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經(jīng)濟(jì)周期性波動(dòng)影響長(zhǎng)期增長(zhǎng)的門檻效應(yīng):假設(shè)與實(shí)證

2014-11-10 17:19:54趙峰
西部金融 2014年9期

趙峰

摘 要:本文基于改革開放以來(lái)全國(guó)加總時(shí)序數(shù)據(jù)和分地區(qū)、分行業(yè)面板數(shù)據(jù),在考慮到處于不同波動(dòng)狀態(tài)的經(jīng)濟(jì)周期性波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)可能存在非線性影響的假設(shè)下,運(yùn)用門檻回歸模型,研究了我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響。研究結(jié)果表明:我國(guó)經(jīng)濟(jì)周期性波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響存在波動(dòng)門檻效應(yīng);在低波動(dòng)時(shí)期,經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響有減損效應(yīng),但不同工業(yè)行業(yè)的表現(xiàn)各異,競(jìng)爭(zhēng)性行業(yè)對(duì)增長(zhǎng)有負(fù)影響,壟斷性行業(yè)則有正影響;在高波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)的影響正向不顯著。

關(guān)鍵詞:經(jīng)濟(jì)周期;長(zhǎng)期增長(zhǎng);門檻效應(yīng);面板數(shù)據(jù)

中圖分類號(hào):F830.31 文獻(xiàn)標(biāo)識(shí)碼:B 文章編號(hào):1674-0017-2014(9)-0025-05

一、引言

經(jīng)濟(jì)周期性波動(dòng)與經(jīng)濟(jì)的長(zhǎng)期趨勢(shì)增長(zhǎng)之間的關(guān)系一直是一個(gè)重要的學(xué)術(shù)問題,波動(dòng)對(duì)增長(zhǎng)的影響結(jié)論對(duì)于政府部門如何看待宏觀經(jīng)濟(jì)波動(dòng)以及由此制定相應(yīng)的調(diào)控政策具有重要意義。近年來(lái),世界整體經(jīng)濟(jì)波動(dòng)加劇,對(duì)此,各國(guó)政府采取了積極的應(yīng)對(duì)措施,例如增加政府投資,調(diào)整貨幣政策。但是,經(jīng)濟(jì)的周期性波動(dòng)一定會(huì)減損經(jīng)濟(jì)的增長(zhǎng)嗎?從相關(guān)的研究成果看,部分理論(如隨機(jī)增長(zhǎng)模型)認(rèn)為波動(dòng)會(huì)增加經(jīng)濟(jì)行為結(jié)果的不確定性,由此導(dǎo)致投資和消費(fèi)減少,最終減損經(jīng)濟(jì)增長(zhǎng)。然而,根據(jù)新經(jīng)濟(jì)增長(zhǎng)理論,經(jīng)濟(jì)波動(dòng)特別是經(jīng)濟(jì)衰退時(shí),經(jīng)濟(jì)系統(tǒng)會(huì)形成一種內(nèi)在機(jī)制來(lái)摧毀引起危機(jī)發(fā)生的不合理體制和阻礙生產(chǎn)率增長(zhǎng)的落后技術(shù),通過(guò)調(diào)整產(chǎn)業(yè)結(jié)構(gòu)來(lái)改善經(jīng)濟(jì)效率從而促進(jìn)經(jīng)濟(jì)長(zhǎng)期增長(zhǎng)。時(shí)至今日,金融危機(jī)的陰霾并未徹底消去,經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)到底存在負(fù)面影響還是正面影響?迄今為止,無(wú)論是理論研究還是實(shí)證研究都沒有形成統(tǒng)一結(jié)論。

在經(jīng)濟(jì)波動(dòng)與經(jīng)濟(jì)增長(zhǎng)的實(shí)證研究方面,Ramey & Ramey(1995)運(yùn)用國(guó)家層面的數(shù)據(jù)進(jìn)行了研究,得出了經(jīng)濟(jì)波動(dòng)會(huì)對(duì)經(jīng)濟(jì)增長(zhǎng)產(chǎn)生負(fù)面影響的結(jié)論。近年來(lái),部分學(xué)者提出了關(guān)于經(jīng)濟(jì)波動(dòng)與經(jīng)濟(jì)增長(zhǎng)關(guān)系的新見解,主要集中于三個(gè)方面:一是考慮波動(dòng)性質(zhì),如Blackburn & Pelloni(2004)發(fā)現(xiàn)長(zhǎng)期增長(zhǎng)與實(shí)際沖擊引起的波動(dòng)呈正相關(guān),而與名義沖擊引起的波動(dòng)呈負(fù)相關(guān)。Buch & Dopke(2009)發(fā)現(xiàn)企業(yè)總體波動(dòng)和剔除宏觀和行業(yè)因素后的特質(zhì)波動(dòng)對(duì)企業(yè)增長(zhǎng)均有正向影響;二是考慮了數(shù)據(jù)類型,一些學(xué)者從使用加總數(shù)據(jù)轉(zhuǎn)向使用分解數(shù)據(jù)進(jìn)行研究,如Ezcurra(2010)發(fā)現(xiàn)盡管基于整體加總數(shù)據(jù)得到的波動(dòng)與增長(zhǎng)關(guān)系為負(fù),但基于行業(yè)分解數(shù)據(jù)得到的二者關(guān)系卻顯著為正;三是通過(guò)考察不同經(jīng)濟(jì)體制特征來(lái)研究波動(dòng)與增長(zhǎng)的關(guān)系,如Buch & Dopke(2007)從宏觀和微觀角度發(fā)現(xiàn)短期波動(dòng)與長(zhǎng)期增長(zhǎng)的關(guān)系受金融(信貸)市場(chǎng)的影響,金融市場(chǎng)的發(fā)達(dá)程度會(huì)使得波動(dòng)對(duì)增長(zhǎng)的影響不同。

