A Common Pool Resource Game with Sequential Decisions and Experimental Evidence

We describe a common pool resource game in which players choose how much of the stock to extract in a sequential manner. There are two choices and one represents taking a larger proportion of the stock than the other. After a player makes a choice, the remaining stock grows at a constant rate. We consider a game with a finite number of alternating moves. It is shown that changes in the larger proportion of the stock that the players are allowed to take and the growth rate affect equilibrium, but have little effect on behavior in the laboratory. In addition to observing more cooperation than predicted, we observe that parameters that are strategically irrelevant affect behavior. The results of this research might help policy makers in developing adequate policies to prevent overexploitation of some natural renewable resources.     

人.自然.社会—生态悖论思考之一

本文提出了生态悖论的概念，分析其产生的原因、实质、解决的方法以及对生态学和生态经济学理论发展所起的作用。     

The Productivity of US States since 1880

This study uses state-level variation in labor productivity levels at twenty-year intervals between 1880 and 1980 to examine the relative importance of institutional and geographical influences in explaining observed and persistent differences in standards of living over time and across regions. Focusing on fundamental rather than proximate influences, we find that both institutional characteristics and some physical geography characteristics account for a high proportion of the differences in state productivity levels: states with navigable waterways, a large minerals endowment, and no slaves in 1860, on average, had higher labor productivity levels throughout the sample period. However, we find little support for two other influences that have previously received attention—climate and latitude.     

基于发展核电的生态经济价值及其伦理思考

发展核电、开发利用核能充满复杂而多层次的价值矛盾，在巨大的生态与经济利益和风险之间．核电对生态环境及人类安全的威胁问题倍受社会各界的关注．并由此引发了一系列价值难题和伦理争论，成为影响核电发展的关键。核电的安全、可持续发展不仅仅是技术问题，还涉及一系列的伦理问题，要保证核电可持续发展并有益于生态环境保护且不损害人类利益，不能犯“技术决定论”的错误．必须辅之以伦理之轨。伦理之轨通过深入核电发展链的各个环节．对核电发展进行伦理价值观的批判和引导．参与战略选择使之得以规约．并保障核电发展有益于人类合的目的性价值得以实现。     

中国节能减排工作面临的问题和解决的方法

国家“十一五”规划纲要明确提出中国单位GDP能耗在五年内降低20％；主要污染物排放总量减少10％的战略目标。目前，中国节能减排的任务还相当艰巨，应增加节能减排的资金投入，提高节能减排的激励和处罚标准。完善税收制度，遏制高耗能、高排放产业的项目发展。     

国内外水资源承载力的研究综述

随着能源危机的出现,资源环境问题逐渐成为各国经济学家和环境学家特别关注的问题.近年来,水资源短缺越来越成为各地经济发展的制约因素,面对这种情况,资源承载力概念的提出为资源与经济发展问题提供了一条新的研究途径.本文将国内外有关水资源承载力概念和量化方法的研究作一总体分析,结果表明:(1)国外对水资源承载力的研究较少,国内的研究大体可分为初始、发展、鼎盛和拓展四个阶段;(2)从横向比较来看,水资源承载力的研究在我国以近十年为盛.但研究多集中在资源学科领域和地理环境学科领域,角度大多是综合考虑多方面的影响因素,对一个地区的水资源承载力作出系统评价,并借助可持续发展的思想,应用已有的和创新的方法来解决水资源承载力的问题;(3)水资源承载力的研究在一定程度上是土地资源承载力研究的进步;(4)水资源承载力的研究较少考虑环境污染对水资源承载力以及整个社会系统的影响.在此基础上,本文最后对承载力在自然资源方面的研究作了小结和展望.     

试析森林生态环境价值计量研究中的几种干扰因素

本文就目前影响在林生态环境价值计量研究的几个干扰因素进行剖析。其中主要包括森林生态环境难以进入市场的原因；在林生态环境资源并不是都重要计量；森林生态环境的价值既是哲学的价值也是经济学上的价值；森林的生态环境转移与它的价值转移没有实现统一；森林生态环境价值计量使用的概念需要明确和统一；在林生态环境资源的监测和统计；影子价格理论在森林生态环境价值计量中应用的合理性；森林生态环境资源生产的投入产出进行过程等问题。这些问题如果得到及时解决，将有助于在林生态环境计量的进一步研究。     

生态需要与发展的理论研究

生态需要是人类三大需要的支柱之一，也是人类持久发展的动力源。正是人类的生态需要导致了人类发展观念的五种更新，促进人类需要结构的合理化，推动人类社会整体前进。     

Sharing a River

A group of agents located along a river have quasi-linear preferences over water and money. We ask how the water should be allocated and what money transfers should be performed. The core lower bounds require that no coalition should get less than the welfare it could achieve by using the water it controls. The aspiration upper bounds demand that no coalition enjoy a welfare higher than what it could achieve in the absence of the remaining agents. Exactly one welfare distribution satisfies the core lower bounds and the aspiration upper bounds: it is the marginal contribution vector corresponding to the ordering of the agents along the river. Journal of Economic Literature Classification Numbers: D62, C71.     

Coping with Technological Change: The Role of Ability in Making Inequality so Persistent

This study provides an explanation to the evolution of wage inequality over the last 30 years and supports this explanation with evidence. A faster rate of technological progress introduces new unknown elements at the workplace. The need to cope with the unknown accentuates the role of ability and thus increases wage inequality within and between education groups. Inasmuch as education is an irreversible investment project the rise in within group inequality BOOSTS UP the rise of between group inequality. Guided by this theory we turn to the PSID for evidence. Using parents' education to approximate child's ability we show the following set of results: (a) Controlling for education of the child, parents' education contributed much more in the 1980s to his wage growth than in the 1970s. (b) The correlation between the parents' and the child's education increases from the 1970s to the 1980s. (c) The return to college education for an individual with no ability rents did not change—it remains steady at the 23 percent. (d) Facts (a)–(c) CANNOT be attributed to the impact of parent's income. It is parents' education and not parents' income that is more relevant for son's economic outcomes in the 1980s.