基于3S技术的包头市达茂旗土地利用类型及植被覆盖变化研究  

Study on Land Use Type and Vegetation Cover Change in Damao Banner,Baotou City Based on 3S technology

作　　者：张心贝 杨光 尚佳佳 郑路 ZHANG Xinbei;YANG Guang;SHANG Jiajia;ZHENG Lu(Desert Governance School,Inner Mongolia Agricultural University,Hohhot 010018,China)

机构地区：[1]内蒙古农业大学沙漠治理学院,呼和浩特010018

出　　处：《内蒙古林业科技》2025年第1期22-30,共9页Journal of Inner Mongolia Forestry Science and Technology

基　　金：基于3S技术的阴山北麓草原水土流失过程及驱动机制研究(YSS202305);开放研究基金项目。

摘　　要：基于遥感(Remote sensing,RS)、地理信息系统(Geographic information system,GIS)与全球定位系统(Global positioning system,GPS)技术,以1995-2024年陆地卫星(Landsat)影像为基础,结合土地利用转移矩阵,分析7期达尔罕茂明安联合旗(下文简称达茂旗)土地利用时空演变特征;通过高光谱遥感影像,探究归一化植被指数(Normalized differential vegetation index,NDVI)的时空演变规律,并定量评估土地利用与土地覆盖变化(Land use and cover change,LUCC)对植被指数的影响,再运用莫兰指数(Moran’s I)对NDVI的空间集聚状况进行分析,结果表明:达茂旗土地利用类型以草地为主,其次为未利用地和耕地。建设用地面积增加9809hm^(2),主要由草地和耕地转化而来;未利用地面积减少18740 hm^(2),主要转出为草地。全旗NDVI增长明显,研究区整体呈变绿趋势;各地类植被指数均有提高,其中草地和未利用地占主导地位。达茂旗植被指数整体呈显著正相关,植被覆盖均呈空间集聚状态;局部空间自相关分析表明,达茂旗南部呈高值区集聚状态,植被覆盖较好,北部呈低值区集聚状态,植被覆盖较差。研究结果可为达茂旗生态修复和建设提供基础数据和科学参考。Based on Remote sensing(RS),Geographic information system(GIS)and Global positioning system(GPS)technology,land use images from 1995 to 2024 were used as the basis,and land use transfer matrix was combined to analyze the temporal and spatial evolution characteristics of land use in Daerhan MAO Mingan United Banner(shortname Damao Banner).Based on hyperspectral remote sensing images,the spatio-temporal evolution of Normalized differential vegetation index(NDVI)was explored,and Land use and cover change was quantitatively evaluated.Then Moran's I index was used to analyze the spatial agglomeration of NDVI.The results showed that grassland was the main land use type in Damao Banner,followed by unused land and cultivated land.Construction land area increased by 9809 hm^(2),which was mainly converted from grassland and cultivated land.The unused land area was reduced by 18740 hm^(2),mainly converted to grassland.NDVI increased obviously,and the whole study area showed a green trend.The vegetation index increased in all regions,and grassland and unused land were dominant.The vegetation index of Damao Banner showed a significant positive correlation,and the vegetation coverage showed a spatial agglomeration state.The local spatial autocorrelation analysis showed that the southern part of Damao Banner was in the state of high value area agglomeration with good vegetation cover,while the northern part was in the state of low value area agglomeration with poor vegetation cover.The results can provide basic data and scientific reference for ecological restoration and construction in Damao Banner.

关 键 词：3S 土地利用 NDVI 空间自相关 达茂旗 

分 类 号：P208[天文地球—地图制图学与地理信息工程]