The Belt and Road Initiative (BRI), proposed by Chinese President Xi Jinping in 2013, is an international initiative with vital implications for the economy, society, culture, and the environment. Consisting of the "Silk Road Economic Belt" and the "21st Century Maritime Silk Road", the BRI was inherited and developed from the ancient Silk Road that played an essential role in connecting the West with the East on various socio-economic levels with its spirit of peace, friendship, inclusiveness, openness, and mutual benefit for many centuries.
The "Belt and Road" Initiative (BRI), i.e., the official Chinese term for the "Silk Road Economic Belt" and the "21st Century Maritime Silk Road", was proposed to share China's development opportunities with BRI-related countries and achieve common prosperity. As China's most ambitious long-term regional infrastructure project, the BRI primarily aims to provide unparalleled for international economic cooperation, enhancing trade and connectivity between Asia, Africa and Europe with terrestrial and maritime routes . Up to now, the BRI has officially involved 147 countries and 32 international organizations [1]. The BRI-related countries and regions constitute nearly 70% of the world’s population and account for more than 50% of global output [2]. It is projected that the population of Belt and Road countries (including China) will reach approximately 5.4 billion by 2030 [3]. The BRI will serve as a positive move toward cooperation among the Belt and Road regions, stimulating the economic momentum of member countries and countries along the routes. In addition, the BRI intends to increase understanding and trust among BRI-involved countries and aims to achieve policy coordination, infrastructure connectivity, unimpeded trade, financial integration, and person-to-person bonds in Asia, Europe, and Africa [4].
The BRI has yielded fruitful results since it was proposed. From 2013 to September 2021, the cumulative value of trade in goods between China and BRI-involved countries amounted to USD 10.4 trillion [5]. In 2021, non-financial direct investment by Chinese enterprises in 56 countries along the Belt and Road routes amounted to USD 20.3 billion [6]. Furthermore, China–Europe freight trains have formed a grand channel for international trade spanning Eurasia. By the end of October 2021, a total of 73 routes for China–Europe freight trains had been launched, linking China with 175 cities in 23 European countries, and more than 46,000 trips had been made by these trains [5]. However, given the unprecedented dimensions of this initiative, many scholars have voiced concerns about its negative ecological and environmental impacts. Some have maintained that current official BRI investment remains heavily concentrated on fossil fuels, traditional forms of transportation infrastructure, and climate-unfriendly sectors [7]. Still, others argued that the changes in China’s policy priorities toward a greener economy could create a framework enabling China to outsource its polluting industries elsewhere while at the same time shifting its domestic economy to a new phase defined by the adoption of green technologies [8].
In fact, most countries and regions along the BRI routes are in sensitive zones of climate and geological change, with complex natural and fragile ecological environments. Therefore, it is understandable that socioeconomic development may sometimes be accompanied by some inevitable impacts on the ecology and environment. However, some scholars used the environmental consequences brought by the BRI as political attack tools and published their opinions with obvious political intent in scientific journals. Researchers found that some ecological issues were, to a certain extent, subjective assumptions. Regional ecosystem health and environmental problems are scientific issues that need to be addressed and researched scientifically and not to be politicized subjectively. Therefore, researchers try to use Cite Space to analyze the relevant papers published from 2013 to 2021 and review the ecological and environmental problems raised by the scholars in details. Meanwhile, researchers propose some suggestions for research issues on ecosystem health and environmental geography in the Belt and Road regions in the future.In view of the potential environmental challenges proposed by scholars and the deficiencies in existing research, these environmental challenges should be addressed by scientific means. The focuses for future study on environmental challenges of the BRI are recommended as follows.
The lack of comprehensive and up-to-date data is a key obstacle to in-depth research on the ecological environment of the BRI. Spatial analysis and monitoring technology can provide large-scale monitoring tools to obtain data on the status and changing trends of ecological and environmental quality. These scientific data can be used to judge the level of environmental pollution and quality, objectively evaluate the current main ecological and environmental problems. Therefore, to better and more objectively assess the ecologies and environments of the Belt and Road regions, more research is needed using spatial analysis and monitoring technologies
Ecosystem health, a kind of functional manifestation of ecosystem operation, can ensure the ecosystem develops well [21]. Ecosystem health is a comprehensive characteristic of the ecosystem, which can reflect the regional ecological environment from multiple perspectives. It can be described as a comprehensive, multiscale guiding framework in the evaluation of ecosystem vigor, organization, and resilience [22][23]. This evaluation mechanism of the ecosystem, comprising vigor (activity, metabolism, or primary productivity), organization (the diversity and number of interactions between system components), and resilience (the ability to maintain its structure and pattern of behavior in the presence of stress) [22][24], determines the assessment framework of ecosystem health and affects the identification of the regional environment. A systematic study of regional ecosystem health, therefore, can not only clarify the characteristics and spatial-temporal variations in regional ecological environments in the Belt and Road regions from multiple perspectives, but also contribute to the understanding of the driving mechanisms of regional ecological environmental change, providing a scientific basis for environmental protection under the BRI framework.
The potential impacts of the BRI proposed by scholars on the atmospheric, water, soil, geological, and biotic environment can be summarized and discussed. In addition, the driving factors of these effects (such as the factors affecting the carbon emissions by the transportation industry in countries in the BRI) and the direction and extent of these effects are both worthy of further discussion.
As long as an ecosystem is healthy and well-protected, ecological and green industries can be developed to realize the economic value, thereby boosting regional development. Whether the ecological environments of the Belt and Road regions could support regional development and how to support it remain a largely unexplored area. Investigating the relationship between regional development and ecosystem health among these regions is the foundation for guaranteeing ecosystem health in order to promote regional development as a whole.
It is essential for future studies to attach importance to the relationship between development and protection. The relationship between economic development and the ecological environment should not be regarded as a zero-sum game. Does economic growth inevitably lead to ecological destruction? Is there a balanced model to achieve a "win-win" scenario for economic growth and environmental protection? Can this model be applied to future developments in the Belt and Road regions? These issues must be probed and clarified for further research.
Along with advances in BRI construction, infrastructure construction, export supply chains, and energy-intensive industries would surge, which could result in an increase in some unavoidable environmental problems such as greenhouse gas emissions, water pollution, and so on. Therefore, it is advisable to propose constructive strategies and solutions to environmental problems from different perspectives. Due to the different levels of development, financial status, sensitivity, and responsiveness to environmental changes in the Belt and Road regions, addressing environmental problems involved in the BRI is complex and multi-scaled. At the same time, the BRI infrastructure types could be divided into communication, transport, energy, and economic infrastructure and activities, all of which have different impacts on the environment. Therefore, it is essential to propose specific strategies and solutions to the environmental problems caused by various types of infrastructure in different regions.
This entry is adapted from the peer-reviewed paper 10.3390/ijerph19105843