理論上對(duì)我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)長(zhǎng)期經(jīng)濟(jì)增長(zhǎng)影響的研究還比較少,更多的學(xué)者從實(shí)證角度進(jìn)行了分析。李永友(2006)認(rèn)為中國(guó)的對(duì)外開放及市場(chǎng)化改革在提高經(jīng)濟(jì)長(zhǎng)期增長(zhǎng)程度的同時(shí)降低了增長(zhǎng)波動(dòng)的風(fēng)險(xiǎn);杜兩省等(2011)對(duì)波動(dòng)與增長(zhǎng)的關(guān)系進(jìn)行穩(wěn)健性檢驗(yàn)后認(rèn)為兩者之間顯著負(fù)相關(guān);盧二坡,呂介民(2012)通過(guò)改進(jìn)的GARCH-M模型實(shí)證了中國(guó)經(jīng)濟(jì)短期波動(dòng)與長(zhǎng)期增長(zhǎng)的關(guān)系,認(rèn)為不同經(jīng)濟(jì)周期階段影響著兩者關(guān)系;李娟偉,任保平(2013)使用30年的數(shù)據(jù)進(jìn)行回歸檢驗(yàn)后,認(rèn)為經(jīng)濟(jì)增長(zhǎng)質(zhì)量的變化受國(guó)際收支失衡的影響。但是,這些研究都將樣本期間整體考慮,而未分波動(dòng)的不同階段進(jìn)行觀察,而經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響可能與波動(dòng)的狀態(tài)有關(guān)。此前有學(xué)者認(rèn)為在20世紀(jì)90年代中期以后我國(guó)經(jīng)濟(jì)波動(dòng)出現(xiàn)了平緩特征,從而以1995或1996年為界限進(jìn)行階段劃分,并分階段考察二者的關(guān)系,但是這樣的劃分是較粗糙的,2008年金融危機(jī)帶來(lái)的高經(jīng)濟(jì)波動(dòng)也表明這種劃分方法不再合適。鑒于此,本文主要采用門檻回歸模型判斷我國(guó)經(jīng)濟(jì)周期性波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響是否存在波動(dòng)門檻效應(yīng),并分析在不同波動(dòng)階段對(duì)經(jīng)濟(jì)增長(zhǎng)有何影響。而且,本文在實(shí)證分析方面使用了我國(guó)工業(yè)分行業(yè)面板數(shù)據(jù)。

二、研究模型的構(gòu)建

(一)模型和估計(jì)方法

考慮到主要從實(shí)證分析的角度研究我國(guó)經(jīng)濟(jì)周期性波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)的影響,為此本文構(gòu)建如下計(jì)量模型:

rate■=∑■■ρ■×rate■+β×νol■+c (1)

其中rate■是第t期的經(jīng)濟(jì)增長(zhǎng)率,rate■是第t-j期的經(jīng)濟(jì)增長(zhǎng)率,νol■是波動(dòng),β是波動(dòng)變量系數(shù),表明波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)的影響。當(dāng)考慮分地區(qū)或分行業(yè)的數(shù)據(jù)時(shí),可以采用面板數(shù)據(jù)模型:

rate■=∑■■ρ■×rate■+β×νol■+u■+ν■+c (2)

式(2)中,rate■是第i個(gè)地區(qū)(或行業(yè))t期的經(jīng)濟(jì)增長(zhǎng)率,其中,i=1,∧,N,t=1,∧,T。u■表示固定效應(yīng),ν■表示時(shí)期效應(yīng)。為進(jìn)一步驗(yàn)證我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)可能存在非線性影響的假設(shè),在模型(1)的基礎(chǔ)上建立門檻回歸模型:

rate■=∑■■ρ■×rate■+β■×νol■×I(νol■≤γ)+β■×νol■×I(νol■>γ)+c (3)

