摘要
绿洲城市是干旱区人地关系最为敏感的区域,以TM/ETM+影像为主要数据源,借助遥感、GIS技术和数理统计方法,从数量和空间迁移等角度对典型绿洲城市——奎屯市近16a来的土地利用变化进行了分析。结果表明:奎屯市1993—2009年土地利用发生了显著变化,以耕地、城乡工矿居民用地增加及草地减少为主要特征;土地利用变化整体呈现出时空不均衡、各地类间更替转换程度大、城乡差异明显等特点;土地利用结构上,优势地类草地减少,耕地和城乡工矿居民用地增加,林地2001—2009年增加显著,水域和未利用地变化幅度相对较小;土地利用类型转换上,6大地类间发生了较大程度的更替转换,东部市区以城乡工矿居民用地和林地增加为主要特征,而西部开干齐乡则主要体现在耕地和草地之间的更替;变化趋势上,耕地、林地和城乡工矿居民用地面积会有所增加,而草地、水域和未利用地则呈减少的趋势。
Oasis City is the most sensitive area in arid region.Based on images of TM/ETM＋,the methods of RS,GIS,and statistics was this paper used to carry out a dynamic analysis on the quantitative and spatial characteristics of land-use changes of Kuytun,the typical oasis city,over the past 16 years,which will benefit the sustainable land use of oasis city.The results turned out that the land use of Kuytun had changed a lot from 1993 to 2009 and differed with time and space;great changes also took place between different land-use types;and there were significant differences between the urban areas and rural ones.In terms of its land-use structure,the grassland decreased,forestland increased significantly between 2001 and 2009,and the water body and unutilized land changed a little.With regard to its spatial characteristics,great changes happened to the conversion among six land-use types;the downtown of Kuytun,which lies on the east,developed with the main feature that construction land and forestland increased,and the countryside of Kaiganqi was with the feature of conversion between cultivated land and grassland.For the changing trend,the cultivated land,forestland and construction land would expand,while the grassland,water body and unutilized land would change with a reducing trend.
出处
《水土保持研究》
CSCD
北大核心
2012年第6期147-151,共5页
Research of Soil and Water Conservation
