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The impact of the COVID-19 prevention and economic interventions on express delivery industry:Evidence from China

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Journal of Management Science and Engineering 2024年第1期9卷 16-37页

作者： Juan Liu Jiafu Tang Minghe Sun School of Economics Dongbei University of Finance&Economics(DUFE)Dalian116025China School of Management Science&Engineering Dongbei University of Finance&Economics(DUFE)Dalian116025China Department of Management Science and Statistics College of BusinessThe University of Texas at San AntonioSan AntonioUSA

As a fundamental logistics service,the express delivery(ED)industry provides production and consumption activities to maintain efficient supply chain *** plays an important role in promoting industrial development and maintaining daily life and *** study examined the effects of COVID-19 on the ED industry using ED package delivery data from 31 provinces(autonomous regions and municipalities)in *** a difference-in-differences method,the COVID-19 outbreak was found to have a positive effect and epidemic prevention and control(EPC)policies were found to have negative effects on the development of the ED *** addition to EPC policies,the Chinese government has implemented other short-term economic interventions(SEI),such as the resumption of work and production(RWP),policies to balance economic growth,and epidemic *** study divided the pandemic period into three stages to analyze the different impacts of EPC and SEI policy changes on the ED *** RWP policies adopted during the pandemic positively impacted the volume and income of packages delivered to the ED *** conclusions of this study are significant for the ED industry in addressing public health emergencies and for the Chinese government to formulate EPC and SEI policies during epidemic periods.

关键词： COVID-19 Epidemic prevention and control policy Resumption of work and production Express delivery industry Quasi-experiment difference-in-differences

How Do Chinese Exporting Firms Respond to Environment-related Notifications?A Green Innovation Perspective

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China & World Economy 2024年第5期32卷 1-27页

作者： Wen Chen Yinzi Fan School of Economics Xiamen UniversityChina

Environment-related notifications play an important role in the coordinated development of trade and environment *** this paper,we examine how Chinese exporting enterprises responded to environment-related notifications implemented by the US through green innovation *** notifications significantly encouraged exporting firms to increase green innovation,as evidenced particularly by the number of green utility model patents *** effect was most pronounced in non-foreign-invested enterprises,high-total-factor-productivity firms,technology-intensive industries,and nongreen *** notifications also increased the probability of enterprises exiting the market while reducing the probability of new enterprises entering *** innovation motivation of surviving firms was higher than that of the new *** analysis also suggests that environment-related notifications had a crowding-out effect on other innovation rather than a leverage *** study offers important empirical evidence that helps enterprises to respond to green non-tariff measures effectively,enrich the existing literature,and provide practical guidance for both policymaking and corporate development.

关键词： difference-in-differences environment-related notification green innovation.tradeandenvironment JELcodes:F13 F14 O33

E-commerce,Pandemic Shock,and the Survival of Small and Medium Enterprises

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China & World Economy 2024年第5期32卷 113-139页

作者： Zengdong Cao Qin Tu Nichola Latoya Williams Business School Beijing Normal UniversityChina Center for Innovation and Development Studies Beijing Normal UniversityChina Department of Finance and Economics Sheffield Hallam UniversityUnited Kingdom

This study examines the impact of e-commerce on the survival rate of small and medium enterprises(SMEs)during the COVID-19 pandemic using a combined dataset from the Enterprise Survey for Innovation and Entrepreneurship in China for the period from 2018 to *** conducted a difference-in-differences analysis by exploiting the variation in the adoption of e-commerce across SMEs before and after the outbreak of *** results show that e-commerce had a significantly positive effect on the survival rate of SMEs during the ***,it improved the survival rate of SMEs by 3.0 to 3.4 percentage points by expanding the scale of the enterprises'markets,mitigating declines in orders,shortening the repayment periods of accounts receivable,and improving cash flow during a *** analysis reveals that the impact of e-commerce was more pronounced for SMEs with a larger share of online sales and for labor-intensive SMEs,and third-party e-commerce platforms or Web sites played a bigger role than self-built Web sites and social *** study offers novel evidence highlighting the value of digitalization for firms during the crisis.

