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。     

Technological substitution in the United States pulp and paper industry: The sulfate pulping process

This paper presents an econometric analysis of the diffusion of the sulfate pulping process throughout the U.S. pulp and paper industry. A dynamic equilibrium, Gompertz diffusion function is employed to derive a multivariate estimation model which incorporates more information than the traditional approach of estimating the growth rate function alone. The empirical results suggest that the econometric approach provides a useful integration of the technological diffusion process and the comparative static theory of demand. The sulfate pulping process is projected to continue capturing market share at a relatively rapid rate, and could account for 90% or more of total U.S. woodpulp production by the year 2000.     

The new logic of Japan's young generations

Through daily use of computer games and advanced cartoonized learning, the lower teen generation in Japan has developed an unprecedented ability for instantaneous contextual gestalt-based decision making and high-speed multidimensional simultaneous thinking. This is a radical departure from the sequential logic of older generations. This is a conclusion we can reach after examining the voluminous data available from a new research institute in Japan. The data also indicate that the young adult generation has developed unique strategies of life, which are fascinating but difficult to understand in the framework of our traditional logic but make sense as a transition to the logic of the lower teen generation.     

云南长防林体系建设中几个问题的探讨

本文就云南省长防林体系建设中存在的认识问题,指导思想、政策、资金投入及有关技术问题,进行分析。提出相应的对策和意见。     

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。     

中国新型工业化与资源环境管理

新型工业化强调通过现代技术不断深度开发和广度拓展自然资源在工业生产过程中的利用价值,实现资源利用的高效率和可持续利用,使中国工业从资源消耗型转变为资源节约型和技术导向型."环境成本内化"发展模式的构建是新型工业化的内在要求,它具体包括:建立"成本内化"的科技创新体系;大力发展循环经济,制定和完善促进循环经济发展的法律法规体系;探索新的城市发展模式,强化城市区域生态建设和环境治理.     

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。     

路径依赖的作用:家庭联产承包责任制的建立与演进

人地比例、耕作技术、土地产权制度之间的互动循环导致了中国历史时期土地产权制度演进中路径依赖的形成。中国目前人口与资源（土地）之间的紧张关系就是历史时期土地产权制度演进的结果，这一约束条件决定了中国土地产权制度只能是朝着更加周密细致地保证农民土地长期使用权与收益权的方向演进。从公社一级到三级所有、大队为基础，到三级所有、队为基础，再到家庭联产承包责任制的建立，直至承包期限由短期变为长期，由15年变为30年。这一步步的演进都是朝着保证农民土地长期使用权与收益权的方向回归，显现出制度变迁过程中路径依赖的作用。由于历史时期土地产权制度演进的影响，家庭联产承包责任制完善的方向应该是土地国家终级所有的前提下，强化农民现有土地长期使用权，并通过法律手段保证土地使用权的转让。