Future increases in irrigation water requirement challenge the water-food nexus in the northeast farming region of China

Xu, Hanqing1; Tian, Zhan2; He, Xiaogang3; Wang, Jun1; Sun, Laixiang4,5; Fischer, Guenther4; Fan, Dongli6; Zhong, Honglin5; Wu, Wei7; Pope, Edward8; Kent, Chris8; Liu, Junguo2

2019-03

10.1016/j.agwat.2018.10.045

AGRICULTURAL WATER MANAGEMENT   影响因子和分区

0378-3774

1873-2283

Northeast Farming Region of China (NFR) produces about one-third of the national maize output. Shortage of crop irrigation water is one of the main threat to the stable level of maize production in the NFR. Previous studies on the sensitivity of maize production to drought are typically based on field experiments and treat the maize growing season as a whole, with rare attention to the varying impacts of drought across different maize growth stages. Given the importance of NFR on China's food security, it is crucial to optimize the irrigation schedule to mitigate the adverse effects of drought. In this study, we employ Agro-ecological Zone (AEZ) model to investigate how climate change affects irrigation water requirement (IWR) of maize during different growth stages and under different climate change scenarios. Results indicate that the NFR would experience a substantial increase in the probability of extremely shortage of crop irrigation water under future climate change. The ensemble simulation under future climate projections indicates more frequent demands for irrigation with substantially increased amount in the mid-season stage (G3) when maize is more sensitive to water deficit compared with other stages. These findings indicate that earlier planning of irrigation infrastructure and development of more efficient irrigation scheme and technologies is of great importance to secure maize production in the region.

Irrigation water requirement Climate change Drought risk Maize production China

SCI ; EI

英语

其他

Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060402]

Agriculture ; Water Resources

Agronomy ; Water Resources

WOS:000457952700055

ELSEVIER SCIENCE BV

20184706106572

Climate models ; Crops ; Drought ; Food supply ; Irrigation ; Water ; Water resources

Meteorology:443 ; Atmospheric Properties:443.1 ; Water Resources:444 ; Agricultural Methods:821.3 ; Agricultural Products:821.4 ; Food Products:822.3 ; Mathematics:921

AGRICULTURAL SCIENCES

Web of Science

1.East China Normal Univ, Key Lab Geog Informat Sci, Minist Educ, Shanghai 200241, Peoples R China
2.South Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
3.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA
4.IIASA, A-2361 Laxenburg, Austria
5.Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA
6.Shanghai Inst Technol, Shanghai 201418, Peoples R China
7.Shanghai Meteorol Bur, Shanghai Climate Ctr, Shanghai 200030, Peoples R China
8.Met Off, Hadley Ctr, Exeter, Devon, England

Xu, Hanqing,Tian, Zhan,He, Xiaogang,et al. Future increases in irrigation water requirement challenge the water-food nexus in the northeast farming region of China[J]. AGRICULTURAL WATER MANAGEMENT,2019,213:594-604.

Xu, Hanqing.,Tian, Zhan.,He, Xiaogang.,Wang, Jun.,Sun, Laixiang.,...&Liu, Junguo.(2019).Future increases in irrigation water requirement challenge the water-food nexus in the northeast farming region of China.AGRICULTURAL WATER MANAGEMENT,213,594-604.

Xu, Hanqing,et al."Future increases in irrigation water requirement challenge the water-food nexus in the northeast farming region of China".AGRICULTURAL WATER MANAGEMENT 213(2019):594-604.