Spatial Heterogeneity of Winter Wheat Yield and Its Determinants in the Yellow River Delta, China

doi:10.3390/su12010135

	Spatial Heterogeneity of Winter Wheat Yield and Its Determinants in the Yellow River Delta, China
	Chu, Lin 1; Huang, Chong 2; Liu, Qingsheng 2; Cai, Chongfa 1; Liu, Gaohuan 2
刊名	SUSTAINABILITY
	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.
资助项目	National Natural Science Foundation of China[41471335] ; National Key R&D Program of China[2017YFD0300403]
WOS关键词	MODIS TIME-SERIES ; VEGETATION INDEX ; ACREAGE ESTIMATION ; SOIL-SALINITY ; CROP AREA ; CLASSIFICATION ; NDVI ; VARIABILITY ; LANDSAT ; MODEL
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种	英语
出版者	MDPI
WOS记录号	WOS:000521955600135
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China
内容类型	期刊论文
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.Huazhong Agr Univ, Dept Resource & Environm Informat, Coll Resources & Environm, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, 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.