IGSNRR OpenIR
Variation and determining factor of winter wheat water requirements under climate change
Jia, Kun1; Yang, Yanzhao2,3; Dong, Guanglong1; Zhang, Chao2,3; Lang, Tingting2,3
2021-08-01
Source PublicationAGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
Volume254Pages:9
Corresponding AuthorYang, Yanzhao(yangyz@igsnrr.ac.cn)
AbstractUnderstanding the variation characteristics and related determining factors of water requirements under climate change is crucial for crop production and agricultural water resource utilization. Therefore, in this study, the crop coefficient method and water balance model were employed to estimate the crop water requirement (CWR) and irrigation water requirement (IR) of winter wheat in the middle reaches of the Yarlung Zangbo River (YZR) and its two tributaries from 1981 to 2015. The impacts of different meteorological factors on the CWR and IR variations were explored using sensitivity and contribution analyses, and their determining factors were identified. The results showed that effective precipitation increased at a rate of 0.98 mm/year from 1981 to 2015. Meanwhile, the CWR and IR decreased significantly at -2.27 mm/year and -3.26 mm/year, respectively, with annual mean values of 620 mm and 499 mm, respectively. The CWR exhibited relatively high sensitivities to sunshine duration and wind speed, indicating that these factors were more likely to cause changes in the CWR, of which wind speed was the determining factor of the CWR variation because of its high sensitivity and substantial reduction. While increased temperature caused an increase in the CWR, its influence was relatively limited and was offset by the impact caused by other factors. Meanwhile, the determining factor of the IR variation was the CWR (contribution rate of 83.11%), and the contribution of effective precipitation was only 16.89%. Nevertheless, spatial differences existed in the CWR and IR variations and corresponding determining factors. As it is necessary to understand the impacts of climate change on water requirements for effective agricultural water resource utilization, the results of this study will provide valuable information for mitigating the impacts of climate change and improving agricultural water management in the YZR and its two tributaries.
KeywordClimate change Crop water requirement Irrigation water requirement Sensitivity analysis Winter wheat Yarlung Zangbo River
DOI10.1016/j.agwat.2021.106967
WOS KeywordPOTENTIAL EVAPOTRANSPIRATION ; TEMPORAL VARIABILITY ; TIBETAN PLATEAU ; YANGTZE-RIVER ; CHINA ; AGRICULTURE ; IMPACTS ; TRENDS ; MIDDLE ; SENSITIVITY
Indexed BySCI
Language英语
Funding ProjectSecond Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK1006] ; National Natural Science Foundation of China[41801173]
Funding OrganizationSecond Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China
WOS Research AreaAgriculture ; Water Resources
WOS SubjectAgronomy ; Water Resources
WOS IDWOS:000670046300006
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163820
Collection中国科学院地理科学与资源研究所
Corresponding AuthorYang, Yanzhao
Affiliation1.Shandong Jianzhu Univ, Sch Management Engn, Jinan 250101, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Jia, Kun,Yang, Yanzhao,Dong, Guanglong,et al. Variation and determining factor of winter wheat water requirements under climate change[J]. AGRICULTURAL WATER MANAGEMENT,2021,254:9.
APA Jia, Kun,Yang, Yanzhao,Dong, Guanglong,Zhang, Chao,&Lang, Tingting.(2021).Variation and determining factor of winter wheat water requirements under climate change.AGRICULTURAL WATER MANAGEMENT,254,9.
MLA Jia, Kun,et al."Variation and determining factor of winter wheat water requirements under climate change".AGRICULTURAL WATER MANAGEMENT 254(2021):9.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jia, Kun]'s Articles
[Yang, Yanzhao]'s Articles
[Dong, Guanglong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jia, Kun]'s Articles
[Yang, Yanzhao]'s Articles
[Dong, Guanglong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jia, Kun]'s Articles
[Yang, Yanzhao]'s Articles
[Dong, Guanglong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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