摘要
遥感技术具有宏观性、综合性和便捷性等特点。为研究松辽平原中部地区第四纪以来的水系演变特征,笔者搜集了研究区的多源遥感数据:Landsat TM数据、Sentinel-2A数据、高分一号数据、谷歌卫星影像以及数字高程模型(DEM),在建立古河道解译标志体系的基础上完成研究区地表及浅埋古河道的解译工作。由古河道的解译成果及解译古河道的新旧关系,联系研究区新构造运动特征反演其水系的演变过程,查明该地区水系第四纪以来先后经历了向心状古大湖时期、南北贯穿时期以及现今受松辽分水岭影响时期,结合三维可视化技术直观地再现各个时期的自然概况,并从生态环境的角度出发,阐述水系演变对当地生态环境的影响。
Remote sensing technology is characterized by macrocosm,comprehensiveness and convenience.In order to study the evolution of the water system since the Quaternary in the central Songliao Plain,the authors collected multi-source remote sensing data from the study area,including Landsat TM data,Sentinel-2 A data,high-resolution No.1 data,Google satellite image,and digital elevation model( DEM).On the basis of establishing the palaeo-river channel interpretation marker system,the interpretation of the surface channel and the shallow buried palaeo-channel of the study area was completed.From the interpretation of the palaeo-channel and the relationship between the relatively new and old channels,integrating the characteristics of neotectonics in the study area,the evolution process of the water system is inferred.It has been found that the water system in the study area has experienced the centripetal palaeo-great lake period,north-south connecting period and current Songliao watershed-affected pariod since Quaternary.The natural situation of each period is visually reproduced-using the threedimensional visualization technology.Moreover,the impact of the evolution of the water system on the local ecological environment is explained.
作者
张配
姜琦刚
刘正宏
师超
ZHANG Pei;JIANG Qi-gang;LIU Zheng-hong;SHI Chao(College of Earth Sciences,Jilin University,Changchun 130061,China;College of Geo-exploration Science and Technology,Jilin University,Changchun 130026,China)
出处
《世界地质》
CAS
2019年第4期1099-1110,共12页
World Geology
基金
全国自然资源遥感综合调查与信息系统建设项目(DD20160077)
关键词
遥感
水系演变
古河道
新构造运动
生态环境
remote sensing
river system evolution
palaeo-channel
neotectonics
ecological environment
