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被称作“死亡之海”的塔克拉玛干沙漠,年降水不足100 mm、蒸发量高达2000~3000 mm,却在近年频繁出现洪涝:2021年7月北部一次洪水淹没超300 km2,2024年8月又因洪水导致和田—阿拉尔沙漠公路交通受阻。兰州大学王鑫与中国科学院青藏高原所陈发虎等团队整合卫星遥感与地面气象水文资料,系统量化了1990—2020年沙漠腹地“增水—增洪”的变化,并追溯到更长地质时期,揭示其与气候变暖和极端降水增强的耦合机制。

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被称作“死亡之海”的塔克拉玛干沙漠,年降水不足100 mm、蒸发量高达2000~3000 mm,却在近年频繁出现洪涝:2021年7月北部一次洪水淹没超300 km2,2024年8月又因洪水导致和田—阿拉尔沙漠公路交通受阻。兰州大学王鑫与中国科学院青藏高原所陈发虎等团队整合卫星遥感与地面气象水文资料,系统量化了1990—2020年沙漠腹地“增水—增洪”的变化,并追溯到更长地质时期,揭示其与气候变暖和极端降水增强的耦合机制。

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    被称作“死亡之海”的塔克拉玛干沙漠,年降水不足100 mm、蒸发量高达2000~3000 mm,却在近年频繁出现洪涝:2021年7月北部一次洪水淹没超300 km2,2024年8月又因洪水导致和田—阿拉尔沙漠公路交通受阻。兰州大学王鑫与中国科学院青藏高原所陈发虎等团队整合卫星遥感与地面气象水文资料,系统量化了1990—2020年沙漠腹地“增水—增洪”的变化,并追溯到更长地质时期,揭示其与气候变暖和极端降水增强的耦合机制。

    被称作“死亡之海”的塔克拉玛干沙漠,年降水不足100 mm、蒸发量高达2000~3000 mm,却在近年频繁出现洪涝:2021年7月北部一次洪水淹没超300 km2,2024年8月又因洪水导致和田—阿拉尔沙漠公路交通受阻。兰州大学王鑫与中国科学院青藏高原所陈发虎等团队整合卫星遥感与地面气象水文资料,系统量化了1990—2020年沙漠腹地“增水—增洪”的变化,并追溯到更长地质时期,揭示其与气候变暖和极端降水增强的耦合机制。

    . 塔克拉玛干沙漠受气候影响恐再频发洪水. 科技导报, 2025 , 43 (16) : 12 -12 .
    . Science & Technology Review, 2025 , 43 (16) : 12 -12 .
    被称作“死亡之海”的塔克拉玛干沙漠,年降水不足100 mm、蒸发量高达2000~3000 mm,却在近年频繁出现洪涝:2021年7月北部一次洪水淹没超300 km2,2024年8月又因洪水导致和田—阿拉尔沙漠公路交通受阻。兰州大学王鑫与中国科学院青藏高原所陈发虎等团队整合卫星遥感与地面气象水文资料,系统量化了1990—2020年沙漠腹地“增水—增洪”的变化,并追溯到更长地质时期,揭示其与气候变暖和极端降水增强的耦合机制。
    结果显示,自1960年以来,塔克拉玛干沙漠及其周边地区呈现出显著的“暖湿化”趋势,其中,自1990年起平均气温较此前升高约1.5℃、年降水整体增加约为10 mm,尤其在每年5—10月,气温升高与降水增加共同驱动腹地水体持续扩张,指示洪水事件频率明显上升。相关性分析表明,降水对沙漠腹地水体变化的响应几乎无滞后性,而气温通过增强冰雪消融和蒸散,呈滞后但更主导的作用。
    更长时间尺度的证据与现代观测相呼应。考古与地貌记录显示,在气候较暖阶段(如西汉),沙漠南缘河流可深入腹地,支撑更靠近沙心的人类聚落(如位于新疆维吾尔自治区和田地区的尼雅遗址);第四纪钻孔与年代学研究也揭示:温暖的间冰期以河湖沉积占优、寒冷的冰期以风成沙丘占优,在距今约180万~30万年前的期间内多次循环,指示全球变暖常伴随“河流再活化、向沙漠深处推进”的格局。这一跨年代的多证据链为“变暖致洪涝增强”提供了强有力的地质学对照。
    (来源:中国科技期刊卓越行动计划入选期刊《Journal of Earth Science》,2025,36(3))

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    2种不同金属材料的力学参数

    Family
    属数
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    种数
    Number of
    species
    占总种数比例
    Percentage of
    total species (%)

    Genus
    种数
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    species
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    Percentage of total
    species (%)
    鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
    小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
    多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
    红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
    小菇属 Mycena 11 5.26
    光柄菇属 Pluteus 5 2.39
    红菇属 Russula 17 8.13
    栓菌属 Trametes 5 2.39
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