干旱区生态环境知识资源中心(Arid): Responses of crop growth and water productivity to climate change and agricultural water-saving in arid region

Arid

DOI	10.1016/j.scitotenv.2019.134621
	Responses of crop growth and water productivity to climate change and agricultural water-saving in arid region
	Liu, Minghuan 1,2; Xu, Xu 1,2; Jiang, Yao 1,2; Huang, Quanzhong 1,2; Huo, Zailin 2; Liu, Liu 2; Huang, Guanhua 1,2
通讯作者	Xu, Xu ; Huang, Guanhua
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	703
英文摘要	Climate change and associated elevated atmospheric CO2 concentration and rising temperature have become a great challenge to agricultural production especially in arid and semiarid regions, and a great concern to scientists worldwide. Thus, it is very important to assess the response of crop growth and water productivity to climate change projections, which in turn can help devise adaptive strategies to mitigate their impact. An agro-hydrological model with well consideration of CO2 effects on both the stomatal conductance and leaf area was established. The model was well calibrated and validated using the data collected from the middle oasis of Heihe River basin, northwest China, which was selected as a typical arid region. Simulations of soil water contents and crop growth matched well with observations. Then various scenarios were designed with considering three climate change alternatives (RCP 2.6, RCP 4.5 and RCP 8.5) and three agricultural water-saving alternatives in the context of irrigation water availability being constant. Responses of crop growth and water productivity were predicted for thirty years from 2018 to 2047. As compared to current situation, there would be a reduction of 3.4-8.6% in crop yield during the period of 2018-2027 and an increase of 1.5-18.7% in crop yield during the period of 2028-2047 for seed corn, and an increase of 7.4-26.7% in crop yield during the period of 2018-2047 for spring wheat, respectively. Moreover, results showed an increase in water productivity ranged from 14.3% to 44.5% for seed corn and from 34.7% to 52.0% for spring wheat, respectively. Furthermore, adaptive strategies to climate change were recommended for the seed corn and spring wheat, respectively. Our results are expected to provide implications for devising adaptive strategies to changing environments in other arid and irrigation-fed areas. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Elevated CO2 concentration Rising temperature Agricultural water-saving Arid region Water productivity
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000505924300151
WOS关键词	INORGANIC CARBON POOL ; ELEVATED CO2 ; DEFICIT IRRIGATION ; USE EFFICIENCY ; CHANGE IMPACT ; RIVER-BASIN ; WHEAT YIELD ; LEAF-AREA ; MODEL ; PHOTOSYNTHESIS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-02-10
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312841
作者单位	1.China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China; 2.China Agr Univ, Ctr Agr Water Res, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Liu, Minghuan,Xu, Xu,Jiang, Yao,et al. Responses of crop growth and water productivity to climate change and agricultural water-saving in arid region[J]. 中国农业大学,2020,703.
APA	Liu, Minghuan.,Xu, Xu.,Jiang, Yao.,Huang, Quanzhong.,Huo, Zailin.,...&Huang, Guanhua.(2020).Responses of crop growth and water productivity to climate change and agricultural water-saving in arid region.SCIENCE OF THE TOTAL ENVIRONMENT,703.
MLA	Liu, Minghuan,et al."Responses of crop growth and water productivity to climate change and agricultural water-saving in arid region".SCIENCE OF THE TOTAL ENVIRONMENT 703(2020).