式(3)中,波動(dòng)νol是門檻變量,γ是門檻值,I()是指示函數(shù),如果括號(hào)內(nèi)的判別為真,則I()取1,否則取0,β■、β■為對(duì)應(yīng)階段的波動(dòng)變量系數(shù)。式(3)是只含一個(gè)門檻值時(shí)的方程,如果含有兩個(gè)或多個(gè)門檻值,需進(jìn)一步分類,限于篇幅,這里不再贅述。

門檻回歸的思想是將門檻變量的所有觀察值都當(dāng)作可能的門檻值,據(jù)此分割樣本并進(jìn)行OLS回歸,記S1(γ)是門檻值為γ時(shí)式(3)的殘差平方和,則估計(jì)的最優(yōu)門檻值為■=argminS1(γ)。當(dāng)估計(jì)出門檻值后,需要進(jìn)行兩個(gè)檢驗(yàn),第一個(gè)是對(duì)是否存在門檻效應(yīng)的檢驗(yàn),其原假設(shè)是不存在門檻效應(yīng)(H0:β■=β■),備選假設(shè)是存在門檻效應(yīng)(H1:β■≠β■),當(dāng)原假設(shè)成立時(shí),將模型估計(jì)得到的殘差平方和記為S0,當(dāng)備擇假設(shè)成立時(shí),將模型估計(jì)得到的殘差平方和記為S1(■),則此時(shí)可以構(gòu)造統(tǒng)計(jì)量F=(S0-S1(■))/■■,■■為門檻值為■時(shí)的殘差序列方差。在原假設(shè)下門檻估計(jì)值■是無(wú)法識(shí)別的,這造成傳統(tǒng)的檢驗(yàn)統(tǒng)計(jì)量并非服從卡方分布,從而無(wú)法對(duì)假設(shè)的顯著性進(jìn)行判別。為解決這一問題,Hansen提出使用自助抽樣法(bootstrap,也稱自舉法)得到統(tǒng)計(jì)量的漸進(jìn)分布,從而得到對(duì)應(yīng)的概率水平。第二個(gè)是門檻估計(jì)值是否等于真實(shí)值的檢驗(yàn)。在獲得門檻估計(jì)值后還要檢驗(yàn)其是否為真實(shí)值的一致性估計(jì),檢驗(yàn)原假設(shè)為:H0:■=γ■,似然比檢驗(yàn)統(tǒng)計(jì)量為L(zhǎng)R(■)=(S1-S1(■))/■■,同樣該統(tǒng)計(jì)量也為非標(biāo)準(zhǔn)正態(tài)分布,Hansen計(jì)算了LR(γ■)的置信區(qū)間,即在顯著性水平α下,當(dāng)LR(γ■)≤c(α)=-21n[-■]時(shí),不能拒絕原假設(shè)。

(二)數(shù)據(jù)及統(tǒng)計(jì)描述

本文采用時(shí)間序列和面板數(shù)據(jù)兩種數(shù)據(jù)形式進(jìn)行研究。在時(shí)間序列上,主要使用我國(guó)改革開放后(1978~2012年)的GDP和工業(yè)行業(yè)增加值增長(zhǎng)率數(shù)據(jù),數(shù)據(jù)均來(lái)源于《2013年中國(guó)統(tǒng)計(jì)年鑒》。分地區(qū)(22個(gè)省、5個(gè)自治區(qū)、4個(gè)直轄市)的增長(zhǎng)率面板數(shù)據(jù)來(lái)源于《新中國(guó)六十年統(tǒng)計(jì)資料匯編》和《2013年中國(guó)統(tǒng)計(jì)年鑒》,分工業(yè)行業(yè)(行業(yè)名稱見中國(guó)統(tǒng)計(jì)年鑒,剔除掉其它工業(yè),共37個(gè)行業(yè))的增長(zhǎng)率面板數(shù)據(jù)全部來(lái)源于各年《中國(guó)工業(yè)經(jīng)濟(jì)統(tǒng)計(jì)年鑒》。

對(duì)于經(jīng)濟(jì)波動(dòng),在國(guó)外研究波動(dòng)與增長(zhǎng)關(guān)系的文獻(xiàn)中,基本上用增長(zhǎng)率的標(biāo)準(zhǔn)差(非條件波動(dòng))和條件波動(dòng)(ARCH類模型估計(jì)得到)兩種形式表征其波動(dòng)性。除了在時(shí)序數(shù)據(jù)估計(jì)上采用條件波動(dòng)作為穩(wěn)健性檢驗(yàn)外,本文均采用滾動(dòng)標(biāo)準(zhǔn)差測(cè)度波動(dòng)水平。滾動(dòng)標(biāo)準(zhǔn)差的計(jì)算公式為:

