DOI: 10.1111/gcb.12803
论文题名: High vapor pressure deficit drives salt-stress-induced rice yield losses in India
作者: Tack J. ; Singh R.K. ; Nalley L.L. ; Viraktamath B.C. ; Krishnamurthy S.L. ; Lyman N. ; Jagadish K.S.V.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 4 起始页码: 1668
结束页码: 1678
语种: 英语
英文关键词: Climate change
; Coastal and deltaic regions
; High temperature
; Rice
; Salinity
; Vapor pressure deficit
Scopus关键词: climate change
; coastal zone
; crop production
; crop yield
; delta
; global warming
; paddy field
; regression analysis
; saline intrusion
; vapor pressure
; India
; sodium chloride
; agriculture
; climate change
; geography
; growth, development and aging
; heat
; India
; metabolism
; Oryza
; physiological stress
; regression analysis
; salinity
; season
; vapor pressure
; Agriculture
; Climate Change
; Geography
; Hot Temperature
; India
; Oryza
; Regression Analysis
; Salinity
; Seasons
; Sodium Chloride
; Stress, Physiological
; Vapor Pressure
英文摘要: Flooded rice is grown across wide geographic boundaries from as far north as Manchuria and as far south as Uruguay and New South Wales, primarily because of its adaptability across diverse agronomic and climatic conditions. Salt-stress damage, a common occurrence in delta and coastal rice production zones, could be heightened by the interactions between high temperature and relative humidity (vapor pressure deficit - VPD). Using temporal and spatial observations spanning 107 seasons and 19 rice-growing locations throughout India with varying electrical conductivity (EC), including coastal saline, inland saline, and alkaline soils, we quantified the proportion of VPD inducing salinity damage in rice. While controlling for time-invariant factors such as trial locations, rice cultivars, and soil types, our regression analysis indicates that EC has a nonlinear detrimental effect on paddy rice yield. Our estimates suggest these yield reductions become larger at higher VPD. A one standard deviation (SD) increase in EC from its mean value is associated with 1.68% and 4.13% yield reductions at median and maximum observed VPD levels, respectively. Yield reductions increase roughly sixfold when the one SD increase is taken from the 75th percentile of EC. In combination, high EC and VPD generate near catastrophic crop loss as predicted yield approaches zero. If higher VPD levels driven by global warming materialize in conjunction with rising sea levels or salinity incursion in groundwater, this interaction becomes an important and necessary predictor of expected yield losses and global food security. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61797
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Agricultural Economics, Mississippi State University, Starkville, MS, United States; International Rice Research Institute, DAPO BOX 7777, Metro Manila, Philippines; Department of Agricultural Economics and Agribusiness, University of Arkansas, Fayetteville, AR, United States; Directorate of Rice Research, Rajendranagar, Hyderabad, India; Central Soil Salinity Research Institute, Karnal, India
Recommended Citation:
Tack J.,Singh R.K.,Nalley L.L.,et al. High vapor pressure deficit drives salt-stress-induced rice yield losses in India[J]. Global Change Biology,2015-01-01,21(4)