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Impact of land use changes on catchment soil erosion and sediment yield in the northeastern China:A panel data model application

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International Journal of Sediment Research 2020年第5期35卷 540-549页

作者： Haiyan Fang College of Resources and Environment University of Chinese Academy of Sciences Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences

Land use is an important factor influencing soil erosion and sediment yield(SESY).Regressing soil erosion intensity(SEI) and sediment yield(SY) to land use characteristics can provide necessary information for controlling soil ***,current simple regression methods emphasize cross sectional parameters,with less emphasis on temporal variability of relevant land use parameters so that the derived effects of land use change on SESY can be ***,a panel data method was applied to quantify the impact of land use change on SESY in 1954,1975,and 2015,based on the WaTEM/SEDEM model and seven landscape metrics for 25 reservoir catchments in northeastern *** results indicate that SEI and area-specific SY(SSY) continuously decreased from 1954 to 2015,which were significantly correlated with landscape metrics such as area-edge metrics of mean patch area(AREAN),shape index of the mean related circumscribing circle(CIRCLEN),aggregation index of effective mesh size(MESH),patch cohesion index(COHESION),and diversity metrics such as Shannon’s diversity index(SHDI),patch richness density(PRD),and modified Simpson’s evenness index(MSIEI).The results suggested that catchment SESY can be reduced through decreasing mean patch area,patch mesh size,and physical connectivity of patches,enriching landscape types,and elongating land use *** findings are helpful to effectively implement soil conservation measures in northeastern China and similar regions *** current study also implies that the panel data approach will have beneficial potential applications in earth-science research fields.

关键词： WaTEM/SEDEM Soil erosion Sediment yield Landscape metrics panel data model

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Ecological Footprint and Endogenous Economic Growth in the Poyang Lake Area in China Based on Empirical Analysis of panel data model

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Journal of Resources and Ecology 2012年第4期3卷 367-372页

作者：何宜庆车婷王芸南昌大学经济与管理学院南昌330031 南昌大学系统工程研究所南昌330031 华东交通大学经济管理学院南昌330013

In this paper, ecological footprint methods were used to calculate the ecological footprint of six cities （Nanchang, Jingdezhen, Jiujiang, Xinyu, Yingtan and Fuzhou） in the Poyang Lake Area, Jiangxi, China from 1991 to 2010. Ecological footprint was the input factor for ecological resources and the contribution of this and other factors such as labor and capital to economic growth were analyzed. The results showed that, from 1991 to 2010, ecological footprints in the six cities increased year by year. The amount of land for fossil energy, under cultivation and grassland influenced total ecological footprint in each city. The contribution of ecological resources, labor factors and capital factors to economic growth showed regional differences. Nanchang, Jiujiang, Xinyu, and Yingtan are capital-orientated and capital factor had a great influence on the economic growth rates, whereas, Jingdezhen and Fuzhou were labor-orientated. The contribution of ecological resources to economic growth in the six cities was the lowest of all three factors, meaning that efficiency of ecological resource utilization is low. Total productivity plays a key role in economic development; however, the overall level of total factor productivity for the six cities was low and indicates that the technological content of Poyang Lake Area’s economic growth is low and the utilization of input factors extensive. In summary, we suggest changing the mode of economic growth and developing tertiary industry in the region.

关键词： Poyang Lake Area ecological footprint endogenous economic growth panel data model

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Health diagnosis of ultrahigh arch dam performance using heterogeneous spatial panel vector model

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Water Science and Engineering 2024年第2期17卷 177-186页

作者： Er-feng Zhao Xin Li Chong-shi Gu The National Key Laboratory of Water Disaster Prevention Hohai UniversityNanjing 210098China NationalEngineering Research Centerof Water Resources Eficient Utilization and Engineering Safety Hohai UniversityNanjing 20098China

Currently,more than ten ultrahigh arch dams have been constructed or are being constructed in *** control is essential to long-term operation of these *** study employed the flexibility coefficient and plastic complementary energy norm to assess the structural safety of arch dams.A comprehensive analysis was conducted,focusing on differences among conventional methods in characterizing the structural behavior of the Xiaowan arch dam in ***,the spatiotemporal characteristics of the measured performance of the Xiaowan dam were explored,including periodicity,convergence,and time-effect *** findings revealed the governing mechanism of main ***,a heterogeneous spatial panel vector model was developed,considering both common factors and specific factors affecting the safety and performance of arch *** model aims to comprehensively illustrate spatial heterogeneity between the entire structure and local regions,introducing a specific effect quantity to characterize local deformation ***,the proposed model was applied to the Xiaowan arch dam,accurately quantifying the spatiotemporal heterogeneity of dam ***,the spatiotemporal distri-bution characteristics of environmental load effects on different parts of the dam were reasonably *** of the model prediction enhances its credibility,leading to the formulation of health diagnosis criteria for future long-term operation of the Xiaowan *** findings not only enhance the predictive ability and timely control of ultrahigh arch dams'performance but also provide a crucial basis for assessing the effectiveness of engineering treatment measures.