关键词： COVID-19 pandemic difference-in-differences e-commerce survival rate

Do smart city policies improve energy efficiency?Evidence from China

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Chinese Journal of Population,Resources and Environment 2024年第2期22卷 185-193页

作者： Zhilong Qin Haoming Yang Lei Shi Ouyang Ying Wenhan Liu Institute of Western China Economic Research Southwestern University of Finance and EconomicsChengdu 611130China School of Law Southwestern University of Finance and EconomicsChengdu 611130China School of Business The University of QueenslandQueensland 4072Australia West China School of Medicine West China Hospital of Sichuan UniversityChengdu 610041China Business School Chengdu UniversityChengdu 610106China

To address air pollution and offer a convenient and comfortable living environment,the Chinese government launched a smart city pilot(SCP)project in 2012,accompanied by a comprehensive set of environmental and energy-related laws and *** academic interest in smart cities has surged,there remains a notable gap in empirical research exploring the economic,environmental,and energy effects of such *** 232 prefecture-level cities from 2003 to 2017 as research subjects,this study measures energy effi‐ciency by using energy consumption per unit of GDP and adopts a difference-in-differences(DID)analysis to investigate the impact of SCPs on energy *** empirical results indicate that SCPs improved energy efficiency by promoting urban technological innovation capabilities and green total factor productivity,and this effect was more pronounced in cities that were more dependent on traditional fossil fuel energy sources and had more developed fiscal and financial *** the impact of smart city construction on energy utilization efficiency in developing countries,such as China,is not only significantly enlightening for China’s green and low-carbon transition but also provides reference opinions for constructing smart cities and the path to enhancing energy efficiency in other developing *** findings provide valuable insights into the global development of smart cities,urban sustainability,and high-quality economic growth.

关键词： Smart city project Energy efficiency Legislation on environment and energy Technological innovation capabilities Green total factor productivity difference-in-differences

Quantifying the effects of stripe rust disease on wheat canopy spectrum based on eliminating non-physiological stresses

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The Crop Journal 2022年第5期10卷 1284-1291页

作者： Xia Jing Kaiqi Du Weina Duan Qin Zou Tingting Zhao Bingyu Li Qixing Ye Lieshen Yan College of Geomatics Xi’an University of Science and TechnologyXi’an 710054ShaanxiChina Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China

The wheat canopy reflectance spectrum is affected by many internal and external factors such as diseases and growth stage. Separating the effects of disease stress on the crop from the observed mixed signals is crucial for increasing the precision of remote sensing monitoring of wheat stripe rust. The canopy spectrum of winter wheat infected by stripe rust was processed with the difference-in-differences(DID) algorithm used in econometrics. The monitoring accuracies of wheat stripe rust before and after processing with the DID algorithm were compared in the presence of various external factors, disease severity, and several simulated satellite sensors. The correlation between the normalized difference vegetation index processed by the DID algorithm(NDVI-DID) and the disease severity level(SL) increased in comparison with the NDVI before processing. The increase in precision in the natural disease area in the field in the presence of large differences in growth stage, growth, planting, and management of the crop was greater than that in the controlled experiment. For low disease levels(SL 40%).According to the measured hyperspectral data, the spectral reflectance of three satellite sensor levels was simulated. The wide-band NDVI was calculated. Compared with the wide-band NDVI and vegetation indexes(VI) before DID processing, there were increases in the correlation between SL and the various types of VIS-DID, as well as in the correlation between SL and NDVI-DID. It is feasible to apply the DID algorithm to multispectral satellite data and diverse types of VISfor monitoring wheat stripe rust. Our results improve the quantification of independent effects of stripe rust infection on canopy reflectance spectrum,increase the precision of remote sensing

关键词： difference-in-differences Wheat stripe rust Severity leve Non-physiological stress Independent effects

Urbanization under globalization:How does the Belt and Road Initiative affect urbanization levels in participating countries

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Journal of Geographical Sciences 2022年第11期32卷 2170-2188页

作者： MA Haitao Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China

China’s Belt and Road Initiative(BRI)presents the world with a new era of inclusive globalization,which will shape urbanization patterns *** study considered the launch of BRI as a quasi-experiment,where we evaluated the BRI’s impact on urbanization by way of difference-in-differences(DID)and propensity score matching(PSM)*** results showed that the BRI exerted a significantly negative effect on urbanization in its first three *** positive effect emerged from the fifth year onwards,indicating that the BRI’s positive effect on urbanization required a period of practical *** analysis and placebo test were also conducted to verify the robustness of the *** effects in low-income countries were revealed to have been much greater than in high-income countries,meaning the BRI had been conducive to promote local urban growth in underdeveloped ***,the geographical detector model was introduced to discuss the influencing mechanism of urbanization in BRI and non-BRI countries,showing external factors were the prominent driving forces in BRI countries,whereas internal drivers played an important role in non-BRI *** findings indicated that the implementation of the BRI contributed to building global economic growth and supporting a shared future.

