碳税对中国产业与地区竞争力的影响：基于CO2排放责任的视角

基于2007年中国区域间投入产出表,本文从生产者责任与消费者责任两个方面考察了中国不同地区、不同产业的CO2排放情况,并分析了两方面征收碳税对各地区以及相关产业竞争力影响的差异。研究表明,中国也存在着从东南沿海等相对发达地区向西北、东北等欠发达地区的“碳泄漏”现象。因此,与从生产者责任方征税相比,从消费者责任方征收碳税,可以较大幅度地减轻对西北、东北等欠发达地区及相关产业竞争力带来的负面影响,同时又不致使东南沿海经济发达地区及相关产业的额外负担上升幅度过大。本研究的政策启示是,在进行区域与产业CO2排放责任分担时,不能仅仅停留在生产者责任方面,需要同时引入消费者的责任,这既符合责任分担的公平性要求,也能够协调各方利益,达到最佳减排效果。     

碳纤维加固技术在实际工程中的应用

由于具有自重轻、强度高、工期短、造价低、施工简便等优点,碳纤维复合材料(CFRP)在建筑梁、板、柱、墙等的加固工程中得到广泛应用.文中在对长春市生物制品研究所制药车间因增加设备荷载进行评估的基础上,提出了采用碳纤维布加固技术对其而需对框架梁进行加宽加固,以满足该车间要求的使用功能的需要.其加固工艺可为同类型框架梁加固提供参考.     

Carbon taxes and the double dividend hypothesis in a recursive-dynamic CGE model for Spain

A carbon tax is potentially a policy that can reduce CO₂ emissions and mitigate climate risks, at lowest economy-wide costs. We develop a dynamic CGE model for Spain to assess the economic and environmental effects of a carbon tax, and test the double dividend (DD) hypothesis. We simulate the impact of three carbon taxes: €10, €20 and €30 per ton of CO₂. For each tax, four ‘revenue recycling’ scenarios are examined: a reduction of taxes on capital, on labor, on value-added tax, and a scenario in which revenues are not recycled. We find a DD for taxes of €10/ton and lower, within five to seven years of implementation. We estimate an annual CO₂ emissions reduction of around 10% with this tax. Under some circumstances, the DD can be achieved for a tax of €20/ton. In any case, recycling revenues to cut pre-existing taxes reduces costs of imposing carbon taxes.     

Environmental regulations in private and mixed duopolies: Taxes on emissions versus green R&D subsidies

In this article, we compare two kinds of environmental regulations—emissions taxes and green R&D subsidies—in private and mixed-duopoly markets in the presence of R&D spillovers. We show that a green R&D subsidy is better (worse) than an emissions tax when the green R&D is efficient (inefficient), irrespective of R&D spillovers, whereas the existence of a publicly owned firm encourages the government to adopt a subsidy policy. We also show that the optimal policy choice depends on R&D efficiency and spillovers. In particular, when green R&D is inefficient and the spillover rate is low (high), the government should choose an emissions tax and (not) privatize the state-owned firm. When green R&D is efficient, however, an R&D subsidy is better, but a privatization policy is not desirable for society, irrespective of spillovers.     

COPENHAGEN,CANCÚN AND THE LIMITS OF GLOBAL WELFARE ECONOMICS

The rise of a global welfare economics directed at the environmental challenges facing our planet represents a new policy phenomenon. This paper examines the most ambitious attempt so far to put such economics into practice via the Kyoto Protocol and more specifically the Clean Development Mechanism of the Protocol. The Copenhagen and Cancún climate change conferences have put an end to hopes of the Protocol serving as an effective tool in the mitigation of global warming. This failure of the new global welfare economics is the result of flawed principles, not just defective implementation.     

低碳农业：金融支农的新视角

温室气体的增加、极端气候和自然灾害的频繁出现对农业发展的不利影响越来越凸显出来,农业作为温室气体的第二大重要排放源,必须实现从高碳向低碳的转变。当前在农村金融的发展中对低碳农业的认识还刚刚起步,应从政策导向、转变观念、金融产品创新等方面着手,把低碳农业作为金融支农的新视角。     

Structural production layer decomposition: a new method to measure differences between MRIO databases for footprint assessments

Recent empirical assessments revealed that footprint indicators calculated with various multi-regional input–output (MRIO) databases deliver deviating results. In this paper, we propose a new method, called structural production layer decomposition (SPLD), which complements existing structural decomposition approaches. SPLD enables differentiating between effects stemming from specific parts in the technology matrix, e.g. trade blocks vs. domestic blocks, while still allowing to link the various effects to the total region footprint. Using the carbon footprint of the EU-28 in 2011 as an example, we analyse the differences between EXIOBASE, Eora, GTAP and WIOD. Identical environmental data are used across all MRIO databases. In all model comparisons, variations in domestic blocks have a more significant impact on the carbon footprint than variations in trade blocks. The results provide a wealth of information for MRIO developers and are relevant for policy makers designing climate policy measures targeted to specific stages along product supply chains.     

Can China reduce the carbon emissions of its manufacturing exports by moving up the global value chain?

This study analyses whether embedding in the global value chain has an impact on the carbon emissions of China’s exports. We develop a carbon decomposition model and use panel data for 14 manufacturing industries in China from 1995 to 2009 to empirically analyse the impact of China’s exports on carbon emissions. Our results show that the GVC effect on China’s carbon emissions embodied in manufacturing exports outweighs the scale, composition and technique effects.     

改进的区域旅游业碳足迹测度模型及张家界实证研究

将成分法和生命周期法结合运用,建立起区域旅游业温室气体排放的测算模型,将区域旅游业的碳足迹分为旅游开发过程中的碳足迹,旅游消费过程中的旅游交通碳足迹、旅游餐饮碳足迹、旅游购物碳足迹、旅游住宿碳足迹、旅游游览碳足迹、旅游娱乐碳足迹,旅游废弃物处理过程中的旅游用水碳足迹和旅游固体废弃物碳足迹,并对张家界旅游业碳足迹进行实证分析。结果表明,张家界的旅游业属于低碳旅游业。     

Consequences of carbon offset payments for the global forest sector

Long-term effects of policies to induce carbon storage in forests were projected with the Global Forest Products Model. Offset payments for carbon sequestered in forest biomass of $15–$50/t CO₂e applied in all countries increased CO₂ sequestration in world forests by 5–14 billion tons from 2009 to 2030. Limiting implementation to developed countries exported environmental damage from North to South, as developing countries harvested more, decreasing their stored CO₂e. Substantially more CO₂e was sequestered by allocating a given budget to all countries rather than to developed countries only. As offset payments increased wood prices relatively more than they decreased production, timber revenues generally increased. In the few countries with timber revenues losses they were more than compensated by the offset payments.