摘要
本文以内蒙古锡林郭勒草原中部锡林浩特市地区为研究区,应用陆地资源卫星TM影像资料,编绘出1:50万植被图;应用1992年12月28日的NOAA气象卫星AVHRR数据,结合地面准同步实测雪深数据及有关气象台站的记录,绘制出雪盖分布范围和积雪深度图。在对雪盖图和植被图叠加分析的基础上,得出1992年冬季研究区积雪掩埋牧草高度等级图。在此基础上,探讨了积雪分布和草场植被结构的空间重叠对应关系,为牧区积雪灾害危险性评价提供了科学依据。
Winter snow cover is an important ecological factor influencing animal husbandry de-velopment of the temperate steppe. This paper selects Xilinhot in Inner Mongolia as a studyarea.Using 1980's Landsat—TM image, a vegetation map(scale 1 :500 000)was compiled:byanalysing the NOAA—AVHRR data of 28 Dec.1992,combining the snow depth survey andmeteorologic station record,a map of snow cover distribution was drawn.Overlaying the twomaps,a grade map of the height of forage hidden by snow cover in the study area in winter in1992 was compiled. The influence of snow cover on animal husbandry was discussed,whichprovides the foundation for evaluation on the danger of snow disaster.It was found thatheavy snow cover,like 1992,could seriously damage forage by hiding it.
出处
《冰川冻土》
CSCD
北大核心
1994年第3期238-244,共7页
Journal of Glaciology and Geocryology
基金
属国家"八五"重点科技攻关课题
关键词
雪
植被
空间关系
遥感分析
草原
:snow cover,vegetal cover,spatial overlaying relation, remote sensing analysis