摘要
胡杨林对塔里木河干流区域的生态稳定和安全具有重要的现实意义。为了解胡杨林的分布变化情况,以高分辨率遥感影像为主要数据源,结合实地调查与空间叠加等统计方法,分析了2010-2015年塔里木河干流区域中不同河段胡杨林变化区域的面积、用地类型及其空间分布特征,为塔里木河干流胡杨林恢复与保护提供信息服务。结果表明:①从空间分布变化来看,塔里木河干流胡杨林整体呈退缩趋势,变化区域主要集中在上、中游,下游胡杨林面积变化较小,下游水分条件较好的地区胡杨林恢复效果明显;②从空间分布变化的转化类型来看,胡杨林转化为耕地的面积最大,占干流胡杨林变化总面积的97.56%,其中尉犁县、沙雅县、轮台县胡杨林变为耕地的现象较明显;③胡杨林变化区域集中在距河道2 km以内的区域中,且随着距河道距离的增加变化区域面积不断减少。
Populus euphratica has important practical significance for the ecological stability and safety of the mainstream of Tarim River.In order to understand the distribution of populus euphratica,taking the high-resolution remote sensing images as the main data source,combining with the field survey and the statistical methods,we analyzed the area,land type and spatial distribution characteristics of populus euphratica in different sections of the Tarim River from 2010 to 2015,which could provide some information services for the restoration and protection of populus euphratica.The results show that(1)the populus euphratica in the main stream of Tarim River shows a trend of shrinking,the change area are mainly concentrated in the upstream and midstream of main river,and the area of populus euphratica in the downstream of Tarim River is less changed.(2)From the perspective of the spatial change type,the area of populus euphratica transforming into cultivated land is the largest,accounting for 97.56%of the change area.The phenomenon of transforming into cultivated land is more obvious in Yuli,Shaya and Luntai.(3)The variation area of populus euphratica are concentrated in the area within 2 km from the river channel,and with the increase of the distance from the river,the area of variation area decreases.
出处
《地理空间信息》
2020年第9期48-51,I0006,共5页
Geospatial Information
关键词
胡杨林
空间变化特征
用地类型
叠加分析
塔里木河干流
populus euphratica
spatial variation characteristic
land type
overlay analysis
the mainstream of Tarim River
