Wang Changbo, Zhang E, Wang Yafei, Chang Yuan, Zhang Pengpeng, Chen Xiao, Pang Mingyue, Yu Han, Wang Qunwei, Zhang Lixiao, Zhou Dequn, Lenzen Manfred, Malik Arunima, Zha Donglan, Zhang Xuejun, Feng Meili, Mi Zhifu
College of Economics and Management & Research Center for Soft Energy Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Laboratory of Digital Intelligence Management and Low-carbon Operations for Manufacturing System, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
iScience. 2024 Oct 9;27(11):111121. doi: 10.1016/j.isci.2024.111121. eCollection 2024 Nov 15.
Human economic activities severely threaten freshwater fish biodiversity in different river basins. Trade makes the impact more mysterious and complex and confounds local efforts to protect freshwater biodiversity. To investigate the relationship between trade and freshwater fishes, we developed a river-basin economic transaction model that is applied to mainland China, home to 9% of the world's freshwater fish species. Here, we show that interbasin trade induced by final demand contributes 74% of the threats to China's freshwater fish biodiversity. Economically developed river basins (e.g., the Huaihe River) are the main beneficiaries of interbasin trade at the cost of biodiversity deterioration in economically underdeveloped river basins (e.g., the upper Pearl River), especially when trade occurs between distant basins. Our findings highlight the significance of the shift in governance from administrative divisions to river basins and control measures in different stages of economic supply chains to mitigate freshwater fish biodiversity threats.
人类经济活动严重威胁着不同流域的淡水鱼生物多样性。贸易使这种影响更加难以捉摸和复杂，也使当地保护淡水生物多样性的努力受到困扰。为了研究贸易与淡水鱼之间的关系，我们开发了一种流域经济交易模型，并将其应用于中国大陆，这里拥有世界9%的淡水鱼物种。在此，我们表明，最终需求引发的流域间贸易对中国淡水鱼生物多样性构成了74%的威胁。经济发达流域（如淮河）是流域间贸易的主要受益者，其代价是经济欠发达流域（如珠江上游）生物多样性的恶化，尤其是当贸易发生在距离较远的流域之间时。我们的研究结果凸显了治理从行政区划向流域转变的重要性，以及在经济供应链不同阶段采取控制措施以减轻淡水鱼生物多样性威胁的重要性。
