环境库兹涅茨曲线假说及其在中国的检验

经济与环境协调发展是我国经济发展中的重大课题。本文从环境库兹涅茨曲线假说出发,利用中国各个省市区1989～2004年数据建立面板数据模型,运用固定效应模型和随机效应模型对其进行估计,以此剖析我国经济增长与环境污染水平的演变规律。结果表明,环境库兹涅茨曲线假说在我国并不成立。因此,我国不能盲目重复发达国家"先污染,后治理"的传统模式,而应该走环境与经济持续协调发展的道路。     

The Optimal Timing of Adoption of a Green Technology

We study the optimal timing of adoption of a cleaner technology and its effects on the rate of growth of an economy in the context of an AK endogenous growth model. We show that the results depend upon the behavior of the marginal utility of environmental quality with respect to consumption. When it is increasing, we derive the capital level at the optimal timing of adoption. We show that this capital threshold is independent of the initial conditions on the stock of capital, implying that capital-poor countries tend to take longer to adopt. Also, country-specific characteristics, as the existence of high barriers to adoption, may lead to different capital thresholds for different countries. If the marginal utility of environmental quality decreases with consumption, a country should never delay adoption; the optimal policy is either to adopt immediately or, if adoption costs are “too high”, to never adopt. The policy implications of these results are discussed in the context of the international debate surrounding the environmental political agenda.      

Managing the international commons: Resource use and pollution control

The simultaneous management, in an international context, of free-access renewable resources and transboundary pollution, is examined in a dynamic game framework. First-best outcomes under international cooperation are determined and compared to noncooperative outcomes when countries follow linear Markov strategies. An international policy consisting of taxes on emissions and harvesting, with international redistribution of tax receipts, is used to achieve the cooperative solution. In addition, side payments may be required to prevent free riding and thus make the international policy implementable.Earlier versions of this paper were presented at the International WorkshopEconomic Aspects of International Water Resources Utilization in the Mediterranean Basin, Fondazione ENI Enrico Mattei, Milan, October 1993, and the Fifth Annual Conference of EAERE, Dublin, June 1994. I would like to thank Peter Berck, Charles Kolstad, Mordechai Schechter, and two anonymous referees for their valuable comments.     

Adoption of improved irrigation and drainage reduction technologies under limiting environmental conditions

Modern irrigation technologies have been suggested as a means of conserving scarce water and reducing environmental pollution caused by irrigated agriculture. This paper applies an economic model of technology selection that provides a general framework to analyzing adoption of irrigation technologies under various environmental conditions. Data from the San Joaquin Valley of California is used to verify the theoretical relationships. Results suggest key variables to be considered by policy makers concerned with adoption of modern irrigation technologies. Among these variables are crop prices, water technology costs, farm organization characteristics, and the environmental conditions of the farm or the field. Policy implications were discussed and analyzed.This research was conducted while the first author was a visiting scholar with the Dept. of Agricultural Economics, University of California, Davis, and USDA-ERS, USA.     

畜禽养殖业的环境影响及经济分析

畜禽业污染是我国农业面源污染的主要来源。本文估算了我国畜禽养殖业污染物排放量,阐述了畜禽养殖的环境影响,分析了畜禽污染内在的经济原因,并提出了防治畜禽污染的经济政策和措施,包括发展循环畜牧业、建设现代化的畜禽业物流体系、采纳各种环境经济手段、界定农村公共资源产权、实施优质畜禽产品品牌化战略、鼓励发展环保产业。     

基于农业非点源污染控制的流域综合管理对策

流域综合管理是从整体上控制农业非点源污染、协调流域上下游环境经济社会发展、实现流域农业可持续发展的有效途径。本文以福建九龙江流域为例，通过分析农业非点源污染产生的系统过程、分布特征、控制环节、制约因素、控制步骤等内容，探讨以不同等级汇水区为单位实行流域综合管理的必要性，阐述了组成流域综合管理体系的经济、环境、社会政策措施。     

论排污权交易

排污权交易是一种采用经济手段进行环境保护的手段,越来越多地受到了国际及国内社会的重视。本文对排污权交易进行了系统地介绍,论述了排污权交易的含义、性质、目的、特征,并在此基础上论述了排污权交易法律关系的构成。最后,对我国的排污权交易制度建立的障碍进行了分析,提出了构建我国排污权交易制度的若干设想。     

海洋环境污染损失的货币价值估算——以珠江入海口为例

近年海洋经济的高速发展及海洋资源的不合理开发利用，给广东省的海洋资源与环境带来了一系列问题，有必要对海洋环境污染损失的货币价值进行估算，以更好地进行环境的投入与产出比较，将环境保护纳入经济核算体系。通过比较并应用各种货币化计量方法，分别算出珠江入海口海域的海洋渔业价值、水质净化价值等，对珠江入海口海域的生态系统经济价值进行评估，在此基础上，结合计量模型对海洋环境污染损失进行货币化综合计量，得到海洋环境污染造成的经济损失量的保守估计范围为 87.4~106.9 亿元/年。最后，提出广东省应充分使用财政资金的金融手段，建立多渠道、多层次和全方位的海洋环境保护体系，最终达到保护海洋生态环境和资源的目的。     

加强环境审计促进生态建设

在人类经济高速发展创造着现代文明的同时，其生态环境却遭受着前所未有的蹂躏与破坏，环境污染日益加剧。如何从制造污染的企业外部和内部同时寻求治理监督环境污染的有力措施，这是本文的意义所在。本文从环境审计对生态建设的作用入手，分析现阶段我国环境问题和环境审计现状，并探讨环境审计的程序与方法，以促进我国的生态建设。     

保护环境的政府对策

环境问题是个世界性的问题,是人类生存的基本条件。在现实社会中,人类生存和产品的生产所面临的越来越紧迫的问题,正是环境问题。如水资源的污染、全球变暖、大气层上的臭氧层变薄、酸雨和地表臭氧增加(城市烟雾)等,使人类生存和社会经济发展面临着越来越大的危机。保护与治理环境的任务,历史地落到了政府的身上。政府保护与治理环境的手段主要有三种:一是开征污染税;二是政府管制;三是出售污染许可证。本文就是依据对这三个基本问题的探讨阐述基本的观点与看法。