当前位置:首页>南京>【专题数递】中国科学院南京地理与湖泊研究所科学数据中心发布长时序全球河流逐月溶解氧浓度数据集(1985-2023年)

【专题数递】中国科学院南京地理与湖泊研究所科学数据中心发布长时序全球河流逐月溶解氧浓度数据集(1985-2023年)

  • 2026-06-26 22:15:12
【专题数递】中国科学院南京地理与湖泊研究所科学数据中心发布长时序全球河流逐月溶解氧浓度数据集(1985-2023年)

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LakeData

近日,国家地球系统科学数据中心湖泊-流域分中心暨中国科学院南京地理与湖泊研究所科学数据中心联合江苏省科学数据中心水域生态分中心发布长时序全球河流逐月溶解氧浓度数据集(1985-2023年),揭示了气候变暖背景下的全球河流持续脱氧危机。诚邀相关领域研究人员访问使用。

该数据集由中国科学院南京地理与湖泊研究所湖泊与流域水安全全国重点实验室施坤研究小组研制生产,相关研究成果以“Sustained deoxygenation in global flowing waters under climate warming”为题,发表在国际权威刊物《Science Advances》上。中国科学院南京地理与湖泊研究所关琦为第一作者,施坤为论文通讯作者。

01

数据介绍

溶解氧作为供养水生生命活动和调节生物地球化学循环的关键元素,是全球地表水生态系统安全健康的基底。近年来,湖泊、海洋等地表水体均遭受到普遍性脱氧危机,然而针对河流溶解氧动态变化过程的研究主要集中在欧美和中国等少数温带区域,对极地和热带等气候变化热点地区河流的理解仍然缺乏。

研究小组基于全球河流宽度数据集(GRWL)筛选出宽度超过90米的河流;依托全球河流水质数据集(GRQA)的实测溶解氧数据作为模型训练与验证真值,以Landsat 5-9地表反射率数据、ERA5-Land日尺度气温再分析数据为模型核心动态输入,借助随机森林(RF)和极端梯度提升(XGBoost)模型构建了适用于全球河流的溶解氧浓度集成反演算法,形成了1985-2023年全球21439条河流长时序、逐月的溶解氧浓度历史数据集。模型独立验证精度高,平均绝对误差仅为0.87 mg L-1,平均相对误差为13%,反演精度高,性能稳定可靠。

数据结果显示,全球河流在1985-2023年经历了普遍脱氧危机,溶解氧浓度以-0.045 mg L-1/十年的速率显著下降,79%河流出现了脱氧问题,热带(20°S-20°N)河流脱氧最显著。未来气候变暖将持续加剧脱氧,流量变化和水库蓄水均影响脱氧进程,低流量和高流量条件都会减缓河流脱氧速率,水库蓄水则造成浅水加速、深水缓解的两极化影响。

图1 1985−2023年全球河流溶解氧浓度时空变化规律

图2. 流量变化对全球河流脱氧的影响

02

数据下载

1.国家地球系统科学数据中心湖泊-流域分中心

https://lake.geodata.cn/data/datadetails.html?dataguid=8376940027137

2.中国科学院南京地理与湖泊研究所数据中心

http://data.niglas.ac.cn/catalog/detail/1090

03

数据引用方式

中文引用方式参考:

关琦, 施坤, 等. 全球河流逐月溶解氧浓度数据集(1985-2023年). 国家地球系统科学数据中心湖泊-流域分中心,2026.

https://doi.org/10.11971/lim.2026.014.db.lwdc

https://cstr.cn/37833.11.lake.2026014

英文引用方式参考:

Qi Guan, Kun Shi, et al. Global fluvial DO database (GDOD) (1985-2023). Lake-Watershed Science Data Center, National Earth System Science Data Center, 2026.

https://doi.org/10.11971/lim.2026.014.db.lwdc

https://cstr.cn/37833.11.lake.2026014

04

论文引用方式

Qi Guan, Kun Shi, Xuehui Pi, Sustained deoxygenation in global flowing waters under climate warming, Science Advances, 2026, aef3132, https://doi.org/10.1126/sciadv.aef3132

END

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  1. CONNECT:[ UseTime:0.001049s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001515s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.015245s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000726s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001393s ]
  6. SELECT * FROM `set` [ RunTime:0.006882s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001593s ]
  8. SELECT * FROM `article` WHERE `id` = 587419 LIMIT 1 [ RunTime:0.029154s ]
  9. UPDATE `article` SET `lasttime` = 1782571290 WHERE `id` = 587419 [ RunTime:0.013733s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.005242s ]
  11. SELECT * FROM `article` WHERE `id` < 587419 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001145s ]
  12. SELECT * FROM `article` WHERE `id` > 587419 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.017686s ]
  13. SELECT * FROM `article` WHERE `id` < 587419 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.152448s ]
  14. SELECT * FROM `article` WHERE `id` < 587419 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.135801s ]
  15. SELECT * FROM `article` WHERE `id` < 587419 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.110331s ]
0.662602s