新疆典型流域积雪遥感信息系统数据库的建立

天山山区冬季积雪深厚，稳定积雪期较长，利用积雪遥感图象可以动态监测大面积的积雪变化，有效地调查大范围的积雪资源状况，积雪遥感监测和积雪遥感制图涉及多方面的资料，积雪数据库是积雪遥感监测系统必不可少的一部分。本文就新疆典型流域积雪遥感信息系统数据库的建立，数据库之间的数据格式转换，接口，可视化界面等进行讨论。

ESTABLISHMENT OF DATABASE FOR SNOW REMOTE SENSING MONITORING SYSTEM IN TYPICAL BASINS IN XINJIANG

Winter snow cover in the Tianshan Mountains is thick and its stable duration is long. It isvery effective and significant for snow monitoring and assessment using remote sensing techniques in Xinjiang. Snow monitoring and digital snow mapping are involved with many data of different sources. Snow database is one part of snow remote sensing and monitoring system. Inthis paper, the establishment of snow database for remote sensing information system in the typical basins in Xinjiang is discussed. Urumqi River basin and Gongnaisi River basin in west Tianshan Mountains are chosen as target area for the above study. The snow database includes (1) statistical database (meteorological and hydrological data, daily mean temperature, precipitation, snow depth, volume of run-off from 1990 to 1997, characteristic parameters of selectedbasins and area of classified snow-cover. ); (2) graphical database (river system map, basinboundary, monographic map, maps of highway net, lakes and location of weather stations andhydrological stations); (3) topographical database (digital elevation model and digital terrainmodel); (4) remote sensing image database (NOAA raw image data, geometry rectified imagedata and classified snow-cover image data). Also in this paper, data exchange or transform between the above four databases and the visual interface compiled by Visual Basic are introduced.