| 引用本文: | 李岳坦,李小雁,崔步礼,孙久虎.2010.青海湖流域及周边地区浅层地温对全球变化的响应[J].地球环境学报,(3):219-225 |
| LI Yue-tan,LI Xiao-yan,CUI Bu-li,SUN Jiu-hu.2010.Response of shallow geotemperature to global change over Qinghai Lake Basin from 1961 to 2007[J].Journal of Earth Environment,(3):219-225 |
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| 摘要: |
| 利用青海湖流域及周边8 个气象站1961~2007 年的0~20 cm 浅层地温资料，采用气候倾
向率等气候统计学分析方法，对青海湖流域及周边地区近47 a 来年、季平均地温的变化趋势及气
候突变进行了研究。结果表明，区域内0、5、10、15 和20 cm 浅层地温均呈现升高的趋势，升幅分别
为0.30~0.60℃·(10a)-1、0.22~0.51℃·(10a)-1、0.28~0.58℃·(10a)-1、0.30~0.59℃·(10a)-1 和0.32~0.59℃
·(10a)-1；近47 a 来四季平均浅层地温整体均呈现升高趋势，升幅为0.35~0.52℃·(10a)-1，以冬季
升幅最小，春季和夏季升幅最大，平均浅层地温升温幅度有增大的趋势；绝大部分站点的年、季
平均浅层地温均呈现显著的升高趋势，升幅接近甚至高于同时期的平均气温增温幅度；年平均浅
层地温除都兰站在20 世纪60~80 年代呈现出波动性的升高趋势以外，其它各站点均呈逐年代升
高的趋势，20 世纪60 和70 年代的平均浅层地温明显偏低，80 年代相对正常，90 年代偏高，进
入21 世纪初后，各站的平均浅层地温均偏高0.6℃以上；天峻、都兰和海晏的年、季平均地温均
没有发生突变，其它各站浅层年、季平均地温的突变时间绝大部分站点都发生在El Niňo 年或La
Niňa 年，说明青海湖流域及周边地区浅层地温的变化受ENSO 事件的影响比较明显。 |
| 关键词: 青海湖流域 浅层地温 变化趋势 气候突变 全球变化 |
| DOI：10.7515/JEE201003010 |
| CSTR： |
| 分类号:P467 |
基金项目:“十一五”国家科技支撑计划项目(2007BAC30B02)；教育部新世纪优秀人才支持计划(NCET-08-0056)
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| Response of shallow geotemperature to global change over Qinghai Lake Basin from 1961 to 2007 |
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LI Yue-tan1, LI Xiao-yan1, CUI Bu-li1, SUN Jiu-hu2
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1.State Key Laboratory of Earth Surface Processes, Beijing 100875, China;
2. Shandong Provincial Land Surveying and Mapping Institute, Ji′nan 250013, China
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| Abstract: |
| The changing tendency and abrupt change of annual and seasonal shallow geotemperature over
Qinghai lake basin were investigated in this paper with the obsvervational data from 8 meteorological
stations during the period of 1961~2007 using modern statistical diagnostic methods, such as the linear
trend annlysis. The results show that the increasing tendency of mean geotemperature at diffenent
depth can be seen in all the stations over Qinghai lake basin, with the increasing rate of 0.30~0.60 ℃·(10a)-1,
0.22~0.51℃·(10a)-1, 0.28~0.58℃·(10a)-1, 0.30~0.59℃·(10a)-1 and 0.32~0.59℃·(10a)-1 respectively. In terms
of average over Qinghai lake basin, the annual shallow geotemperature increased significantly during
the last 47 years, with an increasing rate of 0.35~0.52℃ ·(10a)-1, the increasing rate had a minimum in
winter and a maximum in spring and summer, and the increasing tendency of the increasing rate can
also be found in the region, the seasonal and annual mean shallow geotemperature of most stations over
Qinghai lake basin increased significantly, the seasonal and annual geotemperature was equal to and
even lager than the air temperature of the same period. The annual mean geotemperature of Dulan station
had and fluctuant increasing tendency from 1960s to 1980s, while all of the other station had the decadal
increase; the geotemperature was lower in the 1960s and 1970s, normal in the 1980s, and higher in the
1990s and especially after the year of 2000. The annual and seasonal shallow mean geotemperature had no abrupt change in Tianjun, Dulan and Haiyan, but the abrupt change occurred in other stations in the
year of El Niňo or La Niňa happened, and this means the changing of the shallow geotemperature over
Qinghai lake basin was significantly affected by ENSO. |
| Key words: Qinghai lake basin shallow temperature changing tendency climate abtupt change global
change |
