| 河北省冻土气候变化初探 |
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| 引用本文： | 李元华,安月改,田国强.河北省冻土气候变化初探[J].山东农业大学学报(自然科学版),2005,36(3):445-449. |
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| 作者姓名： | 李元华 安月改 田国强 |
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| 作者单位： | 河北省气象局,河北,石家庄,050021;河北省气象局,河北,石家庄,050021;河北省气象局,河北,石家庄,050021 |
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| 摘 要： | 本文利用河北省1961--2000年68个站点地面气象观测记录中的冻土资料，通过对河北省地面冻结日期、解冻日期、冻结日数及平均最大冻土深度的时空分布特征进行分析，以此来解释冻土对气候变化的响应。结果发现：近40a来，地面冻结日期呈现略微推迟的态势；地面解冻日期呈明显提前的趋势；地面冻结日数相应减少；累年平均最大冻土深度由北到南逐渐减小；全省历年平均最大冻土深度变化呈减小趋势，各分区的变化趋势与全省的变化趋势基本相同．冀北高原区变化幅度最大。
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| 关 键 词： | 冻土 气候变化 趋势 |
| 文章编号： | 1000-2324(2005)03-0445-05 |
| 收稿时间： | 09 9 2004 12:00AM |
| 修稿时间： | 2004年9月9日 |
STUDY ON CLIMATIC CHANGE OF FROZEN SOIL IN HEBEI |
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| LI Yuan-hua,AN Yue-gai,TIAN Guo-qiang.STUDY ON CLIMATIC CHANGE OF FROZEN SOIL IN HEBEI[J].Journal of Shandong Agricultural University,2005,36(3):445-449. |
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| Authors: | LI Yuan-hua AN Yue-gai TIAN Guo-qiang |
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| Institution: | Hebei Meteorology Bureau, Shijiazhuang 050021, Hebei, China |
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| Abstract: | Based on the available observation data from 68 meteorological stations in Hebei Province from 1961to 2000, the climatic change characteristics of dates of frozen soil, of thaw soil, days of frozen soil and average maxmal depth of frozen soil in this area have been analyzed. The results showed that the trend of change of the dates of frozen soil is slightly defered in the Hebei Province, and the trend of change of the dates of thaw soil is earlier. The days of frozen soil are reduced. The maxmal depths of frozen soil are decreased from north to south. In the different area, the trends of change are similar, but the degree of charging is maximum in the north altiplano. |
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| Keywords: | Frozen soil climatic change trends of change |
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