| 塔城地区1960-2018年季节性冻土的变化特征及影响因子分析 |
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| 引用本文： | 井立红,高婧,秦榕,井立军,董海英,刘桂英,王金辉,阿来依?艾丁.塔城地区1960-2018年季节性冻土的变化特征及影响因子分析[J].新疆气象,2019,13(3):88-93. |
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| 作者姓名： | 井立红 高婧 秦榕 井立军 董海英 刘桂英 王金辉 阿来依?艾丁 |
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| 作者单位： | 塔城地区气象局,乌苏市气象局,新疆气象局信息中心,乌苏市气象局,塔城地区气象局,塔城地区气象局,克孜勒苏柯尔克孜自治州气象局,塔城地区气象局 |
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| 摘 要： | 利用1960-2018年塔城地区9个气象观测站冻土深度及同期气温观测资料，采用数理统计方法分析了其分布状况、变化特征及其与气象因子的关系，结果表明：近59a塔城地区最大冻土深度均在120cm以上，大值区主要分布在中部、南部及托里，冻结初日最早出现于9月上旬，最晚结束于5月中旬；年最大冻土深度除额敏以4.00cm/10a的速率显著增多外，其余各站均表现为减少趋势，其中克拉玛依减幅最大；月际变化中1月、2月、5月、9月、10月仅个别站表现为增多趋势，其余站表现为减少趋势，而3月、4月、11月、12月9站均表现为一致的减少趋势；塔城地区最大冻土深度年际变异系数均表现为中等变异性，表明其对气候变化的响应较敏感；平均冻土深度年代际变化呈现“浅-深-浅-浅-浅-浅”的变化趋势，从1980年代开始平均冻土深度逐渐变浅；影响最大冻土深度变化的因子主要有年（月）平均气温、平均最低气温及气温日较差。
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| 关 键 词： | 季节性冻土 变化特征 影响因子 |
| 收稿时间： | 2018/4/14 0:00:00 |
| 修稿时间： | 2018/6/5 0:00:00 |
the distribution and change characteristics of seasonal frozen soil in Tacheng area during 1960-2018 |
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| Institution: | Tacheng meteorological Bureau of Xinjiang,Usu meteorological Bureau of Xinjiang,Xinjiang Meteorological information Center,Usu meteorological Bureauof Xinjiang,Tacheng meteorological Bureau of Xinjiang,Tacheng meteorological Bureau of Xinjiang,Kezils meteorological Bureau of Xinjiang,Tacheng meteorological Bureau of Xinjiang |
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| Abstract: | Abstract: based on the depth of frozen soil and temperature data of 9 meteorological observatories during 1960-2009 in Tacheng area, Using the method of mathematical statistics they were analyzed,such as the distribution and variation characteristics ,the relationship between seasonal frozen soil and else meteorological factors . The results showed that recently 50 years the maximum depth of frozen soil were above 120 cm, and the large value areas mainly were located in the middle and south region and Tuoli station . The beginning date of frozen soil appeared in the early September and ending data in the mid-May. The annual maximum depth of frozen soil was not increase significantly in Emin, the other stations were decreasing in which the most significant region located in Shawan ( -9.24 cm / 10 a).The maximum depth of frozen soil were decreasing in March, April, May and November , the decreasing rate was the first in April and the second in March. and the coefficient of variation of the maximum depth was medium variability in Tacheng and Wusu station. It show that the response were very sensitive to climate change. The Interdecadal variation of average depth has changed alternately ( less-more-less-less-less), in which the average depth was the largest in the 1970s, secondly in the1960s.Since 1980s the average depth of frozen soil has gradually decreased.There were the main factors on variation of the maximum depth of frozen soil,such as the annual (monthly) mean temperature, the average minimum temperature and the daily range of temperature. |
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| Keywords: | seasonal frozen soil Distribution Variation characteristics |
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