国际碳交易机制复杂化及中国应对

目前,国际碳交易机制网络群体呈现复杂化态势,碳交易机制复合体、碳交易机制集群与碳交易机制联结相互渗透,同时其内部也进行着良性协同、建设性合作与功能性竞争的有序互动。在无政府状态、利益认知差异以及全球气候治理体系转型等普遍性因素影响下,国际碳交易机制复杂化的成因有着自身的特殊性,是其发展进程中的必然产物。另外,国际碳交易机制间的互动具有双重效应,其协同合作将会带来经济发展与气候保护的双赢结果,而如果互相掣肘则会增加碳交易成本甚至造成负减排。因此,中国在复杂化的国际碳交易机制中推进新型碳外交并实现碳中和目标,既需要充分发挥自身团结国际力量的优势以及国内和国际双循环新发展格局的核心作用,促进碳交易机制间的协同与衔接,又要积极践行《巴黎协定》关于碳交易机制整合的倡议,与各国及相关国际组织共同将碳交易机制整合的规范推广到整个国际社会以及其他议题的全球治理之中。     

发展中国家应对美国碳关税策略分析

美国众议院2009年6月底通过了《美国清洁能源安全法案》。法案允许美国对来自没有采取与美国相当的温室气体减排措施国家的高能耗、初级进口产品征收"碳关税"。这对于经济技术水平明显落后于发达国家的发展中国家而言,无疑又是一种新的贸易壁垒。对此,发展中国家应该积极行动,通过建立南北自由贸易区、推动在联合国框架内的气候谈判以及积极参与碳标准制定等方式积极寻求对美国"碳关税"壁垒的突破。在减排与贸易、环保与经济增长间寻得平衡发展。     

加拿大魁北克省与英属哥伦比亚省碳税立法比较研究

为了有效应对气候变化,加拿大魁北克省和英属哥伦比亚省分别于2007年和2008年开征碳税。由于两省的温室气体排放状况、排放构成及减排目标不尽相同,在碳税的征收目的、收入用途、征收模式、纳税人、税目、税率和税收减免等方面的设计相差甚远。得益于碳税的经济激励效果,两省的温室气体减排都取得了一定成效。对两省的碳税制度进行系统比较,可以为我国的碳税立法提供有益的参考。     

自制炸药包壳的爆炸规律研究

目的探讨同种材质的包壳受到不同量的炸药爆炸后的物理损坏程度及分布规律。方法采用相同材质包壳、不同质量的硝铵（密度0.6g/cm3）若干份进行实验,根据炸药质量和密闭塑料瓶包壳体积的比值（相对密度）建立横坐标,不同直径碎片质量为纵坐标做出工作曲线。结果在固定体积下的特定塑料包壳中,10g~30g硝铵炸药爆炸后,包壳碎片质量与炸药量存在一定的规律。结论本方法可用于推算一定范围内自制炸药爆炸的药量。     

Dynamics of Ninhydrin‐Reactive Nitrogen and pH in Gravesoil During the Extended Postmortem Interval

Estimating the postmortem interval of skeletal remains is difficult, as few tools exist to do so. To address this problem, we conducted a field experiment to measure the chemistry of swine (Sus scrofa domesticus Linnaeus) gravesoil after 1 year and 3 years postmortem. Carcasses were placed on the soil surface of a pasture during June in a cold (Dfa) climate. Significant (p < 0.05) increases in ninhydrin‐reactive nitrogen, pH, total nitrogen, and nitrate in gravesoil were detected 1 year postmortem. Significant differences in gravesoil chemistry were not detected 3 years postmortem. These observations coincided with gaps in plant growth 1 year postmortem and the development of lush vegetation 3 years postmortem. We conclude that these phenomena can be used to assist the decision‐making process regarding the allocation of resources during the early stages of a death investigation.     

