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DOI | 10.1007/s11027-018-9818-8 |
Scarce water resources and priority irrigation schemes from agronomic crops | |
Cao, X. C.1,2,3; Shu, R.2,3; Guo, X. P.2,3; Wang, W. G.1 | |
发表日期 | 2019 |
ISSN | 1381-2386 |
EISSN | 1573-1596 |
卷号 | 24期号:3页码:399-417 |
英文摘要 | Global environmental change places unavoidable pressure on water resources and agronomic crop production systems. Irrigation development is a credible measure to alleviate the challenge of food safety under water shortages, but it needs sufficient basis. The aim of this study is to address the problem of balancing water scarcity with food requirements, which are the key components of water security in regions with population growth. Marginal water productivity (MWP) indices for irrigation water performance and productivity evaluation were established in the current study. Based on the analysis of the regional water-crop relationship and spatial differences of MWP in China, the priorities for developing irrigation areas in different types of regions are discussed in this study. The results show that high MWPs are mainly in semi-arid regions with precipitation (P) between 500 and 1000mm, while low MWPs mostly occur in areas with P more than 1000 and less than 500mm. The significance and spatial distribution patterns of MWP are different than those of conventional irrigation water use efficiency evaluation indices, so its role cannot be replaced for the real production capacity of irrigation water evaluation. The strategies for global environmental change adaptation suggested in this study are taking MWP for irrigation water productivity evaluation and the priority irrigation schemes for agronomic crop determination; increasing MWP by means of irrigation efficiency and crop variety improvement worldwide; and raising global food production through the expansion of irrigation area in the regions hold high MWP and abundant water resources. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/94653 |
作者单位 | 1.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China; 2.Hohai Univ, Minist Educ, Key Lab Efficient Irrigat Drainage & Agr Soil Wat, Nanjing 210098, Jiangsu, Peoples R China; 3.Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Cao, X. C.,Shu, R.,Guo, X. P.,et al. Scarce water resources and priority irrigation schemes from agronomic crops[J],2019,24(3):399-417. |
APA | Cao, X. C.,Shu, R.,Guo, X. P.,&Wang, W. G..(2019).Scarce water resources and priority irrigation schemes from agronomic crops.MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE,24(3),399-417. |
MLA | Cao, X. C.,et al."Scarce water resources and priority irrigation schemes from agronomic crops".MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE 24.3(2019):399-417. |
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