νol■=■ (4)

其中,■為第t-m+1期到第t期的平均增長(zhǎng)率,m是滾動(dòng)周期,由于我國(guó)每隔五年制定實(shí)施規(guī)劃,因此普遍認(rèn)為五年是一個(gè)經(jīng)濟(jì)周期,滾動(dòng)周期取5。

表1顯示了全國(guó)以及分地區(qū)、分工業(yè)行業(yè)的經(jīng)濟(jì)增長(zhǎng)率和波動(dòng)率數(shù)據(jù)。從表中可以看出,我國(guó)GDP年度經(jīng)濟(jì)增長(zhǎng)率基本在10%左右,波動(dòng)率在3%附近,總體上呈現(xiàn)高速平穩(wěn)增長(zhǎng)的態(tài)勢(shì),并且低波動(dòng)時(shí)期和高波動(dòng)時(shí)期平均增長(zhǎng)率并未出現(xiàn)很大差距。但是,從工業(yè)行業(yè)看,平均波動(dòng)水平比GDP波動(dòng)水平高很多,這可能是由于改革開放以來(lái)我國(guó)工業(yè)行業(yè)投資具有周期性特征,并且在發(fā)展過(guò)程中不斷有企業(yè)進(jìn)入和企業(yè)退出導(dǎo)致行業(yè)波動(dòng)增加。此外,競(jìng)爭(zhēng)性行業(yè)比壟斷性行業(yè)增長(zhǎng)率更高,也說(shuō)明引入市場(chǎng)競(jìng)爭(zhēng)機(jī)制是促進(jìn)行業(yè)快速發(fā)展的動(dòng)力。

三、經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)影響的實(shí)證分析

(一)基于加總時(shí)間序列數(shù)據(jù)的實(shí)證分析

本文將采用門檻回歸模型尋找門檻值,并估計(jì)波動(dòng)低于門檻值和高于門檻值兩個(gè)階段經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響。表2是基于全國(guó)GDP和工業(yè)增加值二者增長(zhǎng)率序列的門檻回歸估計(jì)結(jié)果,其中列(1)和列(3)是條件波動(dòng)時(shí)的估計(jì)結(jié)果,列(2)和列(4)是標(biāo)準(zhǔn)差波動(dòng)的估計(jì)結(jié)果。

表2結(jié)果顯示,除了列(1)外,其余三個(gè)序列F檢驗(yàn)對(duì)應(yīng)的bootstrap概率水平p值均小于0.1,表明在10%的顯著性水平下,經(jīng)濟(jì)波動(dòng)對(duì)增長(zhǎng)影響的回歸模型存在門檻效應(yīng)。在條件波動(dòng)下,模型結(jié)果中波動(dòng)變量系數(shù)(β■和β■)均不顯著,但在低于門檻值時(shí),均為負(fù);在標(biāo)準(zhǔn)差波動(dòng)下,β■顯著小于0,而β■大于0不顯著,波動(dòng)變量門檻值分別為3.71%和5.27%,說(shuō)明在非條件波動(dòng)下,當(dāng)波動(dòng)水平低于門檻值時(shí),我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)存在負(fù)向影響,而當(dāng)波動(dòng)水平高于門檻值時(shí),經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響不顯著,這和Nelson(2007)的研究結(jié)果不同。

(二)基于地區(qū)和工業(yè)行業(yè)面板數(shù)據(jù)的分析

國(guó)外一些研究指出在研究經(jīng)濟(jì)波動(dòng)與經(jīng)濟(jì)增長(zhǎng)的關(guān)系時(shí),不同的數(shù)據(jù)類型可能會(huì)得出不同的結(jié)論,那么在轉(zhuǎn)型期的中國(guó),經(jīng)濟(jì)波動(dòng)與經(jīng)濟(jì)增長(zhǎng)的關(guān)系是否同樣存在這種現(xiàn)象。表3和表4的估計(jì)結(jié)果對(duì)此進(jìn)行了驗(yàn)證,由于面板數(shù)據(jù)不易得到條件波動(dòng),因而波動(dòng)只取標(biāo)準(zhǔn)差形式。其中,表3是基于地區(qū)分解面板數(shù)據(jù)的門檻回歸結(jié)果,表4是基于工業(yè)行業(yè)分解面板數(shù)據(jù)的門檻回歸結(jié)果。

