Empirical analysis of Beijing forestry industrial structure and its competitiveness under the background of low carbon economy

With Shift-Share Method, the study implemented an empirical analysis of Beijing's forestry industrial structure and its regional competitiveness around China from 2002 to 2011.The results indicated that the development tendency of forestry industry structure will be gradually transferred from "primarysecondary –tertiary industry" into "tertiary-secondary-primary industry". As the study suggested that the basic position of the primary forestry industry should be strengthened and promoted, deep processing capacity and resources utilization of the secondary industry should be further developed, and the leading role of the tertiary industry should be further enhanced in accordance with the low carbon concept.

Optimizing forestry industrial structure based on the framework of rationalization,advancement and ecologicalization

Under the target of the sustainable development,optimization of forestry industrial structure contains rationalization and advancement of forestry industrial structure in the traditional sense,as well as ecologicalization of forestry industrial structure.The connotation of optimization of forestry industrial structure is analyzed at first,and then the paper chooses the typical evaluation indexes from the three sides of rationalization,advancement and ecologicalization to evaluate the current situation of the regional forestry industrial structure.With the aid of the theory of fuzzy mathematics and information entropy,the paper establishes a fuzzy evaluation model which is based on information entropy for optimization of forestry industrial structure,and the evaluation model is applied in the study for the current situation of forestry industrial structure from 2000 to 2006 in Hubei province.The results show that the grade of forestry industrial structure is bad basically during the research,of which the overall level of forestry industrial structure of Hubei province is poor,the degree of utilizing forest resource is lower,and ecological environment in the forest region has been damaged to some extent.On this basis,the author presents the countermeasure to promote the optimization of forestry industrial structure.

Eco-environmental Impact Assessment of the Change of Regional Industrial Structure and Regulative Measures

Acting as an important driving force for the change of the regional land use,the change of industrial structure also has some influences on the ecological environment.The assessment and mechanism analysis of these influences will be beneficial to the sustainable development of regional economy and the im- provement of relationships between man and earth.Taking Chuzhou City in Anhui Province as an example,on the basis of a qualitative analysis of the influence of the development of differ- ent industry on the regional ecological environment,this paper builds the influence factor of industrial structure on natural envi- ronment and the influence index of industrial structure on natural environment,makes a quantitative assessment of the change of the industrial structure and its comprehensive influences on the eco- logical environment in the Chuzhou City from 1974 to 1995. Studies show that,during the analysed period,Chuzhou City's industrial structure has changed markedly,having undergone two transformations.The influence of industrial structure on natural environment from 1974 to 1995 increased as a whole,while from 1996 to 2004,the influence of industrial structure on natural en- vironment decreased year-on-year.These changes indicate that the regional change of industrial structure results in better ecological effects.Finally,we propose appropriate regulatory measures ac- cording to our research results.

Grey Prediction Analysis on Forestry Industrial Structure of China

The grey relevance analysis is applied to study the 1996-2009 output value structure of China forestry system. Based on GM(1,1) model, information model is established to predict the forestry industrial structure of China in the next 10 years. Result shows that grey correlations between the three forestry industries and the forestry output value are 0.849 1, 0.731 1 and 0.821 3, respectively, with its order being secondary industry<tertiary industry<primary industry. Prediction result shows that forestry industry of China is in the middle stage of industrialization; and both secondary and tertiary industries will develop rapidly and become the leading industries.

Study on Changes of Industrial Structure and Its Ecological Environment Benefit in Shaanxi Province

[Objective] To reduce influences of adjustment of regional industrial structure on ecological environment,promote coordinated development of regional economy and ecological environment,and improve the relationship between human beings and natural environment. [Method]Based on the statistical data of Shaanxi Province during 1978- 2013,the ecological environmental impact index and effect index of industrial structure in Shaanxi Province were calculated,and then the ecological environment benefit of changes in industrial structure in Shaanxi Province from1978 to 2013 was assessed quantitatively. [Result]The impact of changes in industrial structure on ecological environment in Shaanxi Province was moderate,but later changes in industrial structure had greater influences on ecological environment than before. [Conclusion]Industrial structure in Shaanxi Province should be optimized further to ensure the healthy development of ecological environment.

