Comparison of the modeled potential yield versus the actual yield of maize in Northeast China and the implications for national food security
文献类型：期刊论文
| 作者 | Li, Hongdan1; Shi, Wenjiao2,3,4 ; Wang, Bing1; An, Tingting1; Li, Shuang5; Li, Shuangyi1; Wang, Jingkuan1
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| 刊名 | FOOD SECURITY
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| 出版日期 | 2017-02-01 |
| 卷号 | 9期号:1页码:99-114 |
| 关键词 | Production potential Increase potential Food security Northeast China |
| ISSN号 | 1876-4517 |
| DOI | 10.1007/s12571-016-0632-4 |
| 通讯作者 | Wang, Jingkuan(j-kwang@163.com) |
| 英文摘要 | A 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. |
| WOS关键词 | LAND-USE CHANGE ; CLIMATE-CHANGE ; GRAIN PRODUCTION ; CROPPING SYSTEMS ; SPRING MAIZE ; GAPS ; PLAIN ; PRODUCTIVITY ; MANAGEMENT ; WHEAT |
| 资助项目 | Special 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] |
| WOS研究方向 | Food Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000395011900008 |
| 出版者 | SPRINGER |
| 资助机构 | Special Research Program for Agriculture of China ; National Natural Science Foundation of China ; Open Fund of State Key Laboratory of Remote Sensing Science |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/64689]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Jingkuan |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：地理科学与资源研究所
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