Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agwat.2015.04.016 |
Assessment of a newly implemented irrigated area (Lerma Basin, Spain) over a 10-year period. I: Water balances and irrigation performance | |
Merchan, D.1; Causape, J.1; Abrahao, R.2; Garcia-Garizabal, I.3 | |
通讯作者 | Merchan, D. |
来源期刊 | AGRICULTURAL WATER MANAGEMENT
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ISSN | 0378-3774 |
EISSN | 1873-2283 |
出版年 | 2015 |
卷号 | 158页码:277-287 |
英文摘要 | Implementation of irrigated agriculture is common in semi-arid areas around the world. An assessment of irrigation performance is presented herein for a hydrological basin with an area of 7.38 km(2), representative of pressurized irrigated areas within the Ebro Basin (Spain). The study covers ten hydrological years, comprehending periods before (2004-2005), during (2006-2008) and after (2009-2013) transformation to irrigated land. Water balances were carried out for each of the 55 agricultural plots and for the totality of irrigable area. Once the water balance for the basin is validated, indicators of irrigation performance were obtained from the soil water balances for the vegetative cycle of the crops in each plot. Water balances presented good results, with balance errors below 10.0% for most of the studied years and an error of 1.2% across the entire study period. After implementation of irrigation, irrigation became the main water input to the basin (approximately 60%) whereas actual evapotranspiration accounted for the major output (approximately 70%). Irrigation efficiency reached 76.1%, while the losses of efficiency were due to evaporation and wind drift of sprinkler irrigation (13.5%) and drainage fraction (10.4%). A water deficit of 17.8% was estimated. The irrigation efficiency increased (1.05%year(-1)), while the irrigation drainage fraction decreased (0.95%year(-1)). However, improvements in irrigation performance were not guaranteed as water deficits also increased (0.95%year(-1)). Optimal water use could be achieved through.adequate design of irrigation schedules, i.e., irrigation rates adjusted to the requirements of crops and minimization of evaporation and wind drift losses. (C) 2015 Published by Elsevier B.V. |
英文关键词 | Irrigation efficiency Irrigation drainage fraction Evaporation and wind drift losses Water deficit |
类型 | Article |
语种 | 英语 |
国家 | Spain ; Brazil ; Ecuador |
收录类别 | SCI-E |
WOS记录号 | WOS:000358555400029 |
WOS关键词 | DISTRICT ; QUALITY |
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/2XILL650/185608 |
作者单位 | 1.Geol Survey Spain IGME, Zaragoza 50006, Spain; 2.Fed Univ Paraiba UFPB, BR-58051970 Joao Pessoa, Paraiba, Brazil; 3.Escuela Super Politecn Litoral ESPOL, FICT, Guayaquil, Ecuador |
推荐引用方式 GB/T 7714 | Merchan, D.,Causape, J.,Abrahao, R.,et al. Assessment of a newly implemented irrigated area (Lerma Basin, Spain) over a 10-year period. I: Water balances and irrigation performance[J],2015,158:277-287. |
APA | Merchan, D.,Causape, J.,Abrahao, R.,&Garcia-Garizabal, I..(2015).Assessment of a newly implemented irrigated area (Lerma Basin, Spain) over a 10-year period. I: Water balances and irrigation performance.AGRICULTURAL WATER MANAGEMENT,158,277-287. |
MLA | Merchan, D.,et al."Assessment of a newly implemented irrigated area (Lerma Basin, Spain) over a 10-year period. I: Water balances and irrigation performance".AGRICULTURAL WATER MANAGEMENT 158(2015):277-287. |
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