2001—2016年徐州市区土地利用类型时空演变

本文旨在定量分析徐州市区土地利用类型时空演变特征,为促进徐州市区绿色发展提供依据。以2001—2016年遥感图像为数据源,通过计算土地利用类型转移矩阵与动态度,对徐州市区土地利用类型时空演变进行分析。结果显示2001—2016年徐州市区耕地总体减少17.0663 km 2,减少面积占市区总面积的2.98%;建筑用地增加7.0104 km 2,占总面积的1.22%;水体减少26.6313 km 2,占总面积的4.65%;林地增加15.7531 km 2,占总面积的2.75%;草地增加9.5661 km 2,占总面积的1.67%;未利用地增加11.3680 km 2,占总面积的1.98%。由此可见近16年以来徐州市区土地利用类型变化显著,人类干扰不断增强,必须有针对性地管控人类活动强度。

Temporal and Spatial Evolution of Landscape Pattern from 2001 to 2016 in Xuzhou

This article aims to quantitatively analyze the spatial and temporal evolution characteristics of land use types in Xuzhou,and provides a basis for promoting the green development of Xuzhou City.Taking the remote sensing images from 2001 to 2016 as the data sources,the spatial-temporal evolution of land use types in Xuzhou city was analyzed by calculating the land use type transfer matrix and dynamic degree.The results shown that the total arable land in Xuzhou city decreased by 17.0663 square kilometers from 2001 to 2016,and the reduction area accounted for 2.98%of the total urban area.Construction land increased by 7.0104 square kilometers,accounting for 1.22%of the total area.The water body decreased by 26.6313 square kilometers,accounting for 4.65%of the total area,and the forest land increased by 15.7531 square kilometers,accounting for 2.75%of the total area.Grassland increased by 9.5661 square kilometers,accounting for 1.67%of the total area,and unused land increased by 11.3680 square kilometers,accounting for 1.98%of the total area.It presented that the land use types in Xuzhou city had changed significantly in the past 16 years,human interference has been increased,and the intensity of human activities should be controlled.