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地球科学进展  2007, Vol. 22 Issue (6): 625-635    DOI: 10.11867/j.issn.1001-8166.2007.06.0625
西北气候变化与生态研究     
陇东黄土高原土壤储水量与蒸发和气候研究
王润元,杨兴国,张九林,王德民,梁东升,张立功
中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,甘肃 兰州 730020
A Study of Soil Water and Land Surface Evaporation and Climate on Loess Plateau in the Eastern Gansu Province
WANG Run-yuan, YANG Xing-guo, ZHANG Jiu-lin, WANG De-min, LIANG Dong-sheng, ZHANG Li-gong
Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Change and Disaster Reduction of CMA, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China
 全文: PDF(2846 KB)  
摘要:

利用长期土壤湿度和气候观测资料,分析了陇东黄土高原陆面蒸发和土壤储水量的年际变化及其与气候因素的关系。在近20年来,陇东黄土高陆面蒸发和土壤储水量的年际变化主要表现为逐年减少的趋势,个别季节表现为增加的趋势;年际变化的速率具有季节和空间差异性。陆面蒸发和土壤储水量随着温度的升高而减少,随着降水的增加而增加。但是陆面蒸发和土壤储水量与温度的关系不密切,与降水的关系密切。变暖不是陇东黄土高陆面蒸发和土壤储水量逐年减少的气候因素,降水的逐年减少才是陇东黄土高原陆面蒸发和土壤储水量逐年减少的气候因素。陇东黄土高原的土壤干旱化与地表蒸发关系不大,降水的逐年减少可能是土壤干旱化的根本原因。

关键词: 黄土高原陆面蒸发陇东气候土壤储水量    
Abstract:

Using long-term observation data about climate and soil moisture, the soil water and the land surface evaporation in the last 20 years on loess plateau in eastern Gansu were estimated and the tendency of their variations and the relationship between their variations and climate were analyzed. The results indicated that the inter-annual variation of both soil water and land surface evaporation mainly showed a diminishing trend and an increasing tendency in the few seasons. The rates of inter-annual variation of soil water and land surface evaporation were varying in different seasons and regions. The soil water and the land surface evaporation decreased with temperature rising and increased with precipitation increasing. Response of inter-annual variation of soil water and evaporation to temperature was not sensitive, and response of them to precipitation was very sensitive. The rates of inter-annual variation of soil water and land surface evaporation were keeping with the rates of inter-annual variation of precipitation in different seasons and regions. The precipitation was the main climate factor affecting inter-annual variation of soil water and land surface evaporation.

Key words: Loess plateau in the eastern Gansu    Soil water    Land surface evaporation    Climate.
收稿日期: 2007-04-15 出版日期: 2007-06-10
:  P463.23  
基金资助:

科技部科研院所社会公益研究专项“西北农作物对气候变化的响应及其评价方法”(编号:2005DIB3J100),国家科技攻关计划西部开发科技行动重大项目“祁连山空中云水资源开发利用研究”(编号:2004BA901A16-03);国家自然科学基金项目“西北干旱荒漠区大气边界层厚度特征及其形成机制研究”(编号:40575006)共同资助.

通讯作者: 王润元(1965-),男,甘肃西和县人,副研究员,主要从事气候变化与生态和陆面过程研究.E-mail: wryww@163.com     E-mail: wryww@163.com
作者简介: 王润元(1965-),男,甘肃西和县人,副研究员,主要从事气候变化与生态和陆面过程研究.E-mail: wryww@163.com
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引用本文:

王润元,杨兴国,张九林,王德民,梁东升,张立功. 陇东黄土高原土壤储水量与蒸发和气候研究[J]. 地球科学进展, 2007, 22(6): 625-635.

WANG Run-yuan, YANG Xing-guo,ZHANG Jiu-lin, WANG De-min, LIANG Dong-sheng, et al. A Study of Soil Water and Land Surface Evaporation and Climate on Loess Plateau in the Eastern Gansu Province. Advances in Earth Science, 2007, 22(6): 625-635.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2007.06.0625        http://www.adearth.ac.cn/CN/Y2007/V22/I6/625

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