從表3地區(qū)面板數(shù)據(jù)結(jié)果看,門檻效應(yīng)統(tǒng)計(jì)量檢驗(yàn)顯示經(jīng)濟(jì)周期性波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響存在門檻效應(yīng),波動(dòng)變量門檻值為4.90%,從不同波動(dòng)狀態(tài)下的波動(dòng)變量系數(shù)看,在低波動(dòng)時(shí)期經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響為負(fù),并且在1%概率水平下顯著。在高波動(dòng)時(shí)期波動(dòng)對(duì)增長(zhǎng)的影響為正,但不顯著,這個(gè)結(jié)果跟基于時(shí)間序列的估計(jì)結(jié)果一致,進(jìn)一步證實(shí)我國(guó)經(jīng)濟(jì)短期波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)的影響存在非線性,在低波動(dòng)水平下的負(fù)影響也與李永友(2006)、杜兩省等(2011)的結(jié)果相同。此外,基于分地區(qū)(東中西部)面板數(shù)據(jù)的實(shí)證分析結(jié)果與全國(guó)數(shù)據(jù)的分析結(jié)果類似,三個(gè)方程均顯示經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)存在非線性影響,在低波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)有負(fù)面影響,在高波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)有正面影響(或不顯著)。對(duì)于分地區(qū)與全國(guó)數(shù)據(jù)得到相同的結(jié)論,這說(shuō)明我國(guó)各地區(qū)的經(jīng)濟(jì)增長(zhǎng)受到國(guó)家宏觀環(huán)境和經(jīng)濟(jì)政策的共同沖擊,一項(xiàng)政策的出臺(tái)和實(shí)施對(duì)各個(gè)地區(qū)的經(jīng)濟(jì)波動(dòng)和經(jīng)濟(jì)增長(zhǎng)有同向的效應(yīng)。我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的負(fù)面影響主要來(lái)自于經(jīng)濟(jì)波動(dòng)對(duì)投資的負(fù)效應(yīng),統(tǒng)計(jì)數(shù)據(jù)顯示,2008年金融危機(jī)后我國(guó)整體企業(yè)投資減少而銀行儲(chǔ)蓄增加,這間接說(shuō)明了預(yù)防性儲(chǔ)蓄觀點(diǎn)中的隱含條件(儲(chǔ)蓄全部轉(zhuǎn)化為投資)在中國(guó)不成立,因此投資的降低導(dǎo)致經(jīng)濟(jì)減緩。而在高波動(dòng)期,波動(dòng)對(duì)增長(zhǎng)影響正向不顯著,則有可能是較高的經(jīng)濟(jì)波動(dòng)例如經(jīng)濟(jì)危機(jī)的結(jié)果。一方面,經(jīng)濟(jì)危機(jī)能促進(jìn)我國(guó)的產(chǎn)業(yè)結(jié)構(gòu)調(diào)整和資源優(yōu)化配置;另一方面,危機(jī)發(fā)生短期內(nèi)企業(yè)倒閉潮要大于新企業(yè)增長(zhǎng)數(shù)量,因此對(duì)經(jīng)濟(jì)增長(zhǎng)的影響取決于哪種機(jī)制占主導(dǎo)。

表4是基于工業(yè)行業(yè)面板數(shù)據(jù)的結(jié)果。其中,第二列的門檻效應(yīng)檢驗(yàn)概率p值小于0.01,說(shuō)明整體工業(yè)行業(yè)的周期性波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)的影響存在門檻效應(yīng),門檻值為16.96%。從波動(dòng)變量系數(shù)看,低波動(dòng)時(shí)期的波動(dòng)變量系數(shù)為負(fù),并且高度顯著,而高波動(dòng)時(shí)期不顯著,這和基于工業(yè)增加值增長(zhǎng)率的時(shí)間序列數(shù)據(jù)實(shí)證分析結(jié)果一致,也與基于全國(guó)面板數(shù)據(jù)的實(shí)證分析結(jié)果一致。分不同行業(yè)看,競(jìng)爭(zhēng)性行業(yè)結(jié)果與整體工業(yè)的結(jié)果類似,門檻值為17.42%,小于0高度顯著,不顯著;壟斷性行業(yè)門檻值為25.35%,在高于門檻值時(shí),波動(dòng)變量系數(shù)同樣不顯著,但在低于門檻值時(shí),系數(shù)符號(hào)與競(jìng)爭(zhēng)性行業(yè)恰好相反。這些結(jié)果表明工業(yè)行業(yè)的經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響同樣存在非線性,但是在不同行業(yè)性質(zhì)(競(jìng)爭(zhēng)和壟斷)下,門檻效應(yīng)的結(jié)果不同,競(jìng)爭(zhēng)性行業(yè)在波動(dòng)低于門檻值時(shí),短期波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)有負(fù)面影響,壟斷行業(yè)則有正面影響。造成這個(gè)結(jié)果的可能解釋是,我國(guó)還是一個(gè)主要依靠投資拉動(dòng)經(jīng)濟(jì)增長(zhǎng)的國(guó)家,在壟斷行業(yè)中基本上是國(guó)有或國(guó)有控股企業(yè),而競(jìng)爭(zhēng)行業(yè)中基本上以非國(guó)有(私營(yíng))經(jīng)濟(jì)為主體,國(guó)有企業(yè)和私營(yíng)企業(yè)對(duì)風(fēng)險(xiǎn)(波動(dòng))的態(tài)度決定了二者的投資行為。我國(guó)國(guó)有企業(yè)對(duì)投資有偏好特征,當(dāng)面臨經(jīng)濟(jì)沖擊或經(jīng)濟(jì)衰退時(shí),國(guó)有企業(yè)仍然有投資甚至加大投資的沖動(dòng),而較少考慮投資風(fēng)險(xiǎn)。相反,私營(yíng)企業(yè)則基本上是以市場(chǎng)為導(dǎo)向,以利潤(rùn)為目標(biāo),同時(shí)需要承擔(dān)投資風(fēng)險(xiǎn)。因此,當(dāng)經(jīng)濟(jì)面臨不確定性因素時(shí),會(huì)選擇減少或延緩?fù)顿Y。此外,經(jīng)濟(jì)衰退時(shí)私營(yíng)企業(yè)也會(huì)受到資金的約束而影響投資行為。這個(gè)結(jié)論表明在經(jīng)濟(jì)受到?jīng)_擊時(shí)政府部門采取穩(wěn)定性政策可以避免經(jīng)濟(jì)陷入嚴(yán)重的衰退。