关键词： Ultrahigh arch dam Structural performance Deformation behavior Diagnosis criterion panel data model

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Decomposing the drivers of residential space cooling energy consumption in EU-28 countries using a panel data approach

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能源与人工环境(英文) 2020年第4期1卷 432-442页

作者： Andreas Andreou John Barrett Peter G.Taylor Paul E.Brockway Zia Wadud Sustainability Research Institute School of Earth and EnvironmentUniversity of LeedsLeedsLS29JTUK Low Carbon Energy Research Group School of Chemical and Process EngineeringUniversity of LeedsLeedsLS29JTUK Spatial modelling and Dynamics Research Group Institute for Transport StudiesUniversity of LeedsLeedsLS29JTUK

While space cooling currently represents less than 1%of final energy use in the residential sector of the Euro-pean Union(EU-28),it was the fastest growing end-use during the 2000-15 period with a mean annual growth rate of 6%per ***,little is known about factors which have driven regional air-conditioning(AC)energy consumption over time,since the literature is limited to cross-sectional studies that lack differentiation between climatic and non-climatic *** projections for the EU’s electricity sector may therefore neglect the potential implications of rapidly growing AC *** develop a novel decomposition framework,which breaks down residential space cooling energy consumption in EU-28 countries into the effect of different components from 2000 to *** is extended to panel data models identifying specific drivers of space cooling’s climate-sensitive ***,we explore scenarios of residential AC energy consumption up to 2050 and evaluate their impact on summer time peak *** diffusion was found to be the key driver of space cooling energy consumption,but this effect was partly counterbalanced by efficiency *** weather influences AC equipment ownership rate in EU-28 households,personal income has a larger marginal *** baseline scenarios,AC diffusion saturates by 2050,while modestly increasing sectoral final energy ***,our range of scenario values for space cooling energy consumption in 2050 exceed the majority of those originat-ing from recently published *** a future renewables-driven electricity system,energy security risks may emerge from a scenario of fast AC up-take in new and renovated buildings,especially for colder European countries where modelled peak cooling electricity demand is shown to outgrow the projected expansion of solar *** findings have important implications for the EU’s strategy to decarbonise energy supply.

关键词： Space cooling AC diffusion Decomposition analysis panel data model Peak demand

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Direct energy rebound effect for road transportation in China

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Frontiers of Engineering Management 2023年第4期10卷 597-611页

作者： Donglan ZHA Pansong JIANG Xue ZHANG College of Economics and Management Nanjing University of Aeronautics and AstronauticsNanjing 211106China Research Centre for Soft Energy Science Nanjing University of Aeronautics and AstronauticsNanjing 211106China

The enhancement of energy efficiency stands as the principal avenue for attaining energy conservation and emissions reduction objectives within the realm of road ***,it is imperative to acknowledge that these objectives may,in part or in entirety,be offset by the phenomenon known as the energy rebound effect(ERE).To quantify the long-term EREs and short-term EREs specific to China’s road transportation,this study employed panel cointegration and panel error correction models,accounting for asymmetric price *** findings reveal the following:The long-term EREs observed in road passenger transportation and road freight transportation range from 13%to 25%and 14%to 48%,respectively;in contrast,the short-term EREs in road passenger transportation and road freight transportation span from 36%to 41%and 3.9%to 32%,*** is noteworthy that the EREs associated with road passenger transportation and road freight transportation represent a partial rebound effect,falling short of reaching the magnitude of a counterproductive backfire *** leads to the inference that the upsurge in energy consumption within the road transportation sector cannot be solely attributed to advancements in energy ***,various factors,including income levels,the scale of commodity trade,and industrial structure,exert more substantial facilitating ***,the escalation of fuel prices fails to dampen the demand for energy services,whether in the domain of road passenger transportation or road freight *** light of these conclusions,recommendations are proffered for the formulation of energy efficiency policies pertinent to road transportation.

