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地球科学进展  2008, Vol. 23 Issue (6): 570-579    DOI: 10.11867/j.issn.1001-8166.2008.06.0570
研究论文     
陆面过程模式SIB2与包气带入渗模型的耦合及其应用
周剑1,3,李新1,王根绪1,2,潘小多1
1. 中国科学院寒区旱区环境与工程研究所,甘肃 兰州 730000;2. 中国科学院成都山地灾害与环境研究所,四川 成都 610041;3. 兰州大学资源环境学院,甘肃 兰州 730000
Coupled Land Surface Process Pattern SIB2 with the Unsaturated Seepage Model and Its Application
Zhou Jian1,3,Li Xin1,Wang Genxu1,2,Pan Xiaoduo1
1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 3. Resources and Environment Institute of Lanzhou University, Lanzhou 730000, China  
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摘要:

土壤含水量对陆—气相互作用过程中的能—水平衡计算以及降雨、农业灌溉对地下水补给的研究起着关键的作用。但现阶段大多数陆面过程模式对土壤含水量的计算采用一维水桶模式,忽略了流域尺度上的侧向补给、地下水位的变化、包气带土壤的非线性渗透特性对土壤含水量的影响。针对这一问题,在国内外研究较为成熟的饱和—非饱和理论的基础上,编程实现了包气带土壤水分传输方程的求解,并与陆面过程模式(SIB2)相耦合,建立起研究分层包气带土壤水分运移、非稳态的地下水位、和地表蒸散发之间定量关系的模型。最后,利用建立的耦合模型,以河西走廊黑河流域中游临泽农业综合观测场的灌溉试验为例,模拟干旱内陆平原区小麦生长期间定额灌水条件下土壤含水量的变化。计算结果表明:模型能够准确计算瞬时土壤含水量、非稳态的地下水位,并对小麦生长过程中的耗水量进行估算,进而为农业合理灌溉提供了科学的理论基础。

关键词: 陆面过程饱和—非饱和入渗理论SIB2模型蒸发蒸腾土壤含水量    
Abstract:

The soil moisture content plays the vital role in the interaction of land-gas and balance of energy-water of surface land. However, in recently, the one dimensional bucket pattern is used as many land surface process models to compute the soil moisture content, which neglects the problems that the lateral supplies, the groundwater level and the penetration coefficient are function to saturation. Therefore, this article, based on the saturated-unsaturated theory which is domestic and mature over world, proposed simulation method of coupling the package of soil moisture transmission model and the land surface process pattern, and expressed dynamically the soil moisture migration process and change of groundwater level change under unstable state. Using the established coupling model, taking the Hexi corridor-Heihe basin middle reaches as the example, this article also simulated changes on the soil moisture content and the groundwater level under condition of different irrigating during wheat growth period in arid inland region, the results indicated the model established in this article was allowed to calculate changes of the instant soil moisture content and the groundwater level, and estimate the water consumption during the wheat growth period, then provide an rational academic basement for the reasonable agricultural irrigation

Key words: Land surface process    Infiltrated theory of the saturated and unsaturated soil    SIB2    Evapotranspiration    Soil moisture content.
收稿日期: 2008-04-21 出版日期: 2008-06-10
:  P404  
基金资助:

中国科学院西部行动计划(二期)项目“黑河流域遥感—地面观测同步试验与综合模拟平台建设”(编号:KZCX2-XB2-09);国家自然科学基金重点项目“典型山地水文生态系统水循环多尺度耦合的对比试验研究”(编号:40730634)资助.

通讯作者: 周剑     E-mail: zhoujianmaomi@163.com
作者简介: 周剑(1979-),男,浙江杭州人,助理研究员,主要从事地下水、陆面过程的研究.E-mail:zhoujianmaomi@163.com
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引用本文:

周剑,李新,王根绪,潘小多. 陆面过程模式SIB2与包气带入渗模型的耦合及其应用[J]. 地球科学进展, 2008, 23(6): 570-579.

Zhou Jian,Li Xin,Wang Genxu,Pan Xiaoduo. Coupled Land Surface Process Pattern SIB2 with the Unsaturated Seepage Model and Its Application. Advances in Earth Science, 2008, 23(6): 570-579.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2008.06.0570        http://www.adearth.ac.cn/CN/Y2008/V23/I6/570

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