衡阳市市本级违法用地行为时空分布特征分析  

Spatio-temporal Characteristics Analysis of Illegal Land Use in the Intra-urban Area of Hengyang

作　　者：史与正[1] 张彤蕴[1] 胡晨霞 SHI Yuzheng;ZHANG Tongyun;HU Chenxia(Hu′nan Geologic Surveying and Mapping Institute,Hengyang 421001,China)

机构地区：[1]湖南省地质测绘院,湖南衡阳421001

出　　处：《测绘与空间地理信息》2020年第10期94-99,共6页Geomatics & Spatial Information Technology

摘　　要：以衡阳市市本级为例,选取2018年违法用地数据库,运用时序统计分析、缓冲区分析、空间自相关分析方法研究违法用地行为的时空分布特征。结果表明:1)研究区违法用地面积与宗数大致呈现正相关关系,且均表现出春夏低、秋冬高的特征;2)研究区中心处违法用地图斑少于研究区边界处,且违法用地图斑在研究区东南部出现的频率较高,在东北部出现的频率较低;3)研究区违法用地面积在研究区重心6000 m范围内较小,在6000-14000 m缓冲区区间内较大;且整体上呈现出距水系、铁路和公路越远违法用地面积越小的趋势;4)研究区违法用地行为在1月、5-7月和10月时不存在空间自相关性,在其他时间存在显著的正空间自相关性;热点(违法用地面积占比高值聚集点)多出现在研究区中横线附近,并向西北和东南方向扩展。The purposes is to study the spatio-temporal characteristics of illegal land use in the intra-urban area of Hengyang.The methods of time series statistical analysis,buffer analysis,and spatial autocorrelation analysis are used.The results showed that the area of the illegal land use was roughly positively correlated with the number,and both of them showed the characteristics of low in spring and summer,but high in autumn and winter.The illegal land use spots which appeared at the center of the study area were less than at the boundary,and the frequence of the illegal land use spots which appeared at the southeast was higher than at the northeast.The area of illegal land use in the 6000 m center of the study area was small,but in the buffer zone of 6000-14000 m was large.With the distance from the water,railway and highway were larger,the area of illegal land use were smaller.There was no spatial autocorrelation of illegal land use behavior in January,May-July and October,but has significant positive spatial autocorrelation in other time.Hotspots(high proportion of illegal land use)appeared mostly near the midline of the study area and extends to the northwest and southeast.

关 键 词：违法用地 时空特征 缓冲区分析 空间自相关 

分 类 号：P236[天文地球—摄影测量与遥感]