水土保持研究2025，Vol.32Issue(1)：148-159,12.DOI:10.13869/j.cnki.rswc.2025.01.010
近40年内蒙古近地表土壤冻融状态时空演变特征解析
Analysis of spatiotemporal evolution characteristics of freeze-thaw state of surface soil in Inner Mongolia over the past 40 years
摘要
Abstract
[Objectives]The aims of this study are to analyze the spatiotemporal differentiation and variation patterns of near-surface soil freeze-thaw state in Inner Mongolia,to quantify the influence of driving factors,so as to provide a theoretical basis for regional ecological environment protection and infrastructure construction.[Methods]Based on ERA5-LAND soil temperature data,the spatiotemporal evolution characteristics and driving factors of near-surface soil freeze-thaw states in Inner Mongolia over the past 40 years were analyzed by using Theil-Sen median,Mann-Kendall and multiple regression residual analysis methods.[Results](1)In recent 40 years,the onset dates of the autumn-winter freezing period and the complete freezing period in Inner Mongolia showed a delayed trend,with the change rates of 0.54 d/10 a and 0.45 d/10 a,respectively;with respect to the spatial distribution,they were gradually advanced with the increase of latitude and longitude.The onset dates of the winter-spring thawing period and the complete thaw period showed an advanced trend,with the change rates of 2.17 d/10 a and 2.15 d/10 a,respectively;with respect to the spatial distribution,they were gradually delayed with the increase of latitude and longitude.(2)The occurrence days of autumn-winter initial freezing period,complete freezing period and winter-spring thawing period showed a decreasing trend,with the change rates of 0.10 d/10 a,2.61 d/10 a and 0.27 d/10 a,respectively,while the occurrence days of complete melting period increased at a rate of 2.68 d/10 a.In terms of spatial distribution,except for the complete freezing period,the trend of decreasing gradually from northeast to southwest,the other three phases showed a trend of gradual increase from northeast to southwest.(3)The area of different soil freeze-thaw states affected by climate change and human activities together accounted for the largest proportion,followed by climate change alone,and human activities alone accounted for the smallest.[Conclusion]The spatiotemporal differentiation and variation patterns of near-surface soil freeze-thaw state are obvious.The driving forces of different soil freeze-thaw states in different regions are different,which is of great significance for ecological environment protection and infrastructure construction in Inner Mongolia.In the future,more in-depth analysis should be conducted on the impacts of climate change and human activities on it.关键词
地表土壤冻融/时空演变特征/内蒙古/气候变化/人类活动Key words
near-surface soil freezing and thawing state/characteristics of spatiotemporal evolution/Inner Mongolia/climate change/human activities分类
农业科学引用本文复制引用
田鑫,萨楚拉,孟凡浩,罗敏,王牧兰,张翔,张昊琛..近40年内蒙古近地表土壤冻融状态时空演变特征解析[J].水土保持研究,2025,32(1):148-159,12.基金项目
国家自然科学基金(42361024,42261079) （42361024,42261079）
内蒙古自治区自然科学基金(2022MS04004) （2022MS04004）
内蒙古自治区重点研发和成果转化计划项目(2022YFDZ0061) （2022YFDZ0061）
内蒙古师范大学基本科研业务费专项资金资助(2023JBPT004,2022JBBJ014,2022JBQN093) （2023JBPT004,2022JBBJ014,2022JBQN093）
