全球智库信息集成服务系统(G2TT): Future increases in irrigation water requirement challenge the water-food nexus in the northeast farming region of China.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1016/j.agwat.2018.10.045
	Future increases in irrigation water requirement challenge the water-food nexus in the northeast farming region of China.
	Xu H; Tian Z; He X; Wang J; Sun L; Fischer G; Fan D; Zhong H
发表日期	2019
出处	Agricultural Water Management 213: 594-604
出版年	2019
语种	英语
摘要	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.
主题	Water (WAT)
关键词	Irrigation water requirement Climate change Drought risk Maize production China
URL	http://pure.iiasa.ac.at/id/eprint/15585/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/131672
推荐引用方式 GB/T 7714	Xu H,Tian Z,He X,et al. Future increases in irrigation water requirement challenge the water-food nexus in the northeast farming region of China.. 2019.