| 曹 兴,魏文寿,陈荣毅,季 枫,杨举芳,徐根生.古尔班通古特沙漠腹地秋季浅层地温特征分析[J].沙漠与绿洲气象,2010,4(2):26~31 |
| 古尔班通古特沙漠腹地秋季浅层地温特征分析 |
| The Analysis of Shallow-ground Temperature Features in Autumn |
| 投稿时间：2009-10-15 |
| DOI： |
| 中文关键词: 古尔班通古特 秋季 地温 特征 |
| 英文关键词:Gurbantonggut autumn ground temperature features |
| 基金项目: |
|
| 摘要点击次数: 422 |
| 全文下载次数: 565 |
| 中文摘要: |
| 以古尔班通古特沙漠腹地为试验区，利用2009年9－10月三种不同植被覆盖下浅层地温数据，分析了秋季地温的变化特征以及降水和人类活动对地温的影响。结果表明：秋季地温呈现波动的下降过程，梭梭地温降幅达8.1℃，为最大。晴天时，梭梭、苜蓿、麻黄的地温日变化为标准的波形，变化过程明显。而多云天气时的地温白天上升幅度小，甚至下降，其日变化幅度远小于晴天。地温的昼夜变化过程差异明显，白天地温均值高于夜间。此外降水、灌溉使得地温下降，在地温随后的1~2d后逐步回升，而苜蓿的收割导致地温日变化更加明显。天气状况、降水、灌溉等可以造成地温峰值位相提前或滞后，但谷值的位相却相对稳定在08时前后。 |
| 英文摘要: |
| Taking Gurbantonggut Desert hinterland as test region, and using the data of shallow-ground soil temperature under three types of vegetation overcast from September to October 2009, this paper analysed the change character of ground temperature in autumn and the impact of precipitation and human activity on ground temperature. The result shows that:the ground temperature in autumn descend with undulate, the Haloxylon ammoden-dron ground temperature has the most descending amplitude of 8.1℃. On fine day, the ground temperature of Haloxylon ammoden-dron,Medlcago and Ephedra przewalskii presents standard undulate,and the change process is evident.while ground temperature on cloudy rise little,even descend sometimes,so the daily change is much less than that on fine day. The difference of day-night change process of ground temperature is evident,the daily soil temperature is higher than that at night. Furthermore precipitation and irrigation make the ground temperature fell,but it returnes after 1～2 days,Moreover, Medlcago reap make the vibration of ground temperature more evidently.Ground temperature maximum move up or lag by influence of weather condition,precipition and irrigation,but the miminum steadily occur after about 08:00 am. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
|
|