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敦煌莫高窟重点保护区沙化现状分析

发表时间:2008-07-15  浏览量:1506  下载量:773
全部作者: 林经理,颉耀文,王晓云,马爱功
作者单位: 兰州大学资源环境学院
摘 要: 本文以高空间分辨率QuickBird卫星遥感影像、1∶50 000地形图和《敦煌莫高窟保护总体规划》等资料为数据源,在野外实地考察的基础上,运用遥感(remote sensing,RS)与地理信息系统(geographic information system,GIS)技术,通过人机交互目视解译的方式对敦煌莫高窟保护区的土地利用/覆盖现状、土壤侵蚀现状、重点保护区沙化现状进行了调查。结果显示,重点保护区中沙山总面积为42 701.9 km2,占30.475%,距窟顶最近距离为712 m;平坦沙地面积为34 734.2 km2,占24.788%,直逼窟区,风力侵蚀严重。
关 键 词: 地质学;沙化现状;高分辨率遥感影像;重点保护区;莫高窟
Title: Analyzing the desertification present situation of Mogao Grottoes’ key protected area
Author: LIN Jingli, XIE Yaowen, WANG Xiaoyun, MA Aigong
Organization: College of Earth and Environmental Science, Lanzhou University
Abstract: Taking high spatial resolution remote sensing images, topographic map at the scale of 1∶50 000 and the “Mogao Grottoes Protection Overall Plan” as the data sources and after field investigation, this study applies remote sensing (RS) and geographic information system (GIS) technology to investigate the present situations of land use/land cover, soil erosion in Mogao Grottoes’ protected area, as well as desertification present situation in the key protected area. The result indicates that the area of desert mountain reaches 42 701.9 km2, accounting for 30.475%, and the least distance to the top of cave is 712 m; the area of flat desert reaches 34 734.2 km2, accounting for 24.788%, which is a threat to the cave region with a serious wind erosion.
Key words: geology; desertification present situation; high resolution remote sensing images; the key protected area; Mogao Grottoes
发表期数: 2008年11月第13期
引用格式: 林经理,颉耀文,王晓云,等. 敦煌莫高窟重点保护区沙化现状分析[J]. 中国科技论文在线精品论文,2008,1(13):1506-1510.
 
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