摘要
本研究旨在探索用卫星遥感资料开展高原牧区上地资源调查和监测的实用方法。研究区设在四川省若尔盖高原,试验区面积6000平方公里。试验证明,在这样的地区可以利用MSS图象编制1:1O万土地利用图,用TM图象编制1:5万土地利用图。其图斑合格率分别达到93.3％和95.5％,制图精度达到国家颁布标准。此外,还用遥感方法调查了草原砂化和沼泽地分布,资料表明近20年来区内有沙地扩大和沼泽地缩小的趋势,进行了土地资源动态监测的初步尝试。
This paper deals with the practical way to understand the current land use inventory by using satellite remote sensing technique in west Pasture area of China where, to date, there was not a avaiable aerial photo and topographic map and ground investigation was difficult for the hard physical condition.
The test area of this research was of 6000m2 located on the plateau of Ruoergai county, Sichuan province.Two current land use maPs on the scale 1 : 50000 and 1 : 100000 have been made out by using TM image and MSS image respectively, based on integration of visual interpretation with ground truth investigation.The location precision,classification precision and mapping precision were up to the standard of The National Regulation of Current Land Use Inventory'.The maps which were examed in the field.it quantified by 95.5% (scale 1 : 50,000) and 93.3%(1 : 100,000)in spots. Besides,the dynamic tendency of land resoures was monitored based on the maps of marshtypes and Changing Sandy Land in Pasture, it showed that the marsh was decreasing and the sandy land was expanding during the past 20 years.
出处
《西南农业学报》
CSCD
1990年第1期73-78,共6页
Southwest China Journal of Agricultural Sciences
关键词
土地资源调查
遥感技术
动态监测
Land resoures survey,Remote sensing,Satellite image,Pasture of Ruoergai county, Sichuan
