Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/su12229451 |
Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model | |
Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun | |
通讯作者 | Cai, HJ |
来源期刊 | SUSTAINABILITY
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EISSN | 2071-1050 |
出版年 | 2020 |
卷号 | 12期号:22 |
英文摘要 | Deficit irrigation strategy is essential for sustainable agricultural development in arid regions. A two-year deficit irrigation field experiment was conducted to study the water dynamics of winter wheat under deficit irrigation in Guanzhong Plain in Northwest China. Three irrigation levels were implemented during four growth stages of winter wheat: 100%, 80% and 60% of actual evapotranspiration (ET) measured by the lysimeter with sufficient irrigation treatment (CK). The agro-hydrological model soil-water-atmosphere-plant (SWAP) was used to simulate the components of the farmland water budget. Sensitivity analysis for parameters of SWAP indicated that the saturated water content and water content shape factor n were more sensitive than the other parameters. The verification results showed that the SWAP model accurately simulated soil water content (average relative error (MRE) < 21.66%, root mean square error (RMSE) < 0.07 cm(3) cm(-3)) and ET (R-2 = 0.975, p < 0.01). Irrigation had an important impact on actual plant transpiration, but the actual soil evaporation had little change among different treatments. The average deep percolation was 14.54 mm and positively correlated with the total irrigation amount. The model established using path analysis and regression methods for estimating ET performed well (R-2 = 0.727, p < 0.01). This study provided effective guidance for SWAP model parameter calibration and a convenient way to accurately estimate ET with fewer variables. |
英文关键词 | irrigation pattern crop model evapotranspiration sensitivity analysis path analysis |
类型 | Article |
语种 | 英语 |
开放获取类型 | gold |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000594581100001 |
WOS关键词 | YIELD COMPONENTS ; GUANZHONG PLAIN ; USE EFFICIENCY ; PATH-ANALYSIS ; ROOT-GROWTH ; SENSITIVITY-ANALYSIS ; SALINE WATER ; MAIZE ; UNCERTAINTY ; DYNAMICS |
WOS类目 | Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies |
WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology |
来源机构 | 西北农林科技大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/327784 |
作者单位 | [Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun] Northwest A&F Univ, Minist Educ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Yangling 712100, Shaanxi, Peoples R China; [Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun] Northwest A&F Univ, Inst Watersaving Agr Arid Areas China, Yangling 712100, Shaanxi, Peoples R China; [Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Xiaowen,Cai, Huanjie,Li, Liang,et al. Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model[J]. 西北农林科技大学,2020,12(22). |
APA | Wang, Xiaowen,Cai, Huanjie,Li, Liang,&Wang, Xiaoyun.(2020).Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model.SUSTAINABILITY,12(22). |
MLA | Wang, Xiaowen,et al."Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model".SUSTAINABILITY 12.22(2020). |
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