碳市场:原理、实践和前景

全球气温变暖使得减少二氧化碳等温室气体的排放变得十分必要,由《京都议定书》催生出来的以交易温室气体排放权为主的国际碳市场就是解决这一问题的有益尝试.本文从经济理论出发,分析了国际碳市场的形成基础和运行条件,通过对该市场现状的研究,指出了其存在的问题和今后的发展前景,并对我国如何发展碳市场提出了相关建议.     

Credit policy and its heterogeneous effects on green innovations

We use the issuance of a new credit policy in China—the Green Credit Guideline (Guideline)—as a unique event and investigate its heterogenous effects on various green technology innovations for different firms in the world’s largest emerging economy. We find that all firms experience a significant increase in green technology innovations after the issuance of the Guideline. Companies with more considerable legitimacy deficiency in environmental compliance are more responsive to the Guideline. The larger increase in green technology innovations for companies with more legitimacy deficiency in environmental compliance is mainly driven by their higher productivity in applicational technology innovations after the Guideline was issued. All firms experience significant improvements in the effectiveness of investments, which is an important channel for increasing green technology innovations. Local legal system development and law enforcement efforts, firms’ political connections, and state ownership are essential mediating factors for green technology innovations, especially for firms with more legitimacy deficiency in environmental compliance. The Guideline positively affects both firm value and reputation, indicating that the new credit policy promotes impact investing.     

Market equilibrium in the presence of green consumers and responsible firms: A comparative statics analysis

This paper analyzes how the interaction between green consumers and responsible firms affects the market equilibrium. The main result is that a higher degree of responsibility of consumers and/or firms may both increase and decrease the total abatement and the social welfare. In general an increment in the degree of CSR of a firm entails an increase of its total clean-up and a reduction of the aggregate abatement of its rival. When the rival firm has a high degree of CSR this second effect is stronger than the first and total abatement falls down. At the same time, when the degree of consciousness of consumers and/or firms is very high, responsible firms overprovide environmental quality: in such case a further increment in the level of social responsibility of a market actor may trigger an increase of firms’ total clean-up but a reduction in social welfare.     

两种基于不同理论的绿色国民核算方法比较

本文主要介绍了两种基于不同理论的绿色国民核算方法--GREENSTAMP(GREEned National Statistical and Modelling Procedures)方法和GARP(Green Accounting Research Project)方法的发展和应用.GREENSTAMP方法是以可持续发展理论为基础的模型计量方法,目的在于发展一种理论上严密、实行上可行的衡量满足可持续环境标准的经济产出总量的方法.GARP方法是搜集能够用于估计绿色NNP或者能够用于解释标准国民账户(SNA)的卫星账户的信息的实证研究方法,目的在于给出一个经济活动净福利的准确计量值.通过比较发现,两种绿色国民核算方法均存在一定的优点和缺点.因此,本文提出了将以可持续发展为基础的方法和以福利为基础的方法相结合的两种潜在方法.     

Price/time/intellectual efficiency of procurement: Uncovering the related factors in Chinese public authorities

High efficiency is one of the important goals of public procurement (PP); however, research on PP efficiency is still not sufficient, especially in the context of developing countries. With a focus on the purchasing phase, this study measures three aspects of procurement efficiency of public authorities: price, time and intellectual efficiency. The relevant factors of these three aspects are explored and examined. 838 PP contracts in Chengdu city, China were collected in the first half of 2018 using a web crawler programme. Regression method is used to analyse the data. This study finds that the price efficiency of PP is negatively associated with the implementation of green public procurement (GPP) but is positively associated with the evaluation method (the weight of bidding price during evaluation) and the number of bidders. Time efficiency is negatively associated with GPP implementation. Intellectual efficiency is negatively associated with the size of the procurement. This study accomplishes the following: I. extends research to a still relatively unexplored context: developing countries; II. adds to the studies on public procurement efficiency; and III. investigates the influence of GPP implementation on PP efficiency in a developing country.     

