摘要
利用1960-2014年55年武川县气象站观测资料,分析了近49年武川县冻土的特征变化与近55年无霜期变化情况。结果表明,武川县年最大冻土深度总体上呈减少趋势,"无冻土期"呈增加趋势;无霜期呈增加趋势。同时根据冻土初日、冻土终日、无霜期初日和无霜期终日等要素变化,详细分析了冻土与无霜期的季节性变化特征。
The variation characteristics of frozen soil in recent 49 years and frost free period in recent 55 years were analyzed based on the data collected from meteorological observation of Wuchuan County from 1960 to 2014. A general decreasing tendency of annual maximum frozen soil depth and a general increasing tendency of ＆quot;non frozen soil period＆quot;and frost free period were observed in this study. Based on the data of first date of frozen soil, the last date of frozen soil, the first date of frost free period, the last date of frost free period and other factors, the variation characteristics of frozen soil and frost free period were detailed analyzed.
出处
《内蒙古农业科技》
2015年第3期83-84,92,共3页
Inner Mongolia Agricultural Science and Technology
关键词
冻土
最大冻土深度
“无冻土期”
无霜期
Frozen soil
Maximum depth of frozen soil
＂Non frozen soil period＂
Frost free period
