基于生态适宜性评价的耕地生态系统服务价值变化研究 ——以山东省章丘市为例

生态系统服务价值评估是当前生态经济学和环境经济学的研究热点和焦点.耕地生态适宜性评价是对影响耕地各种条件的综合评估,其结果能从一定程度上反映耕地的质量状况.该文首先选取了影响章丘市耕地生态适宜性的因子,在对研究区域进行生态适宜性评价的基础上,以生态适宜性综合指数为修正因子对耕地生态系统服务价值进行修正,使得耕地生态系统服务价值因为其生态适宜性的不同产生了区别.研究发现,章丘市的耕地生态系统服务价值从南往北逐步减少,耕地适宜性综合指数能较好的修正耕地的生态系统服务价值.     

Circular business model evolution: Stakeholder matters for a self-sufficient ecosystem

Food waste is a key issue in the circular economy. A circular ecosystem results from the contributions of various stakeholders; however, the claims and value propositions of these stakeholders can differ, hampering long-term sustainability of the ecosystem. This study analyses the case of RiCibo, a circular ecosystem based in Genoa, Italy. RiCibo collects surplus food and redistributes it to the needy in the local community. The study examines the conditions that facilitated RiCibo’s evolution from a simple project to a circular self-sufficient ecosystem characterised by a co-designed circular business model with a broad range of stakeholders. The results show that sharing people, infrastructure and knowledge, together with mutual trust among stakeholders, are the preconditions of a circular ecosystem. Long-term continuity depends on additional tools that enhance financial self-sufficiency, namely, participative governance, a co-designed circular business model, accountability, frequent engagement, local actions and the development of advocacy power.     

我国跨境电商通关监管生态系统演化创新的动力机制

基于商业生态系统在互联网背景下的平台化原理,可解释我国跨境电商通关监管系统演化和监管模式创新的动态过程与动力机制。研究发现,跨境电商监管生态系统结构经历了中心-辐射型双边监管系统、规则网络型多边监管系统、共生型复杂自组织监管系统的演化过程,推动了不同阶段的监管模式创新。系统结构优化和系统能力提升是通关监管生态系统创新与升级的关键,平台正确的战略选择和不断叠加的外部网络效应共同推动了监管系统升级和监管模式创新。对比现状可知,跨境电商监管模式创新过程中仍存在数据的精确统计、监管的跨区域协同、通关流程中的瓶颈环节、知识产权监管和产品质量追溯等难题。据此,应加快构建规范化、法治化、便利化的新型监管体系,依托大数据分析等新兴技术,使通关监管"前推后移",并通过"微创新"不断优化通关监管流程。     

中国自然生态系统修复研究文献综述

以中国自然生态系统为研究对象,对生态修复研究情况进行梳理,总结出相关研究的时间、主题分布特征,并对自然生态系统修复的技术、模式、类型、案例研究内容展开仔细分析。通过文献梳理,提出了对国内生态修复的展望。     

Family meals and disparities in global ecosystem dependency. Three examples: Ghana,Russia and Sweden

This article highlights globalization in terms of dependency on local and global ecosystems when it comes to family diets. In an exploratory case study, one typical meal in three household settings in different parts of the world: Ghana, Russia and Sweden, is examined. Food paths are traced to compare the scale of ecosystem dependency. The result shows that ecosystem dependency varies greatly with implications for environmental impact. The Swedish household, as opposed to the Ghanaian and the Russian, is not dependent on local ecosystems for food provision, but increasingly on global systems. Opportunities and constraints for lowering environmental impacts related to diets in different economies are discussed. It is concluded that it is of great importance to create awareness in high‐income countries of the dependency on the global ecosystem and the resulting environmental impacts. It is in these countries that opportunities are available for change towards more sustainable diets. It is suggested that further research need to explore in greater depth how ecosystem dependency differs and how that translates into broad spectra of environmental impacts, considering other dimensions of sustainable development as well.     

Whither IPOs? Toward an Ecosystem Perspective on Corporate Financing: A Commentary

This commentary reviews the Canadian initial public offering (IPO) market and positions it within global capital market trends. Our views and comments reflect discussions with several market participants whom we have met over the years. Essentially, the falling number of IPOs in Canada during the last decade mimics trends in other developed countries such as the United States. In our view, five underlying factors underlie that decline. The picture that emerges is that capital markets are now widely viewed as a global integrated ecosystem where all actors are interconnected and an IPO represents but one way to raise capital.     

数字城市系统与城市可持续发展

从系统工程的角度研究数字城市的内涵及功能,建立从城市基础数据资源到宏观政策法规的数字城市系统模型,为城市可持续发展理论提供方法与工具.     

创新生态视角下中国信息产业面临的挑战与突围——美国制裁华为事件的启示

在贸易摩擦不断升级的背景下,美国不惜动用国家力量“绞杀”华为,其实质是对中国信息产业发展的围追堵截。文章类比生物生态系统,分析了中国信息产业创新生态系统的结构与生存机制,包括反馈机制、鲁棒调节机制、多样性调节机制等。针对中国信息产业领导种群的位置由欧美企业占据、企业核心技术缺失等问题,提出构建完善的产业生态系统,努力做到国产自主可控;聚焦信息产业核心技术,抢占产业生态领导种群位置;建立产业联盟,共建创新生态系统;加大对本土信息产业创新生态系统培育政策扶持力度等“突围”措施。     

生物医药产业创新生态系统构建与发展对策研究——基于系统动力学

创新对于高技术、高投入的生物医药产业的发展起着至关重要的作用。运用创新生态系统理论,参照自然生态系统构建了生物医药创新生态系统模型,并运用系统动力学方法,描绘因果关系图及存量流量图,分析影响生物医药创新发展的要素,据此为生物医药产业创新生态系统建设和发展提出完善政府政策、提高自主创新能力、加大产学研合作程度和重视知识产权的管理、运用和保护等对策建议。