基于GIS的唐山市核心城区土地利用演变分析

An Analysis of Land Use Evolution in the Core Urban Area of Tangshan City Based on GIS

研究2009-2020年的唐山核心城区土地利用演变。结果表明,2009年耕地主要集中在西北、西南部及南湖周边地区,至2020年耕地规模虽有缩减,但分布位置大体没有改变;2009年建筑用地占据主体,其主要分布在东北、东南和中部,至2020年建筑用地仍是主体,其分布位置由中心向西北方向扩展;从2009至2020年林草地、水体和城市公共绿地呈增加趋势,工矿用地和未利用地呈下降趋势,表明区域生态环境向好发展,土地有效利用有所提升。

The land use evolution in the core urban area of Tangshan from 2009 to 2020 is studied.It has been shown that in 2009,arable land was mainly concentrated in the northwest,southwest,and the surrounding areas of Nanhu Lake.Although the scale of arable land decreased by 2020,the distribution remained roughly unchanged.In 2009,construction land accounted for the highest proportion,which was mainly distributed in the northeast,southeast,and central regions.By 2020,this proportion remained,with its distribution expanding from the center to the northwest.From 2009 to 2020,there was an increasing trend in forests,grasslands,water bodies,and urban public green spaces,while industrial and mining land and unused land showed a downward trend,indicating that the regional ecological environment was well developed and the efficiency of land use was improved.