云南省城市土地扩张与人口增长耦合态势的时空演变

Spatial and Temporal Evolution of Coupling Situation between Urban Lands Expansion and Population Growth in Yunnan Province

以云南省16个地州为研究解析尺度,运用总体耦合模型和空间耦合特征分析2009—2019年云南省城市土地扩张与人口增长耦合态势时空演变。结果表明:2009—2019年云南省城市土地扩张与人口增长速率均呈现显著的阶段性特征,大致可划分为高速波动增长和低速平缓增长2个阶段。与此同时土地扩张与人口增长速度均较高,人口增长和土地扩张速率呈协调统一的步调;云南省16个地州城市土地扩张与人口增长速率存在显著的空间差异;2009—2019年云南省城市土地重心整体移动方向为西南向东北,人口重心移动方向为由南向北,两者间距离逐步缩小,土地扩张与人口增长耦合性逐步增强;人地协调类型以土地显著扩张型为主,城市土地扩张与人口增长耦合协调性低,人地配置失调问题较为突出。

Taking 16 prefectures of Yunnan Province as the research scale,this research analyzed the spatiotemporal evolution of the coupling situation between its urban lands expansion and population growth in the province during 2009—2019 by using the overall coupling model and spatial coupling characteristics.The results show that,the urban lands expansion and population growth rate from 2009 to 2019 present significant stage characteristics,which can be roughly divided into high-speed fluctuation growth and population growth.There are two stages of slow and gentle growth.At the same time,the speed of lands expansion and population growth is high,and the speed of population growth and lands expansion presents a coordinated pace.There is a significant spatial difference between the speed of urban lands expansion and population growth in 16 prefectures of the province.During 2009—2019,the overall movement direction of its urban Land Gravity Center is from southwest to northeast,and the movement direction of population gravity center is from south to north.These results show that the coupling of lands expansion and population growth is gradually enhanced and the coordination type of human vs.land is mainly land significant expansion.The coupling coordination of urban lands expansion and population growth is low,and the imbalance of human vs.land allocation is more prominent.