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Comparison of the modeled potential yield versus the actual yield of maize in Northeast China and the implications for national food security
Li, Hongdan1; Shi, Wenjiao2,3,4; Wang, Bing1; An, Tingting1; Li, Shuang5; Li, Shuangyi1; Wang, Jingkuan1
2017-02-01
Source PublicationFOOD SECURITY
ISSN1876-4517
Volume9Issue:1Pages:99-114
Corresponding AuthorWang, Jingkuan(j-kwang@163.com)
AbstractA precise spatial knowledge of potential yield and actual yield is crucial to assessing an increase in grain yield and is relevant to national food security. In this paper, the potential maize yields at the county level in 2013 in Northeast China were estimated using a Miami model in combination with an integrated fertility index and the effect of chemical fertilizers on yield increase. Then, the spatial characteristics of the climate, farmland and grain production potential were presented, and the potential yield increase and food security implications were analyzed. The estimated production potentials of the climate, farmland and grain in 2013 were approximately 4.65 x 10(3)-13.06 x 10(3) kg/ha, 2.77 x 10(3)-9.38 x 10(3) kg/ha, and 2.97 x 10(3)-12.1 x 10(3) kg/ha, respectively, whereas the actual maize yield in 2013 was 1.50 x 10(3)-8.60 x 10(3) kg/ha, accounting for 41.86-95.84 % of the grain production potential. The total average potential maize increase in Northeast China was 3.32 x 10(3) kg/ha, measured from the difference between the climate production potential and the actual yield. Furthermore, the main regions with lower surplus production but a higher potential for increase were located in the eastern Liaoning, Jilin and Heilongjiang Provinces. In addition, the surplus production, which was 136.56 million tons, could feed 341.4 million people in other areas of China. In conclusion, we suggest that improving access to agronomic practices (such as fertilizer and high-yielding seed) and developing agricultural policies and strategies could increase the maize yield and further narrow the yield gap.
KeywordProduction potential Increase potential Food security Northeast China
DOI10.1007/s12571-016-0632-4
WOS KeywordLAND-USE CHANGE ; CLIMATE-CHANGE ; GRAIN PRODUCTION ; CROPPING SYSTEMS ; SPRING MAIZE ; GAPS ; PLAIN ; PRODUCTIVITY ; MANAGEMENT ; WHEAT
Indexed BySCI
Language英语
Funding ProjectSpecial Research Program for Agriculture of China[201303126] ; National Natural Science Foundation of China[41371002] ; Open Fund of State Key Laboratory of Remote Sensing Science[OFSLRSS201622]
Funding OrganizationSpecial Research Program for Agriculture of China ; National Natural Science Foundation of China ; Open Fund of State Key Laboratory of Remote Sensing Science
WOS Research AreaFood Science & Technology
WOS SubjectFood Science & Technology
WOS IDWOS:000395011900008
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/64690
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Jingkuan
Affiliation1.Shenyang Agr Univ, Coll Land & Environm, Natl Engn Lab Efficient Utilizat Soil & Fertilize, 120 Dongling Rd, Shenyang 110866, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
4.Beijing Normal Univ, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China
5.Shenyang Urban Planning Design & Res Inst, Shenyang 110866, Peoples R China
Recommended Citation
GB/T 7714
Li, Hongdan,Shi, Wenjiao,Wang, Bing,et al. Comparison of the modeled potential yield versus the actual yield of maize in Northeast China and the implications for national food security[J]. FOOD SECURITY,2017,9(1):99-114.
APA Li, Hongdan.,Shi, Wenjiao.,Wang, Bing.,An, Tingting.,Li, Shuang.,...&Wang, Jingkuan.(2017).Comparison of the modeled potential yield versus the actual yield of maize in Northeast China and the implications for national food security.FOOD SECURITY,9(1),99-114.
MLA Li, Hongdan,et al."Comparison of the modeled potential yield versus the actual yield of maize in Northeast China and the implications for national food security".FOOD SECURITY 9.1(2017):99-114.
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