Can China achieve food security through the development of irrigation?
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China faces the dual challenge of water scarcity and food security with continued population growth. This paper explores methods to meet that demand without increasing agricultural water usage. The results show that China’s grain yield increased from 1.09 to 5.38 t/ha in 1949–2014 and may reach 6.13 t/ha in 2030. Further, food production increases can be achieved by increasing crop yield and enhancing irrigation efficiency (the ratio of crop irrigation water consumption to water diversion, IE). According to forecast scenarios, future grain yield will reach 5.86 t/ha if the ratio of total irrigated areas increases by 12.3%, while the IE will reach 0.583, lower than the planning goal of 0.600. The increase of water productivity proves that China can ensure its food security by improving IE and expanding irrigation areas with the water that is saved. The basic premise to ensure food security is to ensure that future investments in agricultural water and arable land are not reduced. The future should focus on provinces in the South, which is the major grain-producing area, in developing irrigation. The Northern regions have limited potential to develop irrigation and should therefore maintain the current scale of agricultural production to lay a solid foundation for food security in the future.
KeywordsFood security Irrigation efficiency Crop yield Water productivity Water resource China
This work is jointly funded by National Natural Science Foundation of China (51609065), the Fundamental Research Funds for the Central Universities (2015B11014), China Postdoctoral Science Foundation funded project (2017M611681), A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the Science and Technology Project on Water Conservancy in Jiangsu Province (2017057).
- Cao X, Wu P, Wang Y, Zhao X (2015c) Challenge of water sources in urbanizing China: an analysis of agricultural water footprint. Pol J Environ Stud 24(1):9–18Google Scholar
- Falkenmark M, Lundquist J, Widstrand C (1989) Macro-scale water scarcity requires micro-scale approaches: aspects of vulnerability in semi-arid development. Nat Res Forum 13(4):258–267. https://doi.org/10.1111/j.1477-8947.1989.tb00348.x CrossRefGoogle Scholar
- MWR (Ministry of Water Resources) (1997–2014) China water resources bulletins in 1997–2014. China Water Press, Beijing. http://www.mwr.gov.cn/sj/tjgb/szygb/
- NBSC (National Bureau of Statistics of China) (2012–2016) China statistical yearbooks in 2012–2016. China Statistics Press, Beijing. http://www.stats.gov.cn/tjsj/ndsj/
- NDRC (National Development and Reform Commission) (2011) Essentials of the National Integrated Water Resources Planning. China Water Resour 23:33–35Google Scholar
- Piao S, Ciais P, Huang Y, Shen Z, Peng S, Li J, Zhou L, Liu H, Ma Y, Ding Y, Friedlingstein P, Liu C, Tan K, Yu Y, Zhang T, Fang J (2010) The impacts of climate change on water resources and agriculture in China. Nature 467(7311):43–51. https://doi.org/10.1007/978-3-540-79242-0_11 CrossRefGoogle Scholar
- Raskin P, Gleick P, Kirshen P, Pontius RG, Strzepek K (1997) Waer futures: assessment of long-range patterns and prospects. Stockholm Environment Institute, StockholmGoogle Scholar
- Rodrigues GC, Pereira LS (2009) Assessing economic impacts of deficit irrigation as related to water productivity and water costs. Biosyst Eng 103:536–551. https://doi.org/10.1016/j.biosystemseng.2009.05.002 CrossRefGoogle Scholar
- TSCC (The State Council of China) (2017) The national population development planning (2016–2030). http://www.gov.cn/zhengce/content/2017-01/25/content_5163309.htm