Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agwat.2015.01.016 |
Water use by a groundwater dependent maize in a semi-arid region of Inner Mongolia: Evapotranspiration partitioning and capillary rise | |
Wu, Yao1; Liu, Tingxi1; Paredes, Paula2; Duan, Limin1; Pereira, Luis S.2 | |
通讯作者 | Liu, Tingxi |
来源期刊 | AGRICULTURAL WATER MANAGEMENT
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ISSN | 0378-3774 |
EISSN | 1873-2283 |
出版年 | 2015 |
卷号 | 152页码:222-232 |
英文摘要 | This study aimed at assessing the soil water balance, groundwater contribution, crop transpiration and soil evaporation of a rainfed maize crop in Horqin sandy area, north-eastern Inner Mongolia, China. Two years of field data from the Agula site were used, 2008 with relatively high rainfall (363 mm) and high water table, and 2009 with low rainfall (125 mm) and lower water table. The SIMDualKc water balance model was calibrated with observed soil water content data of 2008 and validated with data of 2009. The model uses the dual crop coefficient approach for evapotranspiration (ET) partitioning, and parametric functions for computing capillary rise. The respective modelling results show that the groundwater contribution represented ca. 50% of crop ET in both years. Estimation errors are small, with root mean square errors of 0.007 and 0.008 cm(3) cm(-3) respectively in 2008 and 2009. The Nash and Sutcliffe modelling efficiency were high, 0.93 in both years, which indicates a low variance of residuals. The calibrated basal crop coefficient K-cd mid = 0.95 denotes a low density of the crop because it is much lower than common potential values. Soil evaporation was relatively low, 23% of ET in the wet year and 17% in the dry year, because capillary rise does not contribute to soil evaporation but to roots extraction only. Results show that capillary rise plays a main role in supplying the vegetation throughout the season, hence a strong dependence of vegetation upon groundwater. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | SIMDualKc model Groundwater contribution Dual crop coefficients Crop transpiration Soil evaporation Groundwater dependent ecosystems |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Portugal |
收录类别 | SCI-E |
WOS记录号 | WOS:000351806800022 |
WOS关键词 | HORQIN SANDY LAND ; CROP COEFFICIENT APPROACH ; YELLOW-RIVER BASIN ; NORTH CHINA PLAIN ; SHALLOW GROUNDWATER ; SOIL ; IRRIGATION ; MODEL ; WHEAT ; EVAPORATION |
WOS类目 | Agronomy ; Water Resources |
WOS研究方向 | Agriculture ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/185595 |
作者单位 | 1.Inner Mongolia Agr Univ, Coll Water Conservancy & Civil Engn, Hohhot 010018, Peoples R China; 2.Univ Lisbon, Inst Agron, LEAF, P-1349017 Lisbon, Portugal |
推荐引用方式 GB/T 7714 | Wu, Yao,Liu, Tingxi,Paredes, Paula,et al. Water use by a groundwater dependent maize in a semi-arid region of Inner Mongolia: Evapotranspiration partitioning and capillary rise[J],2015,152:222-232. |
APA | Wu, Yao,Liu, Tingxi,Paredes, Paula,Duan, Limin,&Pereira, Luis S..(2015).Water use by a groundwater dependent maize in a semi-arid region of Inner Mongolia: Evapotranspiration partitioning and capillary rise.AGRICULTURAL WATER MANAGEMENT,152,222-232. |
MLA | Wu, Yao,et al."Water use by a groundwater dependent maize in a semi-arid region of Inner Mongolia: Evapotranspiration partitioning and capillary rise".AGRICULTURAL WATER MANAGEMENT 152(2015):222-232. |
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