四、主要結(jié)論

本文基于改革開放以來(lái)我國(guó)加總經(jīng)濟(jì)增長(zhǎng)率時(shí)間序列數(shù)據(jù)和分地區(qū)和工業(yè)行業(yè)面板數(shù)據(jù),在考慮到處于不同波動(dòng)狀態(tài)的經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)可能存在非線性影響下,運(yùn)用門檻回歸模型,重新考察了我國(guó)經(jīng)濟(jì)周期性波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)的影響。研究結(jié)果表明:我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響存在波動(dòng)門檻效應(yīng),不同的波動(dòng)狀態(tài)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響不同。從全國(guó)加總GDP和加總工業(yè)增加值增長(zhǎng)率數(shù)據(jù)看,在低波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)的影響有減損效應(yīng),而在高波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)的影響不顯著。分地區(qū)數(shù)據(jù)也得出了類似的結(jié)論,但在不同性質(zhì)工業(yè)行業(yè)下,在低于波動(dòng)門檻值時(shí),競(jìng)爭(zhēng)性行業(yè)波動(dòng)對(duì)增長(zhǎng)有負(fù)面影響,而壟斷性行業(yè)波動(dòng)對(duì)增長(zhǎng)有正面影響,在高波動(dòng)時(shí)影響均不顯著。在低波動(dòng)時(shí)期,導(dǎo)致競(jìng)爭(zhēng)性行業(yè)和壟斷性行業(yè)短期波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)影響相反的原因是二者企業(yè)對(duì)風(fēng)險(xiǎn)的投資偏好不同。由實(shí)證分析結(jié)果還可以進(jìn)一步推斷,中國(guó)還是一個(gè)以投資為主體的經(jīng)濟(jì)轉(zhuǎn)型國(guó)家,預(yù)防性儲(chǔ)蓄觀點(diǎn)和創(chuàng)造性破壞理論在目前還不成立。因此,在經(jīng)濟(jì)受到?jīng)_擊時(shí),必要性的政府穩(wěn)定性政策可以促進(jìn)我國(guó)經(jīng)濟(jì)的增長(zhǎng),避免陷入嚴(yán)重的衰退。此外,結(jié)合經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)長(zhǎng)期增長(zhǎng)的影響,政府部門要對(duì)不同行業(yè)制定不同的經(jīng)濟(jì)調(diào)節(jié)政策,最大限度地減少經(jīng)濟(jì)沖擊帶來(lái)的負(fù)面效應(yīng)。

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The Threshold Effect of Economic Cyclical Fluctuation on Long-term Economic Growth: A Hypothesis and An Empirical Analysis

ZHAO Feng

(Tianshui Municipal Sub-branch PBC, Tianshui Gansu 741000)

Abstract:Based on the national aggregation time-series data and panel data by areas and industries since the reform and opening up, under the assumption that the relationship between economic cyclical fluctuation and economic growth is nonlinear in different state of fluctuation, the paper studies the effect of economic fluctuation on economic growth in China utilizing the Threshold Regression Model. The results show that there exists a threshold effect of the economic cyclical fluctuation on the economic growth. As a whole, in the low fluctuation phase, the economic fluctuation has a derogation effect on the economic growth, but the effect is various in different industries. Competitive industries have the negative effect on the growth while monopoly industries have the positive effect. In the high fluctuation phase, the positive effect of the fluctuation on the growth is not significant.

