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长江流域水生生物资源恢复
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长江流域水生生物资源恢复态势总体向好
Ren Min Ri Bao· 2025-08-05 00:05
Core Insights - The overall recovery of aquatic biological resources in the Yangtze River Basin is positive, with a continuous improvement in integrity index and a need for enhanced protection of rare and endangered species [2][7] Group 1: Aquatic Biological Resources Recovery - In 2024, the unit resource amount in the main stream of the Yangtze River is 2.3 kg, an increase of 9.5% compared to 2023 [2] - From 2021 to 2024, a total of 344 indigenous fish species have been monitored, an increase of 36 species compared to the pre-fishing ban period (2017-2020) [2] - The overall water quality evaluation in the Yangtze River is rated as excellent, with 98.6% of monitoring sections classified as grade I-III, up 0.1 percentage points from 2023 [2] Group 2: Key Protected Species - The distribution range of the Yangtze River dolphin is expanding, and the number of certain key protected species is increasing, including the first natural reproduction of the lipstick loach in 30 years [3] - The resource amount of the four major economic fish species in the middle reaches of the Yangtze River is 6.2 times that of 2020 [3] - The implementation of a comprehensive fishing ban since 2017 has led to a steady increase in biodiversity in the upper reaches of the Yangtze River [3] Group 3: Conservation Efforts - The Ministry of Agriculture and Rural Affairs has guided the establishment of indigenous fish breeding farms in Guizhou, Sichuan, and Yunnan, releasing 6.63 million rare indigenous fish into the wild during the 14th Five-Year Plan period [4] - Successful monitoring of artificial breeding and spawning behavior of the Yangtze sturgeon has been achieved through habitat restoration efforts [4] - Restoration projects have improved the natural connectivity of tributaries, allowing rare fish species to re-enter and thrive in these areas [4] Group 4: Challenges in Biodiversity Recovery - Despite reports of increased fish populations in certain areas, the overall recovery of fish resources and biodiversity in the Yangtze River is still slow [5] - The slow recovery of flagship species such as the Chinese sturgeon and Yangtze sturgeon indicates ongoing survival crises for these species [7] - Historical data shows that 99 out of 443 fish species previously distributed in the Yangtze River have not been monitored since the fishing ban [5] Group 5: Future Conservation Strategies - There is a need to optimize and upgrade the rescue action plan for rare and endangered species, including expanding artificial breeding and release efforts for the Chinese sturgeon [8] - Continuous monitoring and removal of potential threats such as underwater nets and fishing lines are essential for species protection [8] - Further efforts are required to restore spawning grounds and promote natural reproduction of the Yangtze sturgeon to enhance self-sustaining populations [8]
长江流域水生生物资源恢复态势总体向好(美丽中国)
Ren Min Ri Bao· 2025-08-04 22:39
核心阅读 近日,农业农村部会同水利部、生态环境部、交通运输部联合发布的《长江流域水生生物资源及生境状 况公报(2024年)》显示,长江流域水生生物资源恢复态势总体向好,完整性指数持续提升。要继续加 强长江珍稀濒危物种保护,加大拯救行动措施力度。 2017年开始实施全面禁渔以来,赤水河不同江段水生生物多样性持续稳步提升,整体资源量明显增加, 2021年至2024年累计监测到土著鱼类117种。珍稀特有鱼类物种数和资源量维持在较高水平,水生生物 完整性指数连续3年稳定在"良"等级。 《长江流域水生生物资源及生境状况公报(2024年)》显示,长江水生生物资源恢复态势总体向好, 2024年,长江干流单位资源量为2.3千克,比2023年上升9.5%;物种多样性水平稳步回升,2021年至 2024年,长江流域累计监测到土著鱼类344种,种类数比禁渔前(2017年至2020年)增加36种;栖息生 境总体稳定,2024年,长江干支流水质评价总体为优,Ⅰ—Ⅲ类水质断面占98.6%,比2023年上升0.1个 百分点。针对长江禁渔后水生生物资源及生境恢复成效,有关专家进行了解读。 长江部分重点保护物种数量上升,赤水河水生生物保护工作 ...
