信息重分类在土地覆盖动态监测中的应用——以澜沧江梯级电站库区为例  

Information Reclassification and Its Application in the Land-cover Dynamics Monitoring——Taking Lancangjiang Cascade Hydropower Stations as an Example

作　　者：刘洪江[1,2] 陈丽晖[3] 刘连忠[4] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,四川成都610041 [2]中国科学院研究生院,北京100039 [3]云南大学云南省地理研究所,云南昆明650223 [4]重庆师范大学初等教育学院,重庆400700

出　　处：《山地学报》2009年第6期752-756,共5页Mountain Research

基　　金：国家自然科学基金资助项目(40161010)~~

摘　　要：根据土地覆盖动态监测的需求,设计了重分类方法,对遥感土地覆盖分类图及坡度分类图进行了分类码的设计和GIS数据建库的讨论,通过信息叠加可以得到所需要的信息,进而可以分析不同土地类型及在不同坡度类型下地类之间的相互转化规律。方法应用于澜沧江梯级电站库区,对1988年、1996年和2000年的土地覆盖资料进行了分析,并通过野外实地调查资料进行验证,得出该区土地覆盖时空变化规律,进而可以为该区人类活动和环境之间相互关系与产沙机理提供分析依据,表明信息重分类方法在土地覆盖动态变化监测及其他相关领域具有十分重要的应用价值。According to the demands of land-cover dynamic monitoring, the reclassification method is designed. The designed code is discussed for land-cover maps which are obtained by remote sensing and slope map acquired through GIS database which is discussed also. The desired information can be obtained by means of GIS overlay. Then, the different land types and the role of mutually transform under the different slope type can be analyzed. The method is applied to Langcangjiang River cascaded hydropower station area, in which three stages land-cover data obtained through interpreting the Thematic Mapper （TM） image of 1998,1996 and 2000 are analyzed. Therefore, the temporal and space variety rules are deduced after verified by the field investigation data. As a result, this may p,＇ovide the evidence for analyzing relationship between human activities and the mechanism of sediment deposit. It indicated the information reclassification method has an important application value in the land-cover dynamic monitor and other correlation fields.

关 键 词：信息重分类 遥感 土地覆盖 动态监测 澜沧江 梯级电站 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]