globalchange  > 全球变化的国际研究计划
DOI: 10.1002/joc.5871
Scopus ID: 2-s2.0-85055752256
Effects of large-scale climate anomalies on crop reference evapotranspiration in the main grain-production area of China
Author: Liu B.; Huang Z.; Chen X.; Wang Z.
Source Publication: International Journal of Climatology
ISSN: 8998418
Publishing Year: 2019
Volume: 39, Issue:3
pages begin: 1195
pages end: 1212
Language: 英语
Keyword: changing trends ; crop reference evapotranspiration ; large-scale climatic anomalies ; main grain-producing area of China
Scopus Keyword: Climate change ; Crops ; Evapotranspiration ; Grain (agricultural product) ; Regression analysis ; Water management ; Wind ; Agricultural productions ; Atmospheric water vapour content ; Changing trends ; Climatic anomalies ; Energy and water balance ; Producing areas ; Reference evapotranspiration ; Waterresource management ; Atmospheric humidity
English Abstract: Crop reference evapotranspiration (ET 0 ), which connects the energy and water balance, is an important indicator used in water resource management and agricultural production. On the basis of daily meteorological data from 479 observation stations, we investigate changes in ET 0 and associated climate factors across the main grain-producing area (MGPA) of China from 1960 to 2015. The Mann–Kendall test and Sen's slope estimator were applied to detect trends in ET 0 , and regression analyses and composite analyses were used to evaluate the contributions of climatic variables and large-scale anomalies that may affect ET 0 . The results of this study show that ET 0 in the MGPA decreased (−2.67 mm/decade) during summer throughout the past 56 years, and that this change is largely attributable to decreased sunshine duration and wind speed (WS). Furthermore, decreased WSs in the 850-hpa geostrophic wind field, are responsible for decreases in ET 0 in Northeast China Region (−1.85 mm/decade), which affect ET 0 by significantly weakening the observed surface WS. Meanwhile, significant low cloud cover variations accounted for the decrease in ET 0 in the Huang-Huai-Hai Region (−7.85 mm/decade), Loess Plateau Region (−2.91 mm/decade), Yangtze River Region (−3.96 mm/decade), and Southwest China Region (−2.71 mm/decade). However, decreases in the integrated atmospheric water vapour content (IWVC), which act to weaken the surface relative humidity, are hypothesised to increase ET 0 in the South China Region (1.25 mm/decade). © 2018 Royal Meteorological Society
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被引频次[WOS]:1   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:全球变化的国际研究计划

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Affiliation: Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou, China; School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China

Recommended Citation:
Liu B.,Huang Z.,Chen X.,et al. Effects of large-scale climate anomalies on crop reference evapotranspiration in the main grain-production area of China[J]. International Journal of Climatology,2019-01-01,39(3)
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