| 引用本文: | 刘明亮,王振龙,吕海深,等.五道沟地区1971-2020年0-320cm地温月尺度变化及对气温的响应[J].灌溉排水学报,0,():-. |
| liumingliang,wangzhenlong,lvhaishen,et al.五道沟地区1971-2020年0-320cm地温月尺度变化及对气温的响应[J].灌溉排水学报,0,():-. |
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| 五道沟地区1971-2020年0-320cm地温月尺度变化及对气温的响应 |
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刘明亮1, 王振龙2, 吕海深1, 汪跃军3, 周超2, 赵雯颉1, 胡永胜2, 曾娟1, 刘明月1, 姚婷月1
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1.河海大学;2.安徽省水利部淮委水利科学研究院 五道沟水文实验站;3.淮河水利委员会水文局信息中心
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| 摘要: |
| 【目的】研究五道沟地区1971-2020年0~320 cm层月平均地温变化及其对气温的响应。【方法】利用五道沟水文实验站1971-2020年月平均气温和月平均0~320 cm（0、10、40、80、160、320 cm）土层地温资料，采用线性倾向估计、M-K检验以及Morlet小波分析等方法，分析了该区近50年0~320 cm土层温度月尺度变化规律及其对气温的响应关系。【结果】（1）五道沟实验站1971-2020年，各层地温趋势变化，除6-9月份，其余月份均呈增加的趋势，最大增幅在3月份，最小增幅在10月份；各层地温中，0~160 cm总体呈上升的趋势，0 cm增幅最大，160 cm增幅最小，320 cm总体呈下降趋势。（2）利用小波分析可知，各层年均地温具有明显的3~6、8~12 a和15~25 a尺度周期变化，其中以3~6 a和8~12 a尺度为主周期。（3）M-K突变检验表明，0、10、80、160和320 cm各层年均地温均发生突变，突变的年份分别在2013、2016、2019、2017和1972年左右，其中0、10和80 cm层突变后地温显著性上升。（4）不同深度的月平均地温对气温变化的响应存在明显的差异，0~80 cm地温对气温变化较为敏感；160 cm地温对气温变化敏感性较弱；320 cm地温基本不受气温变化的影响。0~160 cm各层年平均地温间的相关性较好；320 cm地温与其余层地温相关性较差。【结论】各层月平均地温总体呈上升的趋势，不同月份地温具有不同的变化趋势；各层年平均地温序列具有明显的突变以及周期变化特征；随着深度的增加各层月平均地温与气温的相关性逐渐减小。 |
| 关键词: 地温;气温;月尺度;响应;五道沟; |
| DOI： |
| 分类号:P468.0 |
| 基金项目:国家重点研发计划项目(2019YFC1510504), 国家自然科学基金重点项目(41830752)；国家自然科学基金面上项目(42071033） |
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| Monthly variation of ground temperature and its response to temperature in Wudaogou area from 1971 to 2020 |
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liumingliang1, wangzhenlong2, lvhaishen1, wangyuejun3, zhouchao2, zhaowenjie1, huyongsheng2, zengjuan1, liumingyue1, yaotingyue1
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1.Hohai University;2.Wudaogou hydrological experimental station, Huaiwei Water Science Research Institute, Ministry of Water Resources, Anhui province;3.Huai River Water Resources Commission
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| Abstract: |
| 【Objective】The variation of monthly average ground temperature in 0~320 cm layer and its response to air temperature in Wudaogou area from 1971 to 2020 were studied.【Method】Using the monthly mean air temperature and the monthly mean ground temperature data of 0~320 cm (0, 10, 40, 80, 160 and 320 cm) at Wudaogou hydrological experimental station from 1971 to 2020, the methods of linear trend estimation, M-K test and Morlet wavelet analysis were used, the monthly variation of soil temperature and its response to air temperature in 0~320 cm soil layer in recent 50 years were analyzed. 【Result】(1) In the 50 years of Wudaogou Experimental Station, the ground temperature trend of each layer has changed. Except for June to September, the other months showed an increasing trend, with the largest increase in March and the smallest increase in October; 0~160 cm showed an overall upward trend, 0cm had the largest increase, 160cm had the smallest increase, and 320cm showed an overall downward trend. (2) according to the wavelet analysis, there are obvious 3~6, 8~12 and 15~25 a scale cycles in each layer of the ground temperature, in which the 3~6 a and 8~12 a scale cycles are dominant. (3) M-K mutation test showed that the ground temperature of 0, 10, 80, 160 and 320 cm had mutation, and the mutation years were about 2012, 2017, 2016, 2019 and 1972 respectively. (4) There are obvious differences in the response of monthly average ground temperature to temperature change at different depths. The ground temperature at 0 ~ 80 cm is more sensitive to temperature change; The sensitivity of 160 cm ground temperature to temperature change is weak; The ground temperature of 320 cm is basically not affected by the change of air temperature. The correlation between the annual average ground temperature of 0 ~ 160 cm layers is good; The correlation between the ground temperature of 320 cm and that of other layers is poor.【Conclusion】the monthly average ground temperature of each layer generally shows an upward trend, and the ground temperature has different variation trends in different months; The annual average ground temperature series of each layer has obvious characteristics of mutation and periodic change; With the increase of depth, the correlation between monthly average ground temperature and air temperature decreases gradually. |
| Key words: ground temperature; air temperature; monthly scale; response; Morlet wavelet analysis; |
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