 to 2003. We find that cities with comparable output per capita are likely to be located in the same region; furthermore, cities tend to mirror the mobility of their counterparts located in the same province, but not the same region. The divergence in urban output per capita across the nation will continue if the current economic growth pattern persists in the future.