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요약정보
格尔木地区50年来冻土变化特征分析
Resource Type
Academic Journal
Authors
都占良
;
许学莲
;
李淑萍
;
李向涛
;
马秀兰
;
增国云
Source
青海环境 / Journal of Qinghai Environment
. 33(3):120-123
Subject
最大冻土深度
冻土日数
变化特征
格尔木地区
Language
Chinese
ISSN
1007-2454
Online Access
Find it @ DONGA
초록
利用格尔木地区 1971-2020 年冻土资料分析年和四季冻土变化特征.结果表明:格尔木地区年最大冻土深度总体呈不明显减小趋势.呈现下降—上升—下降—上升四个阶段.春季最大冻土深度总体呈增加趋势,未通过显著性检验.秋季和冬季最大冻土深度均呈减小趋势,秋季通过 0.01 的显著性检验,冬季未通过显著性检验.冻土日数逐年呈减少趋势,2014 年后冻土日数减少明显.春、秋、冬季平均气温从 1971-2010 年逐年代升高,导致各年代冻土深度、冻土日数也逐年代减少.冻土初日逐年代推迟,冻土终日逐年代际提前.
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