Key words: economic cycle; long-term growth; threshold effect; panel data

責(zé)任編輯、校對(duì):張宏亮

四、主要結(jié)論

本文基于改革開放以來(lái)我國(guó)加總經(jīng)濟(jì)增長(zhǎng)率時(shí)間序列數(shù)據(jù)和分地區(qū)和工業(yè)行業(yè)面板數(shù)據(jù),在考慮到處于不同波動(dòng)狀態(tài)的經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)可能存在非線性影響下,運(yùn)用門檻回歸模型,重新考察了我國(guó)經(jīng)濟(jì)周期性波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)的影響。研究結(jié)果表明:我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響存在波動(dòng)門檻效應(yīng),不同的波動(dòng)狀態(tài)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響不同。從全國(guó)加總GDP和加總工業(yè)增加值增長(zhǎng)率數(shù)據(jù)看,在低波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)的影響有減損效應(yīng),而在高波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)的影響不顯著。分地區(qū)數(shù)據(jù)也得出了類似的結(jié)論,但在不同性質(zhì)工業(yè)行業(yè)下,在低于波動(dòng)門檻值時(shí),競(jìng)爭(zhēng)性行業(yè)波動(dòng)對(duì)增長(zhǎng)有負(fù)面影響,而壟斷性行業(yè)波動(dòng)對(duì)增長(zhǎng)有正面影響,在高波動(dòng)時(shí)影響均不顯著。在低波動(dòng)時(shí)期,導(dǎo)致競(jìng)爭(zhēng)性行業(yè)和壟斷性行業(yè)短期波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)影響相反的原因是二者企業(yè)對(duì)風(fēng)險(xiǎn)的投資偏好不同。由實(shí)證分析結(jié)果還可以進(jìn)一步推斷,中國(guó)還是一個(gè)以投資為主體的經(jīng)濟(jì)轉(zhuǎn)型國(guó)家,預(yù)防性儲(chǔ)蓄觀點(diǎn)和創(chuàng)造性破壞理論在目前還不成立。因此,在經(jīng)濟(jì)受到?jīng)_擊時(shí),必要性的政府穩(wěn)定性政策可以促進(jìn)我國(guó)經(jīng)濟(jì)的增長(zhǎng),避免陷入嚴(yán)重的衰退。此外,結(jié)合經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)長(zhǎng)期增長(zhǎng)的影響,政府部門要對(duì)不同行業(yè)制定不同的經(jīng)濟(jì)調(diào)節(jié)政策,最大限度地減少經(jīng)濟(jì)沖擊帶來(lái)的負(fù)面效應(yīng)。

參考文獻(xiàn)

[1]Blackburn K and Pelloni A. On the Relationship Between Growth and volatility[J]. Economics Letters, 2004, (83):123-127.

[2]Buch C. et al. Great Moderation at the Firm Level? Unconditional vs. Conditional Output Volatility[R] .CES: Working Papers,

2009.1-27.

[3]Ramey G. and Ramey V.A. Cross-country Evidence on the Link Between Volatility and Growth[J].American Economic

Review, 1995,(85):1138-1151.

[4]杜兩省,齊鷹飛,陳太明.經(jīng)濟(jì)波動(dòng)對(duì)中國(guó)經(jīng)濟(jì)增長(zhǎng)影響的穩(wěn)健性研究[J].云南財(cái)經(jīng)大學(xué)學(xué)報(bào),2011,(4):5-14。

[5]李永友.經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的減損效應(yīng):中國(guó)的經(jīng)驗(yàn)證據(jù)[J].當(dāng)代經(jīng)濟(jì)科學(xué),2006,(4):14-20。

The Threshold Effect of Economic Cyclical Fluctuation on Long-term Economic Growth: A Hypothesis and An Empirical Analysis

ZHAO Feng

(Tianshui Municipal Sub-branch PBC, Tianshui Gansu 741000)

Abstract:Based on the national aggregation time-series data and panel data by areas and industries since the reform and opening up, under the assumption that the relationship between economic cyclical fluctuation and economic growth is nonlinear in different state of fluctuation, the paper studies the effect of economic fluctuation on economic growth in China utilizing the Threshold Regression Model. The results show that there exists a threshold effect of the economic cyclical fluctuation on the economic growth. As a whole, in the low fluctuation phase, the economic fluctuation has a derogation effect on the economic growth, but the effect is various in different industries. Competitive industries have the negative effect on the growth while monopoly industries have the positive effect. In the high fluctuation phase, the positive effect of the fluctuation on the growth is not significant.

