Better plans are needed for mitigating the ecological impacts of Cambodia''s Funan Techo Canal

IF 13.9 1区 生物学 Q1 ECOLOGY Nature ecology & evolution Pub Date : 2025-01-02 DOI:10.1038/s41559-024-02605-3
Hong Yang, Defu Liu, Henglin Xiao, Julian R. Thompson, Roger J. Flower, Heang Sophal, Tomos Avent
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需要更好的计划来减轻柬埔寨富南技术运河的生态影响
柬埔寨于2024年8月开始建设全长180公里的富南技术运河,这是湄公河流域最大的运河项目(参考文献1)。该项目旨在通过提供国内航线和改善运输连通性来产生巨大的经济效益。人们不仅担心运河对该地区多样化和脆弱的生态系统的生态影响,而且还担心未充分探索的缓解机会。运河的生态影响将不仅仅局限于栖息地的丧失。它的运行——加上气候变化和湄公河上游水电开发——可能会加剧极端水文气候事件的影响。该地区已经经历了更加频繁和严重的干旱,导致湄公河水位空前低。这些极端气候对湄公河三角洲的生态和人类社区产生了深远的影响,尤其是对数百万人生计至关重要的稻米生产。运河还将改变水位状况。我们从现有的运河网络中知道,排水基础设施会破坏自然的水文生态过程。湿地及其动植物依赖于季节性洪水,但近几十年来,洪水的范围和持续时间都有所下降。这对湿地生态系统服务的提供产生了连锁反应,包括碳封存、水净化和鱼类和鸟类的栖息地。阜南大运河可能会加剧这些问题,并可能影响多达1300平方公里的生态重要洪泛平原。与世界上其他运河一样,这条运河可能会增加入侵物种蔓延到柬埔寨淡水生态系统的风险。木本灌木含羞草(Mimosa pigra)在柬埔寨淡水沼泽的传播已经涉及到运河网络。最后,运河可能会加速淤积和加剧盐水入侵。由于海平面上升,湄公河三角洲已经很容易受到盐碱化的影响,预计到本世纪中叶,咸水将向内陆推进50-60公里。运河可能会改变河水流向,使海水进一步渗入农业地区,从而加剧这一问题,这将破坏当地社区的粮食安全,并增加柬埔寨农村人口的社会经济压力。
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来源期刊
Nature ecology & evolution
Nature ecology & evolution Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
22.20
自引率
2.40%
发文量
282
期刊介绍: Nature Ecology & Evolution is interested in the full spectrum of ecological and evolutionary biology, encompassing approaches at the molecular, organismal, population, community and ecosystem levels, as well as relevant parts of the social sciences. Nature Ecology & Evolution provides a place where all researchers and policymakers interested in all aspects of life's diversity can come together to learn about the most accomplished and significant advances in the field and to discuss topical issues. An online-only monthly journal, our broad scope ensures that the research published reaches the widest possible audience of scientists.
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