长江流域水生生物资源恢复态势总体向好(美丽中国) 物种多样性水平稳步回升,珍稀濒危物种保护仍需加强
Ren Min Ri Bao· 2025-08-04 21:59
长江天然水域的鱼类资源和多样性仍在缓慢恢复阶段 核心阅读 近日,农业农村部会同水利部、生态环境部、交通运输部联合发布的《长江流域水生生物资源及生境状 况公报(2024年)》显示,长江流域水生生物资源恢复态势总体向好,完整性指数持续提升。要继续加 强长江珍稀濒危物种保护,加大拯救行动措施力度。 《长江流域水生生物资源及生境状况公报(2024年)》显示,长江水生生物资源恢复态势总体向好, 2024年,长江干流单位资源量为2.3千克,比2023年上升9.5%;物种多样性水平稳步回升,2021年至 2024年,长江流域累计监测到土著鱼类344种,种类数比禁渔前(2017年至2020年)增加36种;栖息生 境总体稳定,2024年,长江干支流水质评价总体为优,Ⅰ—Ⅲ类水质断面占98.6%,比2023年上升0.1个 百分点。针对长江禁渔后水生生物资源及生境恢复成效,有关专家进行了解读。 长江部分重点保护物种数量上升,赤水河水生生物保护工作取得良好成效 重点保护物种方面,长江江豚分布范围呈现进一步扩散趋势,斑块分布状况趋于缓解,部分重点保护物 种数量上升,新监测到长鳍吻鮈、红唇薄鳅等2种国家二级重点保护物种,近30年来首次监 ...
长江流域水生生物资源恢复态势向好
Ren Min Ri Bao· 2025-08-02 23:11
本报北京8月2日电 (记者郁静娴)近日,农业农村部等部门发布《长江流域水生生物资源及生境状况 公报(2024年)》。公报显示,长江流域水生生物资源恢复态势总体向好。2024年,长江干流单位资源 量为2.3千克,比2023年上升9.5%;四大家鱼(青鱼、草鱼、鲢鱼、鳙鱼)在长江中游监利断面卵苗资 源量为83.2亿粒(尾),是禁渔前2020年的6.2倍。 《 人民日报 》( 2025年08月03日 02 版) (责编:胡永秋、杨光宇) 2024年长江流域水生生物完整性指数持续提升,赤水河水生生物完整性指数评价等级连续3年为"良"; 洞庭湖比2023年上升一个等级;长江干流、鄱阳湖、岷江等水域与2023年持平。 物种多样性水平稳步回升,2021至2024年,长江流域累计监测到土著鱼类344种,种类数比禁渔前 (2017至2020年)增加36种,时隔30余年在长江发现自然繁殖的胭脂鱼鱼苗。 栖息生境总体稳定,2024年长江干支流水质评价总体为优,Ⅰ—Ⅲ类水质断面占98.6%,比2023年上升 0.1个百分点。 ...
长江流域水生生物资源恢复态势向好 四大家鱼卵苗资源量是2020年的6.2倍
Ren Min Ri Bao· 2025-08-02 21:41
本报北京8月2日电 (记者郁静娴)近日,农业农村部等部门发布《长江流域水生生物资源及生境状况 公报(2024年)》。公报显示,长江流域水生生物资源恢复态势总体向好。2024年,长江干流单位资源 量为2.3千克,比2023年上升9.5%;四大家鱼(青鱼、草鱼、鲢鱼、鳙鱼)在长江中游监利断面卵苗资 源量为83.2亿粒(尾),是禁渔前2020年的6.2倍。 (文章来源:人民日报) 栖息生境总体稳定,2024年长江干支流水质评价总体为优,Ⅰ—Ⅲ类水质断面占98.6%,比2023年上升 0.1个百分点。 2024年长江流域水生生物完整性指数持续提升,赤水河水生生物完整性指数评价等级连续3年为"良"; 洞庭湖比2023年上升一个等级;长江干流、鄱阳湖、岷江等水域与2023年持平。 物种多样性水平稳步回升,2021至2024年,长江流域累计监测到土著鱼类344种,种类数比禁渔前 (2017至2020年)增加36种,时隔30余年在长江发现自然繁殖的胭脂鱼鱼苗。 ...