The Effects of Polymer Pigmentation on Fingermark Development Techniques

The effectiveness of latent fingerprint development techniques is heavily influenced by the physical and chemical properties of the deposition surface. The use of powder suspensions is increasing for development of prints on a range of surfaces. We demonstrate that carbon powder suspension development on polymers is detrimentally affected by the presence of common white pigment, titanium dioxide. Scanning electron microscopy demonstrates that patches of the compound are clearly associated with increased levels of powder adhesion. Substrates with nonlocalized titanium dioxide content also exhibit increased levels of carbon powder staining on a surface‐wide basis. Secondary ion mass spectrometry and complementary techniques demonstrate the importance of levels of the pigment within the top 30 nm. The association is independent of fingermark deposition and may be related to surface energy variation. The detrimental effect of the pigment is not observed with small‐particle reagent (MoS₂ SPR) or cyanoacrylate (superglue) fuming techniques that exploit different development mechanisms.     

Climate change: Double-edged sword for African trade and development

Abstract

African governments face increasing pressure from major export destinations, primarily former colonial and slave-owning countries, to be climate change compliant. This will certainly be on display at the upcoming December 2009 United Nations Climate Change Conference in Copenhagen, which will seek to strengthen climate change rules agreed on in Kyoto, Japan, in 1997, and adopt new protocols on global climate change regulation. Climate change is a double-edged sword: on one side it is hitting Africa's agricultural sector with increased droughts, floods, extreme frost and wildfires; and on the other, African governments are being forced to respond to stringent regulatory regimes imposed by international export destinations. Currently, the per capita greenhouse gas emissions from the highly industrialised nations – the North – is estimated to be four times that of Africa and the rest of the developing world. Twin research questions were investigated in this article: (1) to what extent does climate change impact on African trade and development, and (2) how can African governments stay on a path of sustained trade and development in this era of climate change? The article argues that Africa's survival in these times of climate change compliance rests on a shift to greater intra-African trade, as individual nations move towards cleaner and more organic technologies to become full-fledged partners in the international climate change regulatory regime.     

Subprime catalyst: Financial regulatory reform and the strengthening of US carbon market governance

The 2008 financial crisis has had an important, but neglected, impact on carbon market governance in the United States. It acted as a catalyst for the emergence of a domestic coalition that drew upon the crisis experience to demand stronger regulation over carbon markets. The influence of this coalition was seen first in the changing content of draft climate change bills between 2008 and 2010. But the coalition's more lasting legacy was its role in shaping the content of, and supporting, the passage of the Wall Street Reform and Consumer Protection Act (the Dodd–Frank bill) in July 2010. Although that bill was aimed primarily at bolstering financial stability, its derivatives provisions strengthened carbon market regulation in significant ways. This policy episode demonstrates new patterns of coalition building in carbon market politics as well as the growing links between climate governance and financial regulatory politics. At the same time, the significance of these developments should not be overstated because of various limitations in the content and implementation of the Dodd–Frank bill, as well as the waning support for carbon markets more generally within the US since the bill's passage.     

国内外碳足迹研究进展述评

在全球气候变化的宏观语境下,“碳足迹”成为公共生活领域中的一个热门术语.然而,学术界对碳足迹的概念内涵、测算方法、衡量单位及适用范围等的理解尚未形成统一意见.本文首先对国内外学术界关于碳足迹的概念内涵进行梳理和述评,从终端消费和全生命周期两个方面界定碳足迹,以此与“生态足迹”、“碳排放”等术语相区别;其次,从产品、家庭、企业及类似组织、城市和区域、国家和地区等不同尺度对碳足迹的研究进行综述,比较了碳足迹测度的不同方法和标准,发现“自下而上”的生命周期评价和“自上而下”的投入产出分析方法适用于不同的研究尺度;最后,对进一步的研究方向做了展望,指出应尽快明确碳足迹的概念内涵,避免泛化和滥用,并尝试构建一种综合性的碳足迹测度方法.     

我国省域低碳经济发展水平比较研究

低碳经济是气候变化背景下人类的必然选择,也是我国实现绿色发展的重要途径。依据我国30个省区2001—2011年相关平均数据,运用层次分析法,从低碳环境、低碳产业、低碳效率和低碳创新四个层面对我国省域低碳经济发展水平进行综合评价可以发现,我国整体低碳经济发展水平较低,且区域差异明显。长期以来,粗放型经济增长对我国的生态环境造成极大破坏;在空间上,我国东南沿海地区低碳经济发展水平相对较高,中西部地区偏低。促进我国低碳经济的发展,必须提升森林面积和质量,改善能源和产业结构,发展节能减排技术。