Covid-19 attacks the body of purchasing and supply management: A medical check of the immune system

Much like the immune system of the body, the ‘immune system’ of purchasing and supply management (PSM) is also affected by the Covid-19 virus. Medicine must hinder the spread of the virus and outbreak of disease, just as PSM must prevent risk events and handle supply disruptions. The existing debate on supply resilience and robustness can be demonstrated using this medical analogy. The purpose of this article was to perform a medical check of the ‘PSM immune system’ to identify lessons and research gaps when confronted with a low-frequency-high-impact event such as the pandemic. As a provocative note, this article identifies research gaps in elements of the immune system of PSM (e.g., helper cells – consultancy support or memory cells – feedback loops). The results call for a more holistic debate on the immune system of PSM. Two approaches for research on ‘conventional’ or ‘alternative’ risk management schools of thought are presented as a basis for future discourse on how to improve the PSM immune system.     

乡村振兴视域下的禅城区生态建设发展路径研究

党的十九大提出必须树立和践行“绿水青山就是金山银山”的理念,生态文明建设功在当代、利在千秋。论文针对禅城区在实施乡村振兴政策背景下存在的问题进行具体的分析。希望通过对禅城区现状的分析,对未来政策的实施及乡村调研方向的确定提供一定的参考借鉴。     

Optimal Environmental Policy Differentials in Open Economies under Emissions Constraints

Is there a case for preferential treatment of the exposed sector in an economy when compliance to an aggregate emissions constraint induced by an international environmental agreement is mandatory? This question is being debated in many countries in the context of the implementation of the Kyoto Protocol. We address the issue in a general equilibrium framework and theoretically cover several market structures, including perfect competition, the large country case and oligopoly. We identify the conditions under which preferential treatment of the exposed sector is not warranted from the point of view of maximizing social welfare. In addition, we demonstrate that in the case of oligopoly, instituting a more stringent environmental policy on the exposed sector might be profit-enhancing for this sector. This finding lends theoretical support to a specific interpretation of the Porter hypothesis.     

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。     

退耕还林（草）生态补偿实施现状与问题分析——以甘肃省定西市安定区为例

为了建立合理的国家生态补偿机制，了解现阶段生态补偿中存在的问题，我们运用PRA（Participatory rule appraisal）即参与性农村评估和传统的问卷调查相结合的方法，通过对研究区内生态建设补偿措施实施过程中的现状研究、问题分析，发现本区在实施退耕还林（草）生态补偿中的主要问题是仍然没有有效解决生态补偿的三个基本问题：补偿主体、补偿强度、补偿资金来源。生态补偿处于初级阶段，没有形成制度化、法律化，有必要在政策、法律层面建立比较完善的生态补偿机制。     

构建自然与社会相协调的生态经济城市

城市走经济生态化发展之路,是人类文明进步的标志,是其自身发展的方向。近年来,我国很多城市都提出了建设生态经济城市。本文在结合我国国情的基础上,提出了建设生态经济城市的对策和设想,以期推动我国城市生态化和生态经济城市建设工作的开展。     

东西部地区之间公益林生态补偿负担与分摊

由于东部和西部地区之间自然和社会经济条件的差别，在公益林生态补偿问题上将会存在严重的地区之间生态建设责任与利益不平衡．因此需要建立地区之间的财政支付方式来平衡这种不公平状况．以利于公益林生态补偿制度的建立和完善。     

岩溶山地土地整理模式研究

西南岩溶山地是典型的脆弱生态环境,与经济发达地区相比,有其自身的土地资源特点、生态特点和社会特点。文章以此为基础,提出岩溶山地土地整理的原则、思路,认为岩溶山地的土地整理应从高标准基本农田建设、阶梯式还林退耕和辐射式生态重建、实行土地双轨制、直接对农户投资着手等,提出不同空间尺度如县市、乡镇、村组、农户土地整理的具体模式。非耕地资源开发是岩溶山地土地整理的重点。     

生态安全对城市生态系统的影响

生态安全是实现城市可持续发展的必要保障。本文通过对水资源安全、环境安全、物种安全、生物入侵这四个当前主要城市生态安全问题进行讨论,分析了它们对城市生态系统服务功能的影响,并相应提出了解决对策。     

论我国生态法律制度的创新与完善

生态法治建设不仅需要生态法理论的创新,更需要具体生态法律制度的健全和完善,这主要包括在法律上明确生态财产的所有权归属,依靠法治化的经济手段促进生态建设,完善生态建设的规划设计制度,科学设定和考核政府的生态义务,建立生态公益诉讼制度,健全生态法律责任制度。