基于ArcGIS的河南省卫辉市耕地时空动态变化分析

随着经济的快速发展,城镇扩张速度不断增加、城镇化率不断提高,结果必然会带来土地利用结构的变化,其中影响最为显著的是由此带来的耕地的时空动态变化。通过遥感技术和ArcGIS软件相结合,并选取部分景观格局指数研究分析了近年来卫辉市城镇发展变化和耕地空间格局的时空动态变化,结果显示:2011—2015年卫辉市城镇建设用地面积由10 678.68 hm^2增加到13 047.35 hm^2,城镇化率逐渐上升,而未利用地开发强度增大,耕地面积稳中有升;受卫辉市地形影响,耕地的空间位置分布不均,增加耕地的位置较为集中,使卫辉市近年来的耕地破碎度有所下降,对农业生产发展有一定的积极作用。

Spatiotemporal Dynamic Change Analysis of Cultivated Land in Weihui City of Henan Province Based on ArcGIS

With the rapid development of the economy,the continuous expansion of urban areas and the increasing rate of urbanization will inevitably lead to changes in the structure of land use,in which the most significant impact is the temporal and spatial dynamics of cultivated land.This paper combines remote sensing technology and ArcGIS software,and selects some landscape pattern indexes to analyze the spatial and temporal dynamics of urban development and cultivated land spatial pattern in Weihui City in recent years.The results show that the area of urban construction land in Weihui increased from 10678.68 hectares to 13047.35 hectares from 2011 to 2015.The urbanization rate has gradually increased,while the intensity of unused land development has increased,and the cultivated land area has increased steadily.Due to the terrain of Weihui City,the spatial position of cultivated land was unevenly distributed,and the location of increasing cultivated land was concentrated.In recent years,the degree of arable land fragmentation in Weihui City has declined,which has a certain positive effect on the development of agricultural production.