2000—2020年郑州市土地利用状态时空变化特征

Spatio-temporal Characteristics of Land Use in Zhengzhou City from 2000 to 2020

以GlobeLand 30数据集、郑州市社会经济数据为基础数据,利用ArcGIS 10.7和SPSS进行统计分析,采用土地利用转移矩阵、标准差椭圆、热点分析、主成分分析等方法分析郑州市2000—2020年土地利用类型的时空变化特征以及土地利用转化的驱动因素。结果表明:(1)2000—2020年,郑州市建设用地和耕地面积波动量最大,分别增加19.54%和减少18.67%;(2)郑州市土地利用变化以东北—西南为主轴发生倾斜,且土地利用呈现向更大区域扩张的趋势;(3)郑州市土地利用空间变化热点区域集中在郑州市的中心区域,冷点区域集中在西部和东部;(4)人口因素和经济因素是郑州市土地利用转化的主要驱动因素。

Based on the GlobeLand 30 dataset and the social and economic data of Zhengzhou City,the ArcGIS 10.7 spatial analysis technique and SPSS statistical technology were used to analyze the data.Land use transfer matrix,standard deviation ellipse,hot spot analysis,principal component analysis and other methods were used to deeply analyze the spatio-temporal change characteristics of land use types in Zhengzhou from 2000 to 2020,dig out their change rules,and analyze the driving factors of land use transformation.The results show that:(1)From 2000 to 2020,the fluctuation of construction land and cultivated land area is the largest,increasing by 19.54% and decreasing by 18.67%,respectively;(2) The main axis of land use change in Zhengzhou City is tilted from northeast to southwest,and the land use showed a trend of expansion to a larger area.(3)The hot spots of land use spatial change are concentrated in the central area of Zhengzhou City,while the cold spots are concentrated in the west and east of Zhengzhou City.(4) Population and economic factors are the main driving factors of land use transformation in Zhengzhou City.