川西高原积雪时空变化以及稳定性积雪分布特征分析  

Spatial and Temporal Variations of Snowpack on the Western Sichuan Plateau and Analysis of Its Stabilizing Snowpack Pattern

作　　者：聂禄敏 张子晗 陆恒 NIE Lumin;ZHANG Zihan;LU Heng(Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources,Sichuan Normal University,Chengdu 610066,Sichuan;The Faculty Geography Resource Sciences,Sichuan Normal University,Chengdu 610101,Sichuan)

机构地区：[1]四川师范大学西南土地资源评价与监测教育部重点实验室,四川成都610066 [2]四川师范大学地理与资源科学学院,四川成都610101

出　　处：《四川师范大学学报（自然科学版）》2025年第1期72-81,共10页Journal of Sichuan Normal University（Natural Science）

基　　金：教育部人文社会科学项目(21YJCZH099);四川省科技厅基础应用研究项目(2020YJ0118);四川省科技计划项目(2023NSFSC1979)。

摘　　要：基于MODIS积雪数据,通过GIS分析以及Mann-Kendall趋势检验法对川西高原2002—2020年积雪的时空分布及其变化特征进行研究分析,并结合3个区域不同时期共39幅Landsat遥感影像,分别对川西高原全区和典型下垫面的稳定积雪区的空间分布格局进行探讨.结果表明:1)川西高原季节性积雪主要分布在高海拔山区以及高原西北部,在高原内部和河谷地区分布较少;2)川西高原季节性积雪年积雪面积分布呈下降趋势,其中冬季积雪的下降尤为明显;3)川西高原稳定积雪区主要分布在高海拔地区,主要是区内极高山区。Based on the MODIS snowpack data,the spatial and temporal distribution of snowpack and its change characteristics in the Western Sichuan Plateau from 2002 to 2020 were analyzed by GIS analysis and Mann-Kendall trend test,and combined with a total of 39 Landsat remote sensing images from three regions in different time periods,where we explored the spatial distribution pattern of snowpack areas in the whole area of the Western Sichuan Plateau and in the typical subsurface,respectively.The spatial distribution pattern of the snowpack area is discussed.The results show that:1)the seasonal snowpack on the Western Sichuan Plateau is mainly distributed in the high-elevation mountainous areas and the northwestern part of the plateau,with less distribution in the interior of the plateau and the river valleys;2)the annual distribution of the seasonal snowpack on the Plateau has shown a decreasing trend,with the decrease of the seasonal snowpack in winter being particularly obvious;3)the stable snowpack on the Plateau is mainly distributed in the high-elevation areas,mainly in the extremely high mountainous areas of the region.

关 键 词：积雪 时空格局 Mann-Kendall趋势检验 川西高原 

分 类 号：K903[历史地理—人文地理学]