Quantitative analysis on the contribution of industrial structure change to sustainable development: a case study of Fujian Province

Development and sustainability are the core connotation of sustainable development. Sustainability of economic development and the provision capability of resources and environment are two aspects of sustainable development. The former ones are the foundation of the latter ones. Industrial structure has a close relationship with sustainable development. The optimization of industrial structure is the important base for the sustainable development of modern economy and also the important ways of the sustainable utilization of resources and environment. The intensive growth effect of industrial structure change has the meaning of sustainable development. This paper reviews and explains the theory on the contribution of industrial structure change to sustainable development, builds the calculation model through introducing the coeff icient of industrial structure change, makes an empirical study on the contribution of industrial structure change to sustainable development in Fujian, and puts forward ways and policies of optimizing industrial structure both among industries and inside the industry in the process of industrial structure change.

Research on the Variability and Impact of Industrial Organizational Structure under the Background of Internet Plus Era

This paper determines the basic principles and compares the effects of industrial structure changes through hierarchical analysis of industrial organizational structure on five empirical objects according to a combination of theoretical and empirical analysis and also a combination of macroeconomics and econometrics.This will provide three necessary conditions and four basic conditions for the change of industrial structure to improve the entity economy based on industrial upgradation.

CO2 emissions and their bearing on China＇s economic development： the long view

Greenhouse-gas (GHG) emissions in China have aroused much interest, and not least in recent evidence of their reduction. Our intent is to place that reduction in a larger context, that of the process of industrialization. A lengthy time perspective is combined with a cross-sectional approach-China plus five other countries-and addressed through two general models. The findings are salutary. First, they suggest that a diversified economic structure is consistent with diminished intensity in energy use. Secondly, and the obverse of the first, they imply that a diversified energy structure promotes reductions in CO2 emissions. Finally, one is led inevitably to the conclusion that, together, the findings point to a path for countries to transform their economies while at the same time undertaking to drastically moderate their energy use, switching from a pattern of heavy carbon emissions to one in which lighter carbon emissions prevail. The implications of such findings for environmental management are enormous.

Industrial Structural Changes in Hong Kong,China under One Country,Two Systems Framework

Hong Kong has undergone substantial economic transformations and developed into a sophisticated busi- ness and financial center in the Asia-Pacific region, since the return of sovereignty to China as a Special Administrative Region under the One Country Two Systems （OCTS） in 1997. This paper discusses and analyzes the industrial struc- tural changes of Hong Kong in recent decades as well as its future challenges and opportunities, The data and finding reveal that even though Hong Kong will face fierce competition from the Mainland＇s cities as the rise of China, the important role as a bridge between China and the rest of the world wilt brace Hong Kong itself under the OCTS for developing into a service hub for business and trade in the Asia-Pacific region.

Empirical Analysis of Economic Growth in Sichuan Province

For a long time, the factors influencing a regional economic growth are mainly workforce, capital and scientific and technological progress. But with the further promotion of China＇s reform and opening-up and intensification of the further improvement degree, the main factors influencing a regional economic growth constantly change. This paper utilizes the relevant data of Sichuan to set up the econometric model and quantitatively studies the factors influencing economic growth of Sichuan. Through comparing the greatness that each factor influences the economic growth of Sichuan, the paper takes system changes as leading factor to influence the economic growth during 1984-2003 of Sichuan. At the same time, the upgrading of industrial structure will be a core of economic growth in the future, and the scientific and technological progress is the potential force of economic growth.

财政分权与经济结构转型——一个产业结构变迁的视角

本文构建了一个包含中央政府和地方政府行为的产业结构变迁模型,理论研究发现,财政分权通过影响财政支出在中央政府和地方政府之间的配置来影响全要素生产率,并进一步影响产业结构变迁,促进产业升级。财政分权对产业结构变迁的影响与财政分权水平,以及非农业部门中央政府财政支出和地方政府财政支出的产出弹性有关,经济中可能存在最优的财政分权可以极小化农业部门的劳动力份额。本文通过省级面板数据模型考察财政分权对我国产业结构变迁的影响。在此基础上,我们运用省内县级政府的税收分权指标,以及双重差分方法做了稳健性检验。实证研究发现,财政分权程度越高,农业部门劳动力份额越低,这说明财政分权有利于我国产业结构升级,且这一结论是稳健的。

数字乡村建设对林业绿色全要素生产率的影响

选取2012—2022年中国30个省份的面板数据,在定量测算林业绿色全要素生产率和数字乡村建设水平的基础上,使用双重机器学习模型进行估计,实证检验数字乡村建设对林业绿色全要素生产率的影响。研究发现:数字乡村建设对林业绿色全要素生产率具有显著促进作用,并且数字乡村建设能够通过优化林业产业结构从而提升林业绿色全要素生产率。异质性研究发现,东部地区数字乡村建设提升林业绿色全要素生产率的效应相较于中西部地区更为显著,并且数字基础设施和数字服务水平是提升林业绿色全要素生产率的关键因素。因此,政府应因地制宜地推进数字乡村建设,加快与林业产业的深度融合,不断优化林业产业结构,助力林业绿色全要素生产率的提升。