关键词： road transportation direct energy rebound effect asymmetric price effects panel data model

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Inter-industry Technology Spillover Effects in China:Evidence from 35 Industrial Sectors

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China & World Economy 2012年第2期20卷 23-40页

作者： Wenqing Pan Delin Yang Min Lin School of Economics and Management Tsinghua University

The present paper calculates 35 industrial sectors similarity matrices for the period of 1997-2008 using China s input-output tables for 1997, 2002 and 2007, and uses these to measure inter-industry technology spillover to analyze the spillover effects on industrial sectors lahor productivity. The empirical analysis shows that inter-industry technology spillover has a significant positive effect on the labor productivity of each industry. The elasticity of productivity effects of inter-industry technology spillover is not only larger than that of direct R＆D input, but also increases over time. We group the industries into four major categories and find that the inter-industry technology spillover effect within the categories is, on average, greater than that between the four categories, indicating that technology spillover occurs more easily between similar industries. This research shows that the interindustry technology spillover effect in China has begun to increase, and the government should take advantage of this effect.

关键词： indirect R&D inter-industry similarity panel data model technology spillover effect

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Chinese decentralization and income inequality between urban and rural residents--An empirical study based on the dual dimensions of internal and external budget

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China Finance and Economic Review 2017年第3期6卷 62-87页

作者： Chu Deyin Han Yiduo Zhang Jinghua Anhui University of Finance and Economics China National Tax Instituteof State Administration of Taxation China

The paper firstly explains the mechanism of decentralization on income inequality from two theoretical dimensions of internal and external *** on the re-measurement of income Gini coefficient and Chinese decentralization level,this paper establishes panel data model from national and regional perspective to empirically investigate the impact of Chinese decentralization on income inequality between urban and rural ***,the promotion of budgetary income decentralization is conductive to reduce income inequality of urban and rural residents whether it is from the national or sub ***,although the promotion of budgetary expenditure decentralization exacerbates the urban-rural income inequality in the national level,it could obviously reduce the urban-rural income inequality in the midwest with relatively low level of budgetary expenditure ***,the impact of extra-budgetary decentralization on income inequality is consistent,no matter in the whole country,in eastern or in western *** means that the extra-budgetary income decentralization makes the income inequality between urban and rural residents worse while the extra-budgetary expenditure decentralization reduces the income inequality between urban and rural residents with different ***,the transfer payment,years of schooling and urban unemployment rate are conductive to narrow the income inequality between urban and rural residents while the impacts of economic development,urbanization and opening degree are obviously different in different *** above conclusions can not only be used for reference to further perfecting and reshaping the fair efficiency mechanism of Chinese decentralization,but also indicates the direction of the new fiscal and tax system reform.

关键词： Chinese decentralization budgetary and extra-budgetary income inequality between urban and rural residents panel data model

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Research on the Impact of Industrial Agglomeration and Structural Upgrade on County Economic Growth under the New Normal Condition-Based on the Empirical Study of 101 County Counties in Jiangsu and Zhejiang Provinces

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International Journal of Technology Management 2016年第12期 7-10页

作者： Junwei Xing CPC Liaoning Provincial Party School Liaoning 110004 China

In this paper, the method of generalized moments of data and systems for 101 counties in Jiangsu and Zhejiang Provinces is used to analyze the impact of industrial agglomeration and industrial structure upgrading on county economic growth. The real diagnosis result indicated that, the industry gathers with the industrial structure promotes has the forward function to the county territory economic growth rate, in the sample time that had not discovered the industry gathers to the economical growth existence non-linearity in？ uence. On the other hand, the industrial structure promotes to the county territory economy long-term growth power is stronger, later period should break through the present stage in the manufacturing industry mature county territory through the industrial structure promotion strategy the industry to glide down.

关键词： Industrial agglomeration Upgrading of industrial structure The county economy growth panel data model

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Factors Driving the Expansion of Construction Land:A panel data Study of Districts and Counties in Ningbo City,China

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Journal of Resources and Ecology 2018年第4期9卷 365-373页

作者： MOU Chufu WANG Limao QU Qiushi FANG Yebing ZHANG Hong Institute of Geographical Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China： 3.College of Territorial Resources and TourismAnhui Normal UniversityWuhuAnhui 241003China 4.College of Geospatial Information The PLA Information Engineering UniversityZhengzhou 450002China

