中国科学数据（中英文网络版）2025，Vol.10Issue(3)：232-239,8.DOI:10.11922/11-6035.ncdc.2025.0097.zh
2000-2020年欧亚大陆1 km分辨率多年冻土分布数据集
A dataset of permafrost distribution with a resolution of 1 km over Eurasia(2000-2020)
摘要
Abstract
The presence and distribution of permafrost profoundly influence surface energy balance,hydrological processes,and ecosystem stability,while also regulating the dynamics of terrestrial carbon stocks.As such,permafrost mapping is a critical foundation for assessing the impacts climate change and understanding carbon-climate feedback mechanisms.In this study,we compiled 1,749 ground truth samples covering both permafrost and non-permafrost locations,and integrated multi-source environmental predictors-including air temperature,precipitation,snow cover days,elevation,and soil properties.Using an optimized feature set and a random forest model,we performed permafrost occurrence prediction,evaluated by 5-fold cross-validation repeated 40 times.The model achieved an accuracy of 0.936 and an F1 score of 0.936,indicating strong generalization capability.Based on this framework,we developed a dataset of permafrost distribution across Eurasia for the years 2000,2005,2010,2015,and 2020,with a spatial resolution of 1 km.The resulting maps exhibit strong spatial continuity and accurately capture permafrost patterns in both high-latitude and high-altitude regions.This dataset provides a valuable foundation for analyzing permafrost changes,assessing carbon release risks,simulating regional climate responses,and supporting environmental monitoring efforts.关键词
多年冻土/欧亚大陆/数据集/空间分布/机器学习Key words
permafrost/Eurasia/dataset/spatial distribution/machine learning引用本文复制引用
肖瑶,刘广岳,赵国辉,吴晓东,周楠,焦雪玲,鲁莹莹,赵林..2000-2020年欧亚大陆1 km分辨率多年冻土分布数据集[J].中国科学数据（中英文网络版）,2025,10(3):232-239,8.基金项目
国家重点研发计划(2022YFF0711702,2020YFA0608501) （2022YFF0711702,2020YFA0608501）
国家自然科学基金(42430412) （42430412）
冰冻圈科学与冻土工程全国重点实验室自主部署项目(CSFSE-TZ-2407). National Key Research and Development Program of China(2022YFF0711702,2020YFA0608501) （CSFSE-TZ-2407）
National Natural Science Foundation of China(42430412) （42430412）
the Program of the Key Laboratory of Cryospheric Science and Frozen Soil Engineering,CAS(No.CSFSE-ZQ-2407) （No.CSFSE-ZQ-2407）
