近60a全球经济-人口-粮食重心的演变特征及耦合关系  

Evolutionary characteristics and coupling of the global economic-population-grain center of gravity in the last 60 years

作　　者：孙芮 仲俊涛 SUN Rui;ZHONG Juntao(College of Geographical Sciences,Qinghai Normal University,Xining 810008,China;College of Surveying and Mapping Science and Technology,Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]青海师范大学地理科学学院,西宁810008 [2]西安科技大学测绘科学与技术学院,西安710054

出　　处：《世界地理研究》2024年第9期31-44,共14页World Regional Studies

基　　金：国家自然科学基金项目(42001263);青海省自然科学基金项目(2022-ZJ-906)。

摘　　要：基于重心及耦合分析模型,分析1960-2020年全球经济、人口和粮食重心的空间格局与演变特征,并剖析其耦合关系及影响因素。结果显示(:1)3组重心均明显偏向北半球,这与全球海陆分布紧密相关,北半球相较于南半球陆地面积大、自然条件相对优越。经济重心位于几何中心(0°,0°)的西北方向,粮食重心和人口重心位于几何中心的东北方向(;2)经济重心快速东移且幅度大;人口重心主要表现为自北向南移动,1990年前由西北向东南方向移动,1990年后由东北向西南方向移动,移动幅度较小;粮食重心的跳动幅度较大且最不稳定,规律性不明显(;3)经济重心和粮食重心具有高度耦合性;粮食重心和人口重心具有耦合性,但不显著;经济重心和人口重心耦合性低,但处于逐渐增强状态。Based on the center of gravity and coupling analysis model,we calculate the spatial pattern and evolution characteristics of global economic,population and grain centers of gravity from 1960 to 2020,and analyze their coupling relationships and influencing factors.The results show that:(l)The centers of gravity of all three groups are obviously biased toward the northern hemisphere,which is closely related to the global distribution of land and sea,and the northern hemisphere has a larger land area and superior natural conditions than the southern hemisphere.The economic center of gravity is located in the northwest of the geometric center(0°,0°),and the grain and population centers of gravity are located in the northeast of the geometric center;(2)The economic center of gravity moves eastward rapidly and with a large magnitude;the popu-lation center of gravity mainly moves from northwest to south,from northwest to southeast be-fore 1990,and from northeast to the southwest after 1990,with a smaller movement;the grain center of gravity has a large jump and is the most unstable,and the regularity is not obvious;(3)The economic and grain centers of gravity are highly coupled;the grain and population centers of gravity are coupled,but not significantly;the economic and population centers of gravity are lowly coupled but in a gradually increasing state.

关 键 词：演变特征 耦合关系 经济重心 粮食重心 人口重心 

分 类 号：F316.11[经济管理—产业经济] F113[社会学—人口学] C922