粤北典型山区城市土地利用时空动态变化分析

Spatial and temporal dynamic changes of urban land use in typical mountainous areas of northern Guangdong Province

根据《土地调查条例》规定,国家根据国民经济和社会发展需要,每10年进行一次土地调查。迄今为止,共开展了3次全国国土调查工作。在国土调查基础上进而分析土地利用时空动态变化,对利用与科学管理国土资源具有重要意义。本文以粤北典型山区城市连州为研究区域,利用2009年、2019年两期Landsat遥感影像,通过土地利用动态度和空间自相关两大分析手段,剖析了粤北典型山区城市土地利用格局和土地覆盖变化速率和程度。研究结果表明:10年间,林地、耕地是研究区土地利用时空动态变化的主要类型;研究区土地利用强度较低且变化不明显,空间上具有一定的分异规律。

According to the Land Survey Regulations,the state conducts land surveys every 10 years according to the needs of national economy and social development.To date,three national land surveys have been carried out.On the basis of national land survey,it is of great significance to analyze the spatial and temporal dynamic changes of land use for the utilization and scientific management of national land resources.In this paper,Lianzhou City,a typical mountainous city in northern Guangdong Province,was taken as the research area.Landsat remote sensing images in 2009 and 2019 were used,and land use and cover change(LUCC)rate and degree of typical mountainous cities in northern Guangdong Province were analyzed by means of land use dynamic degree and spatial autocorrelation.The results show that over the past 10 years,forest land and cultivated land are the main types of temporal and spatial dynamic changes of land use in the study area;the intensity of land use in the study area is low,and the change is not obvious,and there is a certain spatial differentiation law.