关键词： Belt and Road Initiative urbanization globalization difference-in-differences propensity score matching

Impacts of Market-based Environmental Regulation on Green Total Factor Energy Efficiency in China

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China & World Economy 2023年第3期31卷 92-114页

作者： Ge Li Da Gao Yi Li School of Business and Management Donghua UniversityChina School of Law and Business Wuhan Institute of TechnologyChina Food and Resource Economics University of FloridaUS.

This study employed a difference-in-differences design to assess the effect of marketbased environmental regulation on green total factor energy efficiency(GTFEE)in a quasi-natural experiment that investigated China's carbon emissions trading scheme(ETS).The empirical results show that ETS had a positive effect on GTFEE.A series of robustness tests revealed that the results were *** mechanisms through which ETS can improve GTFEE include the promotion of technological innovation and the upgrading of industrial *** positive effects varied in different cities and diferent regions-the result was pronounced in eastern China and developed cities,but it was insignificant in central and western areas and developing *** study confirms the satisfactory performance of China's ETS in improving GTFEE,and this is relevant for other emerging countries.

关键词： carbon emissions trading schemes difference-in-differences green tota factor energy efficiency market-based environmental regulation

Pain or Gain?Chinese Experience of Capital Account Liberalization

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China & World Economy 2019年第5期27卷 79-107页

作者： Hongfeng Peng Jingwen Yu School of Finance Shandong University of Finance and EconomicsChina School of Economics and Management Wuhan UniversityChina

The neoclassical growth model predicts that capital account liberalization could potentially enhance economic performance;however, there is no consistent empirical evidence to support this positive association. Using a novel dataset of Chinese capital account openness, this paper demonstrates a positive relationship between capital account liberalization and aggregate economic performance. The difference-indifferences method is used to capture the causal effect of capital account liberalization on economic performance by taking advantage of variations in both external financial dependence and the progress of capital account openness. We investigate three channels that could strengthen this positive relationship using a firm-level dataset. We find that capital account liberalization could:(i) alleviate the degree of resource misallocation, and this effect is more significant in industries relying heavily on external finance and in regions with more favorable business environments;(ii) enhance firms' total factor productivity;and (iii) promote innovation. Our findings suggest that a strategy of gradual openness will leave some leeway not only for improvement in domestic markets but also to mitigate exposure to unfavorable global shocks.

关键词： capital account liberalization difference-in-differences innovation productivity

Impact of the green credit policy on external financing,economic growth and energy consumption of the manufacturing industry

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Chinese Journal of Population,Resources and Environment 2022年第1期20卷 59-68页

作者： Sheng Wu Liangpeng Wu Xianglian Zhao College of Economic and Management Nanjing University of Aeronautics and AstronauticsNanjing211106China College of Management Engineering Nanjing University of Information Science&TechnologyNanjing210044China

China attempts to achieve energy conservation,emission reduction and environmental protection through the implementation of the green credit policy,but its implementation impact is still *** important content of the green credit policy is to require banking and financial institutions to tighten the credit exposure of industries of‘high pollution and high energy consumption’and industries with overcapacity,so as to use economic leverage to curb their blind expansion and reduce energy consumption by controlling external *** paper examined the impact and the lingering effects of the green credit policy on external financing,economic growth and energy consumption in the manufacturing industry,which was most influenced by the green credit policy,from 2003 to 2016 by using the DID ***,this paper estimated the dynamic endogenous relationships among external financing,economic growth and energy consumption with two-step system GMM model to investigate the influential path of the green credit *** results showed that:the green credit policy had a significant negative impact on the external financing of manufacturing industry,but its negative impact on the economic growth and energy consumption of manufacturing industry was not statistically significant,and the effect of the green credit policy had a dynamic feature of weakening with ***,in the manufacturing industry,there was a bilateral causal relationship between the energy consumption and economic growth of the control group industry and the processing group *** was a bilateral causal relationship between the economic growth and external financing of the control group industries in the manufacturing *** was a unilateral causal relationship between the economic growth and external financing of the processing group industries in the manufacturing industry,while the external causality existed between the control group industries and the processi

关键词： Green credit Energy consumption difference-in-differences Manufacturing industry