Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Rare earth elements are widely identified as critical raw materials to underpin high-end technological innovation and the development of emerging industries, which makes them as important strategic minerals deserved by key international great powers. Since 2011, the United States and other developed nations are quickly fostering the development of their supply chains and industrial ecosystems of rare earth out of China’s engagement. Consequently, the new diversified supply pattern of rare earth has been formalizing at global level. Under this full supply chain view, this study performs a deep-dive analysis of international rare earth industry landscape changes in the key stage from mining, refinery, throughout to final recycling. Meanwhile, their future potential changes are further explored to provide the key implications for China’s rare earth industry to structure their global strategies.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Food system is the foundation of human society, thus the sustainable transition of food system is one of the key topics towards global sustainability. Facing the global climate crisis, regional conflict, and pandemic that unseen in a century, it becomes critical to build a sustainable food system in line with the Chinese context for ensuring its grain and food security, national nutrition and health, social justice, ecological balance, market effectiveness, and system resilience. To address these focuses, this study analyzed the main issues and challenges faced by China’s current food system, and decoded the relationship between food system and sustainable development goals of the United Nations from supply, demand, and security guarantee mechanism perspectives. Based on these, this study developed a conceptual framework for sustainable food system from life cycle, global, and system perspectives. This study further identified six key dimensions, including security, health, justice, greenness, economy, and resilience, for constructing the strategic framework of China’s sustainable food system, and proposed paths ahead for implementation. We hope to provide some system reflections on how to ensure China’s food security in the new era and further to contribute to sustainable global food system transition with Chinese wisdom and Chinese solutions.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The Belt and Road is a road of land-sea linkage. Trade channels are the key to land-sea linkages, and it is of great practical significance to study the coupling and coordination of them. Taking the nine provinces and cities along the Belt and Road in China from 2007 to 2018 as samples, this work empirically studies the coupling and coordination of land-sea trade channels, and evaluates and analyzes their development level, development speed, and regional differences. Research shows that: the land and sea areas of most provinces and cities are unevenly affected by the Belt and Road Initiative, and there are obvious regional differences. The reasons for these differences mainly include development space foundation, government positioning, innovation intensity and effectiveness, and so on. Based on this, the study puts forward suggestions including optimizing the development pattern of the channel, constructing the “software” and “hardware” of the channel simultaneously, and building the frontier and linkage foundation of the Belt and Road development with ports as the core.
Subjects: Biology >> Ecology submitted time 2020-05-18
Abstract： As the carrier and theoretical support of life community consisting of mountain, water, forest, field, lake and grass, watershed and watershed ecology are playing an increasingly important role in the construction of national ecological civilization. The research on the interrelation of spatial structure, process, function, mechanism and regulation of watershed ecosystem and progressively variable emphasis on these contents is the research paradigm of watershed ecology. However, watershed ecology has not established its own endogenous model framework of index systems to describe spatial structure of watershed ecosystem, which is able to make a close link between the structural components of watershed ecosystem, land and water body, upstream and downstream, or terrestrial and aquatic organisms. Therefore, the researches of basin ecology are scattered in freshwater ecology, terrestrial ecosystem ecology, soil conservation, water conservancy engineering and agricultural environmental science. The core theory of watershed ecology has not been significantly developed till now. This study analyzes the bottleneck in the development of watershed ecology, reviews the research methods and achievements of quantitative characteristics of spatial structure of watershed ecosystem based on geography and landscape ecology. The progress of quantitative characteristics of spatial structure of watershed ecosystem developed using hierarchical mechanism theory and meta-ecosystem theory in the discipline of watershed ecology is also discussed. In order to provide methodology for quantifying the spatial structure of watershed ecosystem and relationships between structural components in watershed ecosystem, the overall index and indices of structural component and structural component relationships of watershed ecosystem are suggested. " "
Peer Review Status:
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