globalchange  > 全球变化的国际研究计划
DOI: 10.1016/j.agwat.2019.06.004
WOS记录号: WOS:000477784200019
论文题名:
Climate change is expected to increase yield and water use efficiency of wheat in the North China Plain
作者: Rashid, Muhammad Adil1,2,3; Jabloun, Mohamed4; Andersen, Mathias Neumann1,3; Zhang, Xiying2; Olesen, Jorgen Eivind1,3
通讯作者: Rashid, Muhammad Adil ; Zhang, Xiying
刊名: AGRICULTURAL WATER MANAGEMENT
ISSN: 0378-3774
EISSN: 1873-2283
出版年: 2019
卷: 222, 页码:193-203
语种: 英语
英文关键词: Aqua Crop ; Climate change ; Ensemble projections ; General circulation models ; Growth cycle ; Irrigation management
WOS关键词: AIR CO2 ENRICHMENT ; ELEVATED ATMOSPHERIC CO2 ; FAO CROP MODEL ; WINTER-WHEAT ; AQUACROP MODEL ; CHANGE IMPACTS ; GRAIN-YIELD ; TEMPERATURE VARIABILITY ; SPRING WHEAT ; PRODUCTIVITY
WOS学科分类: Agronomy ; Water Resources
WOS研究方向: Agriculture ; Water Resources
英文摘要:

Climate change impacts on winter wheat yield and water-use were assessed with the AquaCrop model for different representative concentration pathway (RCP) scenarios (RCP 2.6, RCP 4.5, RCP 6.0 and RCP 8.5) and time slices (2040s, 2060s, 2080s) using ensemble projections from 10 general circulation models (GCM) for a site in the North China Plain. To test the role of crop and soil management practices under climate change, simulations with deficit irrigation (DI) and mulching were also performed. DI was defined as a practice where soil water content was restored to field capacity after depleting 150% of readily available water (RAW). The chosen mulching practice had a fixed capacity to reduce evaporation by 60%. Simulated outputs were compared with the baseline simulations (baseline period: 1984-2015). The results indicate that yield and water use efficiency (WUE) of wheat will increase under all RCP scenarios and time slices. Analysis revealed that winter wheat in the NCP would benefit from both CO2 fertilization and warming. Warming will shorten the growing cycle but largely due to curbing of the overwintering period. Due to accelerated growth/development, flowering and maturity will be advanced compared to the baseline period. Warming will also ease the low-temperature stress on biomass production. The seasonal evapotranspiration will reduce mainly due to the shorter growing cycle and the CO2-induced reduction in transpiration. Increase in yield and WUE is expected even under DI, while mulching can further increase WUE. Projections using individual GCMs indicated that the variability in crop production would be higher for the high-end scenario (RCP 8.5) than for RCP 2.6. These findings imply that in general, wheat in the NCP is less vulnerable to climate change than in other parts of the world. In addition, the expected increase in the yield and WUE of wheat may positively affect current depletion rates of groundwater for irrigation; however, more work is needed to quantify this. In future, it will be possible to introduce short duration wheat and long duration maize (second crop in rotation) cultivars.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/144227
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Aarhus Univ, Dept Agroecol, Blichers Alle 20, DK-8830 Tjele, Denmark
2.Chinese Acad Sci, Inst Biol & Genet, Ctr Agr Resources Res, 286 Huaizhong Rd, Shijiazhuang 050021, Hebei, Peoples R China
3.Sino Danish Ctr Educ & Res, Niels Jensens Vej 2, DK-8000 Aarhus C, Denmark
4.Univ Nottingham, Sch Biosci, Loughborough LE12 5RD, Leics, England

Recommended Citation:
Rashid, Muhammad Adil,Jabloun, Mohamed,Andersen, Mathias Neumann,et al. Climate change is expected to increase yield and water use efficiency of wheat in the North China Plain[J]. AGRICULTURAL WATER MANAGEMENT,2019-01-01,222:193-203
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