摘要
由我国和巴西自行研制发射的地球资源一号卫星(CBERS-1)传回的遥感数据,可用于荒漠化地区的生态评价。CBERS-1数据图像经过波段间的配准和几何纠正后,合成研究区的假彩色图像,用于荒漠化信息和地类的解译。对影像数据进行KT转化和低通滤波等空间增强处理后,建立CBERS-1数据合成图像的地物解译标志,在ARC/INFO软件的支持下,进行地类的解译和目视屏幕直接勾绘的方法,获得古浪县2000年荒漠化土地现状图和相关的土地利用数据。通过统计分析,古浪县2000年共有各类荒漠化土地430490.627hm2,该县的荒漠化评价指数为2.162,属于中度荒漠化地区,但个别乡镇的荒漠化程度达到重度,是荒漠化现象较普遍和严重发生区。
CBERS-1 is earth resource satellite that was cooperated manufacture by China and Brazil at first. We can use CBERS-1 data to assess ecoenvironment in desertified area. Through each band match and geometrical correct for CBERS-1 data image, and compound pseudo image of study area, that is use to interpret information and land types of desertification. It obtain temporal map of desertified land and relevant data of landuse in Gulang county at 2000, by make KT transform and low frequency convolution filtering in image data, and establish object interpret symbols of CBERS-1 data composite image, and do land type interpretation and eye screen to outline directly depend on ARC/INFO software. Through statistic and analysis, there are 430 490.627 hm2 of desertified land in Gulang county at 2000. Though Gulang county is belong mid degree desertified area by desertificationindex is 2.162, but several town is sever and desertification phenomenon is ubiquitous and occur severely.
出处
《水土保持学报》
CSCD
北大核心
2003年第1期63-66,共4页
Journal of Soil and Water Conservation
基金
资源一号卫星在我国西部荒漠化地区生态建设中的应用示范"项目研究内容
