globalchange  > 气候变化事实与影响
DOI: 10.1016/j.scitotenv.2018.12.023
WOS记录号: WOS:000457293700124
论文题名:
Water resources and nitrate discharges in relation to agricultural land uses in an intensively irrigated watershed
作者: Sorando, R.1,2; Comin, F. A.1; Jimenez, J. J.3; Sanchez-Perez, J. M.4; Sauvage, S.4
通讯作者: Sorando, R.
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
ISSN: 0048-9697
EISSN: 1879-1026
出版年: 2019
卷: 659, 页码:1293-1306
语种: 英语
英文关键词: Water resources ; Nitrate ; SWAT model ; Calibration ; Validation ; Sensitivity analysis
WOS关键词: SWAT MODEL ; ASSESSMENT-TOOL ; RIVER-BASIN ; NO3-N LOADS ; QUALITY ; SEDIMENT ; SOIL ; VARIABILITY ; ACCURACY ; RUNOFF
WOS学科分类: Environmental Sciences
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

Application of integrated hydrological models to manage water resources and non-point agricultural pollutants are increasingly used in decision-making processes. In this study SWAT (Soil andWater Assessment Tool) was used to simulate the water balance and nitrate pollution in an intensively irrigated agricultural catchment (Flumen River in Monegros, Aragon, NE Spain). Rainfall comprised only 45% of the inputs of water in the Flumen watershed and the rest is contributed through irrigation canals from two other rivers outside the Flumen watershed. Green water storage and green water flow are the dominant components of the water balance in the watershed, which is related to the important contribution of water for irrigation. In general, green water storage and green water flow are quite similar in the subwatersheds dominated by irrigation agriculture that are located in the central part of the watershed. A similar pattern was observed for blue water, with high amounts in the central irrigated subwatersheds compared to the non-irrigated subwatersheds. Consequently, nitrate infiltration in the aquifer was higher in the inner irrigated subwatersheds (100-250 kg N ha(-1) year(-1)) but much lower than the lateral flow rates estimated in the non-irrigated subwatersheds (1400-2000 kg N ha(-1) year(-1)). Two scenarios simulating the effects of expected climate change factors in this zone were performed. A reduction in the availability of water for irrigation will transform the area from irrigated crops to cereal. In this case the water flow of River Flumen at the outlet of the watershed is reduced by 15%. If a reduction of 40% nitrate fertilization is applied, the nitrate exported to Flumen River would decreased by 28%. These results suggest that dosing irrigation water and fertilizers in accordance with crop requirements would contribute to buffer peaks of water and nitrate discharges and to a more efficient agricultural use of the resources. (C) 2018 Elsevier B.V. All rights reserved.


Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/133777
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: 1.CSIC, Inst Pirenaico Ecol, Av Montanana 1005, Zaragoza 50192, Spain
2.AISECO, C Enrique Val 41,3, Zaragoza 50011, Spain
3.CSIC, Inst Pirenaico Ecol, Av Ntra Sra Victoria 16, Jaca 22700, Huesca, Spain
4.CNRS, UPS, INPT, ENSAT,ECOLAB,UMR 5245, Av Agrobiopole,BP32607 Auzeville Tolosane, F-31326 Castanet Tolosan, France

Recommended Citation:
Sorando, R.,Comin, F. A.,Jimenez, J. J.,et al. Water resources and nitrate discharges in relation to agricultural land uses in an intensively irrigated watershed[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019-01-01,659:1293-1306
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Sorando, R.]'s Articles
[Comin, F. A.]'s Articles
[Jimenez, J. J.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Sorando, R.]'s Articles
[Comin, F. A.]'s Articles
[Jimenez, J. J.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Sorando, R.]‘s Articles
[Comin, F. A.]‘s Articles
[Jimenez, J. J.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.