Key words: economic cycle; long-term growth; threshold effect; panel data

責(zé)任編輯、校對(duì):張宏亮

四、主要結(jié)論

本文基于改革開放以來(lái)我國(guó)加總經(jīng)濟(jì)增長(zhǎng)率時(shí)間序列數(shù)據(jù)和分地區(qū)和工業(yè)行業(yè)面板數(shù)據(jù),在考慮到處于不同波動(dòng)狀態(tài)的經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)可能存在非線性影響下,運(yùn)用門檻回歸模型,重新考察了我國(guó)經(jīng)濟(jì)周期性波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)的影響。研究結(jié)果表明:我國(guó)經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響存在波動(dòng)門檻效應(yīng),不同的波動(dòng)狀態(tài)對(duì)經(jīng)濟(jì)增長(zhǎng)的影響不同。從全國(guó)加總GDP和加總工業(yè)增加值增長(zhǎng)率數(shù)據(jù)看,在低波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)的影響有減損效應(yīng),而在高波動(dòng)時(shí)期,波動(dòng)對(duì)增長(zhǎng)的影響不顯著。分地區(qū)數(shù)據(jù)也得出了類似的結(jié)論,但在不同性質(zhì)工業(yè)行業(yè)下,在低于波動(dòng)門檻值時(shí),競(jìng)爭(zhēng)性行業(yè)波動(dòng)對(duì)增長(zhǎng)有負(fù)面影響,而壟斷性行業(yè)波動(dòng)對(duì)增長(zhǎng)有正面影響,在高波動(dòng)時(shí)影響均不顯著。在低波動(dòng)時(shí)期,導(dǎo)致競(jìng)爭(zhēng)性行業(yè)和壟斷性行業(yè)短期波動(dòng)對(duì)長(zhǎng)期增長(zhǎng)影響相反的原因是二者企業(yè)對(duì)風(fēng)險(xiǎn)的投資偏好不同。由實(shí)證分析結(jié)果還可以進(jìn)一步推斷,中國(guó)還是一個(gè)以投資為主體的經(jīng)濟(jì)轉(zhuǎn)型國(guó)家,預(yù)防性儲(chǔ)蓄觀點(diǎn)和創(chuàng)造性破壞理論在目前還不成立。因此,在經(jīng)濟(jì)受到?jīng)_擊時(shí),必要性的政府穩(wěn)定性政策可以促進(jìn)我國(guó)經(jīng)濟(jì)的增長(zhǎng),避免陷入嚴(yán)重的衰退。此外,結(jié)合經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)長(zhǎng)期增長(zhǎng)的影響,政府部門要對(duì)不同行業(yè)制定不同的經(jīng)濟(jì)調(diào)節(jié)政策,最大限度地減少經(jīng)濟(jì)沖擊帶來(lái)的負(fù)面效應(yīng)。

參考文獻(xiàn)

[1]Blackburn K and Pelloni A. On the Relationship Between Growth and volatility[J]. Economics Letters, 2004, (83):123-127.

[2]Buch C. et al. Great Moderation at the Firm Level? Unconditional vs. Conditional Output Volatility[R] .CES: Working Papers,

2009.1-27.

[3]Ramey G. and Ramey V.A. Cross-country Evidence on the Link Between Volatility and Growth[J].American Economic

Review, 1995,(85):1138-1151.

[4]杜兩省,齊鷹飛,陳太明.經(jīng)濟(jì)波動(dòng)對(duì)中國(guó)經(jīng)濟(jì)增長(zhǎng)影響的穩(wěn)健性研究[J].云南財(cái)經(jīng)大學(xué)學(xué)報(bào),2011,(4):5-14。

[5]李永友.經(jīng)濟(jì)波動(dòng)對(duì)經(jīng)濟(jì)增長(zhǎng)的減損效應(yīng):中國(guó)的經(jīng)驗(yàn)證據(jù)[J].當(dāng)代經(jīng)濟(jì)科學(xué),2006,(4):14-20。

The Threshold Effect of Economic Cyclical Fluctuation on Long-term Economic Growth: A Hypothesis and An Empirical Analysis

ZHAO Feng

(Tianshui Municipal Sub-branch PBC, Tianshui Gansu 741000)

Abstract:Based on the national aggregation time-series data and panel data by areas and industries since the reform and opening up, under the assumption that the relationship between economic cyclical fluctuation and economic growth is nonlinear in different state of fluctuation, the paper studies the effect of economic fluctuation on economic growth in China utilizing the Threshold Regression Model. The results show that there exists a threshold effect of the economic cyclical fluctuation on the economic growth. As a whole, in the low fluctuation phase, the economic fluctuation has a derogation effect on the economic growth, but the effect is various in different industries. Competitive industries have the negative effect on the growth while monopoly industries have the positive effect. In the high fluctuation phase, the positive effect of the fluctuation on the growth is not significant.

Key words: economic cycle; long-term growth; threshold effect; panel data

責(zé)任編輯、校對(duì):張宏亮

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