Challenges

The fragile karst landscapes stretching from Guangxi (China) to northern Vietnam harbor astonishingly rich and unique plant diversity, crucial for ecological balance and poverty alleviation in this cross-border region. This project tackled key conservation challenges: data scarcity, insufficient knowledge of endemic and shared species, and transnational collaboration obstacles. In Guangxi, a comprehensive survey first clarified the endangerment status of 8,739 vascular plant species, rectifying long-standing literature errors and enabling a regional red list (SDG15.5). Addressing research gaps in northern Vietnam’s flora, the first trilingual (Chinese-Vietnamese-English) plant checklist integrated cross-border data, resolving fragmentation (SDG17.17). The project also laid the foundation for dynamic red list assessments for karst-specific plants and provided habitat conservation methodologies (SDG15.1). Furthermore, in-depth studies of cross-border species like Gesneriaceae and new taxonomic publications are innovating classification, while Gesneriaceae serves to quantify East Asian monsoon impacts on speciation (SDG15.9).

Toward a Solution

The practice of the China (Guangxi)-Vietnam (North) Plant Diversity Research Project demonstrates that South-South cooperation can fully achieve breakthroughs in technical autonomy, institutional equity, and outcome sustainability. Its “data sharing breaks barriers, technical collaboration strengthens capacity, policy alignment promotes implementation” three-pronged model not only solves the challenges of cross-border biodiversity conservation but also reshapes the agency of Southern countries in technology governance, contributing a new paradigm for global sustainable development.

1. Breakthrough Paths
2. Institutional Equity: Restructuring Governance Rules with Localized Innovation:The project adapted Guangxi’s localized solutions suitable for regional characteristics and, through cross-border bilateral cooperation, expanded them into a “China (Guangxi) – Vietnam (North) Solution,” exploring the regional-to-international transition in South-South cooperation. For instance, the “localized innovation” of Guangxi’s “Technical Specification for Wild Gesneriaceae Survey” first ensured technical suitability and, further, through the “China (Guangxi) – Vietnam (North) Plant Diversity Research and Conservation,” promoted the shift of cross-border conservation mechanisms from “unilateral assistance” to “bilateral mutual recognition.”
3. Outcome Sustainability: Achieving Long-Term Governance through Institutional Embedding:The project constructed a long-term cooperation and development mechanism through “joint organization + standard exploration + capacity building.” The China-Vietnam plant diversity research and conservation teams not only coordinated joint scientific expeditions between the two countries’ research teams but also promoted the establishment of cross-border data and material sharing agreements.
4. Global Implications of the Model
5. Localized Innovation Feeds Back into Global Governance:The project integrated regional solutions (Guangxi’s local plant survey and red list) into transnational cooperation issues (the publication of the monograph “A Checklist of the Plants of Northern Vietnam”) and can, through platforms such as the United Nations Convention on Biological Diversity (CBD), feed back into the practices of countries along the “Belt and Road” and even global practices. This “regional solution – global standard” transformation path provides replicable strategies for Southern countries to participate in global governance.
6. Institutional Embedding Ensures Long-Term Governance:The project ensures that cooperative outcomes transcend short-term project cycles through a tiered cooperation of “national agreements – local standards – institutional participation.”

III. Future Paths

This project model can be replicated and transferred to “Belt and Road” countries with karst distribution and even countries globally facing ecosystem crises, including:

1. Technical Replication: Combining modern molecular biology techniques with traditional classical morphological taxonomy to carry out cross-border regional cooperation.
2. Institutional Innovation:Laying the preliminary foundation for the establishment of the ASEAN Karst Biodiversity Alliance, with future attempts to include the national botanical gardens and protected area construction of countries such as Thailand and Laos to build a transnational network for data, technology, and funding circulation.
3. Financial Mechanisms: Exploring commercialization models for ecological restoration within the context of South-South cooperation.
4. Conclusion

This project demonstrates that the core competitiveness of South-South cooperation lies in ? localized innovation restructuring rules and ? institutional embedding ensuring long-term effectiveness, with the ultimate goal of achieving a balance between the right to development and the right to a healthy environment. This model not only provides Southern countries with a dual pathway of “Nature-based Solutions” (NbS) and technical autonomy to address biodiversity loss but also opens up new possibilities for restructuring the global ecological governance order under the 2050 vision of “living in harmony with nature.” In the future, as more developing countries join this network of practice, South-South cooperation is expected to move from regional collaboration towards global leadership, reshaping the discourse system of 21st-century sustainable development.