TY - JOUR
T1 - Simulation of freezing and thawing soils in Inner Mongolia Hetao Irrigation District, China
AU - Li, Ruiping
AU - Shi, Haibin
AU - Flerchinger, G. N.
AU - Akae, Takeo
AU - Wang, Changsheng
N1 - Funding Information:
Support for this research was provided by Inner Mongolia Natural Science Foundation ( 200508010303 , 2011BS0301 ), key projects in the National Science &Technology Pillar Treatment ( 2007BAD88B04 , 2011BAD29B03 ), and Science &Technology Innovation Team Foundation of Inner Mongolia Agricultural University, China ( NDTD2010-7 ). The authors are grateful to the Shahaoqu Experimental Station, Inner Mongolia Hetao Irrigation District Jiefangzha Department, China, and also to Liu Hongyun, Zhang Xiangzhu, Li Zhengzhong, and Xue Zhu for their assistance with field experimental work.
PY - 2012/3
Y1 - 2012/3
N2 - Inner Mongolia Hetao Irrigation District, in north of China, is typical of seasonal frozen soil areas in the region. Irrigation in autumn is required to leach soil salt and to provide a reserve of soil water for the next year's crop. However, improper autumn irrigation results in the secondary salinization of soil. The objective of this study is to simulate soil water and heat dynamics during winter period with the one-dimensional Simultaneous Heat and Water (SHAW) model to assess its capability for simulating overwinter water storage. SHAW model soil parameters were calibrated by data of 1995-1996 and 2002-2004 and validated by data of 1996-2001 and 2005-2006 using field measured soil water contents and temperatures during freezing and thawing periods. Using calibrated and validated soil parameters, the paper simulates the process of soil freezing-thawing, and the dynamic variation of moisture-heat transfer, including soil water content, temperature, frost depth, soil evaporation, and water flux in the seasonal freezing-thawing period. These are useful to determine proper autumn irrigation management, and can be used in future research to address overwinter solute migration to reduce soil secondary salinization.
AB - Inner Mongolia Hetao Irrigation District, in north of China, is typical of seasonal frozen soil areas in the region. Irrigation in autumn is required to leach soil salt and to provide a reserve of soil water for the next year's crop. However, improper autumn irrigation results in the secondary salinization of soil. The objective of this study is to simulate soil water and heat dynamics during winter period with the one-dimensional Simultaneous Heat and Water (SHAW) model to assess its capability for simulating overwinter water storage. SHAW model soil parameters were calibrated by data of 1995-1996 and 2002-2004 and validated by data of 1996-2001 and 2005-2006 using field measured soil water contents and temperatures during freezing and thawing periods. Using calibrated and validated soil parameters, the paper simulates the process of soil freezing-thawing, and the dynamic variation of moisture-heat transfer, including soil water content, temperature, frost depth, soil evaporation, and water flux in the seasonal freezing-thawing period. These are useful to determine proper autumn irrigation management, and can be used in future research to address overwinter solute migration to reduce soil secondary salinization.
KW - Energy fluxes
KW - Freezing and thawing soils
KW - SHAW model
KW - Simulation analysis
KW - Water fluxes
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U2 - 10.1016/j.geoderma.2012.01.009
DO - 10.1016/j.geoderma.2012.01.009
M3 - Article
AN - SCOPUS:84862827150
SN - 0016-7061
VL - 173-174
SP - 28
EP - 33
JO - Geoderma
JF - Geoderma
ER -