This paper analyzes panel data from 2003–2012 to identify the factors driving the expansion of construction land in Ningbo city;it uses panel data,regional-level,and year-by-year regression *** results indicate the following：（1） For each 1% increase in the size of the economy,urban population,and industrial structure adjustment coefficient,the amount of construction land increased by 0.35%,0.52% and –1%,respectively.（2） The factors driving the expansion of urban construction land differed across *** more highly developed areas such as Yuyao,Cixi,Fenghua and the downtown area,population growth was the most obvious driving factor with coefficients of 4.880,1.383,3.036 and 0.583,respectively,in those ***,the impact of industrial structure adjustment was lower than that of population growth（with coefficients of 1.235,0.307,0.145 and –0.242）,while economic development was an increasingly insignificant factor（with coefficients of –0.302,0.071,0.037 and 0.297）.On the other hand,economic development was the most important factor for the expansion of construction land in relatively less developed areas such as Xiangshan and Ninghai counties with coefficients of 0.413 and 0.195,***,population growth（with coefficients of –0.538 and 0.132） and industrial structure adjustment（with coefficients of –0.097 and 0.067） were comparatively weaker driving factors.（3） The results of the year-by-year regression indicate the increased impact of economic development as a driving factor（from –1.531 in 2005 to 1.459 in 2012）.The influence of the population growth factor slowly declined（from 1.249 in 2005 to 0.044 in 2012） and from 2009 on was less influential than the economic development *** industrial structure coefficient remained negative and its influence diminished from year to year（from –5.312 in 2004 to –0.589 in 2012）.

关键词： expansion of construction land driving factors panel data model Ningbo City

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社会保障制度对中国城乡收入差距影响及对策研究

社会保障制度对中国城乡收入差距影响及对策研究

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作者：严斌山西财经大学

学位级别：硕士

长期以来,农村社会保障始终处于中国社会保障体系的边缘,广大农民一直游离于社会的保障网之外。突出表现在两个方面:(1)社会救济方面,城镇最低生活保障人数远远大于农村;(2)社会保险方面,城镇居民能够享受医疗保险、养老保险、失业保险... 详细信息

长期以来,农村社会保障始终处于中国社会保障体系的边缘,广大农民一直游离于社会的保障网之外。突出表现在两个方面:(1)社会救济方面,城镇最低生活保障人数远远大于农村;(2)社会保险方面,城镇居民能够享受医疗保险、养老保险、失业保险、工伤保险、生育保险等多种险种,而农村居民能够享受到医疗保险、养老保险等基本险种的人数寥寥无几,导致很多农民因病致贫、因病返贫。从这个角度来看,我国城乡社会保障差异与不断扩大的城乡收入差距密切相关。在理论上,城乡社会保障差异会拉大城乡收入差距。因此,准确测定社会保障制度对中国城乡收入差距的影响程度,将为政府部门完善社会保障制度、缩小城乡收入差距提供数据支持与理论依据。本文的创新点主要有两个:(1)在理论上的创新,国内外学者往往是从收入角度来研究城乡收入差距。即使考虑到了社会保障的因素,但分析只是单方面的,不够全面。而本文独辟蹊径,从社会保障即社会救济、社会保险、社会福利三方面入手,全面考查社会保障对城乡收入差距的影响,进一步完善了社会保障对城乡收入差距影响的理论。(2)在研究方法上的创新,由于农村社会保障起步晚,时间序列数据长度不足,所以国内外学者一般都停留在社会保障对城乡收入差距影响的定性分析上,本文采用现代经济计量方法中的panel datamodel,此模型的主要优点是:可以扩大样本量,解决了样本量小的缺陷,使模型保持足够多的自由度,并且在一定程度上克服了多重共线性。因此,所得回归结果比较可靠。利用panel data model把社会保障对城乡收入差距影响量化,为政府部门的决策提供了强有力的依据。 panel data model结果显示,社会保障制度对中国城乡收入差距影响显著,拉大了城乡收入差距。其中城乡养老保险、医疗保险、失业保险、最低社会保障的差异对中国城乡收入差距的影响非常显著,在很大程度上扩大了城乡收入差距。基于panel data M0del的回归结果,本文提出:政府应加大农村养老保险的政策支持力度,同时打破城乡界限,农村养老保险全国统筹;建立大病医疗保险制度,可以有效避免因病致贫的局面发生;对失地的失业农民建立失业保险,加强农民的职业技能培训,拓宽农民的就业渠道;针对农民外出务工人员,全面建立农民工工伤保险制度;尽快建立覆盖全国的农村低保管理和执行制度,由民政系统专项负责,确定县级政府为主要管理层,对低保所需资金实行专项转移支付,以保证资金来源的稳定性。

关键词：社会保障制城乡收入差距策研究 panel data model

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