畜牧产业结构变动对生猪价格的影响

数字经济时代下,畜牧产业作为发展现代农业、促进农业经济增长的关键驱动力,对稳定我国生猪价格具有重要作用。文章基于2011年2月—2023年1月共计144个月的生猪价格数据,利用VAR模型,实证检验畜牧产业结构变动对生猪价格的影响。结果显示:畜牧产业结构变动是引起生猪价格变化的格兰杰原因;生猪价格受畜牧产业结构变动的滞后影响;生猪价格在前两期受畜牧产业结构变动的负向冲击,从第3期开始受畜牧产业结构变动的正向影响,响应程度在第12期达到峰值,在第24期影响逐渐消失;畜牧产业结构变动对生猪价格的冲击响应周期约为2年,直至第2年仍存在10.85%的贡献率。研究表明,畜牧产业结构变动对生猪价格具有正向影响作用。

徐州市人口年龄结构变化对产业结构优化影响的研究

产业结构的演变和人口年龄结构的变迁过程并非相互独立。文章结合徐州当地的实际情况,从供给和消费的角度探讨徐州市人口年龄结构的变化对产业结构优化升级所产生的影响。通过系统的研究,致力于促进徐州当地产业在优化和发展过程中,采取积极有效的措施,减少人口年龄结构对其的负面影响,强化人口年龄结构对其的正面影响。

数字乡村建设对浙江省山区26县林业产业发展升级的影响

[目的]在加快推进数字经济与实体经济深度融合赋能现代产业体系的背景下,研究数字乡村建设对林业产业发展升级的影响机制,为森林资源富集地区制定数字赋能林业产业高质量发展的政策策略提供科学依据。[方法]基于浙江省山区26县2001—2021年面板数据,构建县域数字乡村建设水平评价指标体系测度数字乡村建设水平,采用双向固定效应模型、中介效应模型、门槛效应模型和空间杜宾模型等量化分析数字乡村建设对林业产业发展升级的影响及其作用机制。[结果]1) 2001—2021年浙江省山区26县数字乡村建设水平呈增长态势,其中跨越发展县的数字乡村建设水平高于生态发展县;林业产业发展规模不断扩大,但区域间差异明显且两极分化较严重;林业产业结构合理化程度小幅上升,林业产业结构高级化程度波动上升。2)数字乡村建设能够促进林业产业发展升级,即数字乡村建设对林业产业发展规模、林业产业结构合理化和林业产业高级化均产生显著正向影响;数字乡村建设对林业产业结构合理化和林业产业结构高级化的影响存在门槛效应。3)数字乡村建设能够通过技术赋能、劳动力赋能和治理赋能等路径促进林业产业发展升级。4)数字乡村建设对林业产业发展升级存在正向空间溢出效应;数字乡村建设能够显著促进本地区林业产业发展规模、林业产业结构合理化和林业产业结构高级化,同时对邻近地区的林业产业发展规模、林业产业结构合理化和林业产业结构高级化产生显著正向影响。[结论]2001—2021年浙江省山区26县数字乡村建设水平不断提高,林业产业发展升级状况向好,技术应用水平、人力资本水平和森林生态产品价值实现效率等因素在不同程度上影响数字乡村建设、促进林业产业发展。各县域单元需加快推进数字乡村建设,从创新技术运用、大力引进人才、提升林业部门生态治理能力和林业企业经营管理水平以及培育林业龙头企业并发挥辐射带动作用等方面发力,因地制宜,分类施策,推动山区县林业产业发展升级,打造数字赋能现代林业产业高质量发展的示范样板。

数字新质生产力与经济增长动能转换:理论和实证

数字新质生产力“以新促质”,锚定新发展理念与高质量发展目标,对推动经济增长动能转换具有重要意义。基于2013—2022年286个地级及以上城市面板数据,通过多种计量模型,实证检验数字新质生产力对经济增长动能转换的影响效应。研究表明:数字新质生产力对于经济增长动能转换具有积极推动作用,且该推动作用在资源型城市以及中心城市更为显著。机制检验结果显示,数字新质生产力通过推动产业结构变迁和提升对外贸易水平两条机制渠道促进经济增长动能转换。调节效应检验结果证实,营商环境在数字新质生产力推动经济增长动能转换过程中发挥正向调节作用。门限效应分析表明,人力资本在数字新质生产力对经济增长动能转换的影响效应存在显著非线性门限效应。基于此,提出培育数字新质生产力,激发全新经济增长点,调整经济结构,加快新旧动能转换,优化营商环境布局,构建经济动能新引擎的政策建议,为培育数字新质生产力,赋能经济增长动能转换提供有益借鉴。

