Spatiotemporal changes in the state of food security across mainland china during 1990-2015: A multi-scale analysis

doi:10.1002/fes3.318

	Spatiotemporal changes in the state of food security across mainland china during 1990-2015: A multi-scale analysis
	Qiao, Jianmin 1; Cao, Qian 2; Zhang, Zhengtao 3; Cao, Zhi 4; Liu, Haimeng 4
刊名	FOOD AND ENERGY SECURITY
	2021-07-27
页码	15
关键词	agricultural policies crop modeling food production multiple scales purchasing power security levels
ISSN号	2048-3694
DOI	10.1002/fes3.318
通讯作者	Cao, Qian(caoqian@cug.edu.cn)
英文摘要	Food security is closely related to individual livelihood and social stability, and assessing the state of food security is essential for making agricultural policies. Nonetheless multi-scale assessment of national food security state with explicit consideration of availability and access remains to be resolved. In this study, a spatially explicit crop model was used to simulate the production of major crops in China (i.e., wheat, maize, rice, and soybeans). Food production (as simulated by the crop model) and GDP per capita relative to the global average were then used to develop food security indicators to evaluate China's food security levels on grid, provincial, and economic zone scales. The Getis-Ord method was further applied to analyze the spatial aggregation of food security and food insecurity provinces. Results show that food security situation improved in mainland China during 1990-2015, attributed largely to the enhanced purchasing power. On the grid scale, changes in food security state went through two stages: Before 2000, the regions in the eastern part of the Hu Line were food security, while the regions in the western part were food insecurity; after 2000, the state of food security greatly improved from insecurity to security in Northwest China, and the areas of the highest security level considerably increased in eastern China. On the provincial scale, food security state in most provinces improved or almost unchanged over time. Exception was found in coastal provinces, with food security state was greatly affected by urbanization. Food security hot spots were primarily detected in central China, while cold spots were detected in Xinjiang, Qinghai, and Tibet. On the economic zone scale, food security areas in the eastern part decreased during 1990-2010 but increased thereafter, while food security areas in the other three economic zones increased from 1990 to 2015. To ensure food security, China should maintain the arable land areas, improve the quality of farmlands, mobilize farming enthusiasm, and advance agricultural marketization.
资助项目	China Postdoctoral Science Foundation[2018M642691] ; Natural Science Foundation of Shandong Province[ZR2020QD011]
WOS关键词	EXPLICIT ASSESSMENT ; YIELD ; CHALLENGE ; SENSITIVITY ; AFRICA ; DEMAND ; INDIA
WOS研究方向	Agriculture ; Food Science & Technology
语种	英语
出版者	WILEY
WOS记录号	WOS:000679024900001
资助机构	China Postdoctoral Science Foundation ; Natural Science Foundation of Shandong Province
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164805]
专题	中国科学院地理科学与资源研究所
通讯作者	Cao, Qian
作者单位	1.Shandong Normal Univ, Sch Geog & Environm, Jinan, Peoples R China 2.China Univ Geosci, Sch Geog & Informat Engn, 388 Lumo Rd, Wuhan 430074, Peoples R China 3.Beijing Normal Univ, Acad Disaster Reduct & Emergency Management, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Qiao, Jianmin,Cao, Qian,Zhang, Zhengtao,et al. Spatiotemporal changes in the state of food security across mainland china during 1990-2015: A multi-scale analysis[J]. FOOD AND ENERGY SECURITY,2021:15.
APA	Qiao, Jianmin,Cao, Qian,Zhang, Zhengtao,Cao, Zhi,&Liu, Haimeng.(2021).Spatiotemporal changes in the state of food security across mainland china during 1990-2015: A multi-scale analysis.FOOD AND ENERGY SECURITY,15.
MLA	Qiao, Jianmin,et al."Spatiotemporal changes in the state of food security across mainland china during 1990-2015: A multi-scale analysis".FOOD AND ENERGY SECURITY (2021):15.