绿色壁垒与应对策略

一些国家设置的绿色壁垒已经成为我国扩大出口的重要障碍。绿色壁垒具有两重性，既有推动世界经济实现绿色化的积极意义，又是一些发达国家以合理的籍口对不发达国家进行不合理贸易保护主义的措施。我国做为出口大国，应当正确面对绿色壁垒，切实从积极方面制定对策，以保证在国际经济发展绿色化的进程中，长期稳固的保持我国的出口优势。     

绿色贸易壁垒与我国外贸出口发展对策

绿色贸易壁垒也称环境贸易壁垒,属于非关税壁垒的一种。由于绿色贸易壁垒的内容具有歧视性,它通常是发达国家根据国内环保水平和标准设置,当然不利于发展中国家的出口贸易。绿色贸易壁垒不像配额、许可证等非关税壁垒,虽然限制贸易,却还有一定透明度,因此危害更大。文中分析了绿色贸易壁垒的本质、绿色贸易壁垒对我国出口贸易的影响并提出了相应的对策。     

造纸企业绿色信贷项目信用风险评估的绿色KMV模型研究

分析在造纸企业开展绿色信贷的可行性,然后以造纸企业的绿色信贷项目为研究对象,选取传统的信用风险度量模型——KMV模型,结合造纸企业生产过程中的特点构建绿色评价指标体系对模型中的资产价值进行改进,构建出绿色KMV模型。利用该模型对三家造纸企业的造纸项目面临的绿色信贷信用风险进行度量,针对度量的结果分析三家造纸企业的绿色信贷项目面临的信用风险情况。研究结果表明:商业银行从多角度对借贷企业或项目的绿色信贷信用风险进行评估,能够更准确地判断绿色信贷的信用风险状况,因此,商业银行在度量绿色信贷的信用风险时需要同时考虑企业或者项目的财务指标与非财务指标。     

Cost-effectiveness of alternative green payment policies for conservation technology adoption with heterogeneous land quality

This paper quantitatively analyses the cost‐effectiveness of alternative green payment policies designed to achieve a targeted level of pollution control by heterogeneous microunits. These green payment policies include cost‐share subsidies that share the fixed costs of adoption of a conservation technology and/or input reduction subsidies to reduce the use of a polluting input. The paper shows that unlike a pollution tax that achieves abatement through three mechanisms, a negative extensive margin effect, a negative intensive margin effect and a technology switching effect, a cost‐share subsidy and an input reduction subsidy are much more restricted in the types of incentives they provide for conservation of polluting inputs and adoption of a conservation technology to control pollution. Moreover, they may lead to varying levels of expansion of land under production. Costs of abatement with alternative policies and implications for production and government payments are compared using a simulation model for controlling drainage from irrigated cotton production in California, with drip irrigation as a conservation technology.     

The value of green walls to urban biodiversity

Despite increased interest in the implementation of green walls in urban areas and the recognised benefits of monetary valuation of ecosystem services, no studies have been undertaken to estimate the economic value of biodiversity they provide. The valuation of natural resources allows policy makers to justify resource allocation. Using the Southampton, UK, as a case study, this paper estimates the public’s perceived value of green walls to urban biodiversity, in the form of their willingness to pay (WTP). Estimates were derived using a random parameter model that accounted for socio-economic and attitudinal determinants of choice, using choice experiment data. Three green infrastructure policies were tested; two green wall designs (‘living wall’ and ‘green façade’) and an ‘alternative green policy’; and compared against ‘no green policy’. Results indicated a WTP associated with green infrastructure that increases biodiversity. Attitudinal characteristics such as knowledge of biodiversity and aesthetic opinion were significant, providing an indication of identifiable preferences between green policies and green wall designs. A higher level of utility was associated with the living wall, followed by the green façade. In both cases, the value of the green wall policies exceeds the estimated investment cost; so our results suggest that implementation would provide net economic benefits.