林业经济发展现状及优化路径研究

森林是陆地生态系统的主体,是人类的无价之宝,是永不贬值的财富。森林对维护生态安全,应对气候变化,支撑可持续发展具有十分重要的意义和作用。进入新时期,在国家大力推进绿色转型发展的背景下,林业经济发展面临的产业结构不优、效益不高等问题日益凸显。如何通过优化调整林业产业结构,促进土地利用效率的提高,从而增加林农的收入,促进产业结构的调整,促进地方特色产业发展,成为当前需要深入研究的重要问题。

产业结构变迁下传统村落文化空间生产演化研究——以陕西袁家村为例

传统村落文化空间是乡村文化振兴的关键载体。以陕西袁家村为例,结合空间生产理论探析乡村在传统农业村落、现代工业村落、乡村旅游村落3个产业变迁过程中文化空间生产的演化逻辑。结果表明:袁家村物质文化空间经历了从传统农耕文化到乡镇工业文化,再到乡村旅游文化的转变;精神文化空间由乡土观念和小农意识逐渐发展为集体信仰和组织观念,再到强化道德教育和乡风文明建设;制度文化空间从血缘宗族制度下的礼俗秩序转变为集体主义规范兴起下的制度规范与业缘交往,最终实现了多元主体融合下的三治合一。文化空间的功能价值从最初的农业生产和生活功能拓展为生产、生活与旅游功能并重。这些演化过程是内外部经济资本积累、构建者主导的政治权力以及集体主义导向的社会关系相互交织、相互影响的结果,共同决定了袁家村文化空间的形态和结构。

基于乙二醇链段构象变化的涤纶工业丝聚集态结构研究

在150℃烘箱中对3种不同纺丝工艺即常规工艺(A)、提高喷丝头拉伸倍数(B)、提高喷丝头拉伸倍数并降低第二级拉伸倍数(C)制备的涤纶工业丝试样F-A、F-B、F-C进行30~120 d热处理,研究纺丝工艺及热处理时间对涤纶工业丝乙二醇链段构象的影响,以此考察涤纶工业丝的聚集态结构变化。结果表明:提高喷丝头拉伸倍数促使纤维中乙二醇链段的旁式构象向反式构象转变,降低第二级拉伸倍数不足以破坏纤维的原有结构;喷丝头拉伸倍数从109.62提高到120.00,试样的乙二醇链段反式构象相对含量(X_(t))从23.37%增加至29.00%,结晶度(X_(c))从43.04%降至42.57%;第二级拉伸倍数从3.389降至3.200,试样的X_(t)从29.00%增加至41.73%,X_(c)从42.57%提高至45.44%;对于F-A与F-C试样,随着热处理时间的延长,试样的X_(t)及X_(c)均先增加后下降,均在热处理90 d时出现最大值;而对于F-B试样,随着热处理时间的延长,试样的X_(t)及X_(c)均逐渐增大,在热处理120 d时分别达到64.90%与63.36%。

The Effect of Industrial Structure Change on Carbon Dioxide Emissions: A Cross-Country Panel Analysis

Reduction of carbon dioxide(CO2)emissions is one of the biggest challenges for global sustainable development,in which economic growth characterized by industrialization plays a formidable role.We innovatively adopted the input and output(I-O)table of 41 countries released by World I-O Database to determine the industrial structure change and analyze its impact on CO2 emission evolution by developing a cross-country panel model.The empirical results show that industrial structure change has a significantly negative effect on CO2 emissions;to be specific,0.1 unit increase in the linkage of manufacturing sector and service sector will lead to a decrease of 0.94 metric tons per capita CO2 emissions,indicating that upgrading industrial structure contributes to carbon mitigation and sustainable development.Further,urbanization,technology and trade openness have significantly negative impact on CO2 emissions,while economy growth and energy use take positive impacts.In particular,a 1%increase in per capita income will contribute to an increase of 8.6 metric tons per capita CO2 emissions.However,the effect of industrial structure on environment degradation is moderated by technology level.These findings fill the gaps of previous literature and provide valuable references for effective policies to mitigate CO2 emissions and achieve sustainable development.