Spatial Heterogeneity of Winter Wheat Yield and Its Determinants in the Yellow River Delta, China
文献类型：期刊论文
| 作者 | Chu, Lin2; Huang, Chong1 ; Liu, Qingsheng1; Cai, Chongfa2; Liu, Gaohuan1
|
| 刊名 | SUSTAINABILITY
 |
| 出版日期 | 2020 |
| 卷号 | 12期号:1页码:21 |
| 关键词 | crop yields spatial disparity geographical detector influencing factors |
| DOI | 10.3390/su12010135 |
| 通讯作者 | Liu, Gaohuan(liugh@lreis.ac.cn) |
| 英文摘要 | Understanding spatial differences of crop yields and quantitatively exploring the relationship between crop yields and influencing factors are of great significance in increasing regional crop yields, promoting sustainable development of regional agriculture and ensuring regional food security. This study investigates spatial heterogeneity of winter wheat yield and its determinants in the Yellow River Delta (YRD) region. The spatial pattern of winter wheat in 2015 was mapped through time series similarity analysis. Winter wheat yield was estimated by integrating phenological information into yield model, and cross-validation was performed using actual yield data. The geographical detector method was used to analyze determinants influencing winter wheat yield. This study concluded that the overall classification accuracy for winter wheat is 88.09%. The estimated yield agreed with actual yield, with R-2 value of 0.74 and root mean square error (RMSE) of 1.02 t ha(-1). Cumulative temperature, soil salinity and their interactions were key determinants affecting winter wheat yield. Several measures are recommended to ensure sustainable crop production in the YRD region, including improving irrigation and drainage systems to reduce soil salinity, selecting salt-tolerant winter wheat varieties, and improving agronomy techniques to extend effective cumulative temperature. |
| WOS关键词 | MODIS TIME-SERIES ; VEGETATION INDEX ; ACREAGE ESTIMATION ; SOIL-SALINITY ; CROP AREA ; CLASSIFICATION ; NDVI ; VARIABILITY ; LANDSAT ; MODEL |
| 资助项目 | National Natural Science Foundation of China[41471335] ; National Key R&D Program of China[2017YFD0300403] |
| WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000521955600135 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/133588]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Gaohuan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Huazhong Agr Univ, Dept Resource & Environm Informat, Coll Resources & Environm, Wuhan 430070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu, Lin,Huang, Chong,Liu, Qingsheng,et al. Spatial Heterogeneity of Winter Wheat Yield and Its Determinants in the Yellow River Delta, China[J]. SUSTAINABILITY,2020,12(1):21. |
| APA | Chu, Lin,Huang, Chong,Liu, Qingsheng,Cai, Chongfa,&Liu, Gaohuan.(2020).Spatial Heterogeneity of Winter Wheat Yield and Its Determinants in the Yellow River Delta, China.SUSTAINABILITY,12(1),21. |
| MLA | Chu, Lin,et al."Spatial Heterogeneity of Winter Wheat Yield and Its Determinants in the Yellow River Delta, China".SUSTAINABILITY 12.1(2020):21. |
入库方式： OAI收割
来源：地理科学与资源研究所
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