Journal of Glaciology and Geocryology

Figure/Table detail

Characteristics and mechanisms of snow cover changes in the black soil region of Northeast China in hydrological years from 1979 to 2020

WANG Jinxia, ZHANG Lijuan, WANG Fang, HUANG Yutao, ZHAO Yufeng, LIU Jie, CHENG Xiyao, WANG Jiaxin, ZHAO Lingyue, YI Qiujing, QIN Kaifeng

Journal of Glaciology and Geocryology, 2025, 47(1): 98-110. DOI: 10.7522/j.issn.1000-0240.2025.0008

积雪物候	分类	时间	面积占比/%
积雪初日	较早初日	10月23日—11月24日	28.81
	正常初日	11月25日—12月25日	56.38
	较晚初日	12月26日—次年1月27日	14.81
积雪终日	较早终日	12月30日—次年2月10日	8.82
	正常终日	2月11日—3月23日	49.19
	较晚终日	3月24日—5月4日	41.99
稳定积雪期	较短积雪期	29~80 d	35.47
	正常积雪期	81~130 d	37.87
	较长积雪期	131~182 d	26.66

Table 3 Spatial distribution of snow cover in the black soil region of Northeast China in hydrological years from 1979 to 2020 in terms of area share

Other figure/table from this article

Fig. 1 Map of the study area ［Revised plot plan review number： GS（2024）0650］
Table 1 Interannual variations in snow depth in the black soil region of Northeast China in hydrological years from 1979 to 2020
Fig. 2 Spatial distribution of mean annual snow depth in the black soil region of Northeast China in hydrological years from 1979 to 2020
Fig. 3 Spatial distribution of average snow depth by months ［January （a）， February （b）， March （c）， April （d）， May （e）， September （f）， October （g）， November （h）， December （i）］ and seasons ［spring （j）， autumn （k）， winter （l）］ in the black soil region of Northeast China in hydrological years from 1979 to 2020
Fig.4 Spatial variation rate of annual （a）， spring （b）， and March （c） and April （d） average snow depth in the black soil region of Northeast China in hydrological years from 1979 to 2020
Note：The area marked with dots in the figure is the area that passes the 95% significance test （the same as below）.
Table 2 Spatial variation in average snow depth in March， April， and spring in the black soil region of Northeast China in hydrological years from 1979 to 2020 in terms of area share
Fig. 5 Interannual variations of the first day （a）， the last day of （b） and stable period （c） of snow cover in the black soil region of Northeast China in hydrological years from 1979 to 2020
Fig. 6 Spatial distribution of the first day （a）， the last day （b）， and stable period （c） of snow cover in the black soil region of Northeast China in hydrological years from 1979 to 2020
Fig. 7 Spatial variations of the first day （a）， the last day （b）， and stable period （c） of snow cover in the black soil region of Northeast China in hydrological years from 1979 to 2020
Table 4 Spatial variation of snow cover in the black soil region of Northeast China in hydrological years from 1979 to 2020 in terms of area share
Table 5 Interannual variation of average snow cover area by months and seasons in the black soil region of Northeast China in hydrological years from 1979 to 2020
Fig. 8 Spatial distribution of mean annual snow cover area in the black soil region of Northeast China in hydrological years from 1979 to 2020
Fig. 9 Spatial distribution of average stable snow cover area by months ［January （a）， February （b）， March （c）， April （d）， October （e）， November （f）， December （g）］ and seasons ［spring （h）， autumn （i）， winter （j）］ in the black soil region of Northeast China in hydrological years from 1979 to 2020
Table 6 Spatial distribution of the average stable snow cover area in the black soil region of Northeast China by months and seasons in hydrological years from 1979 to 2020 in terms of area share
Fig. 10 Spatial variation of mean annual snow cover area in the black soil region of Northeast China in hydrological years from 1979 to 2020

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Figure/Table detail