阿拉善地区荒漠化遥感监测及动态变化  

Monitoring of desertification and sandification status and dynamic change with remote sensing for Alashan

作　　者：周建秀 谷雨 达来[1] 刘志宁[4] 

机构地区：[1]内蒙古阿拉善盟环境保护局,巴彦浩特750306 [2]内蒙古自治区环境监测中心站,呼和浩特010010 [3]南京信息工程大学,南京210044 [4]内蒙古阿拉善盟气象局,巴彦浩特750306

出　　处：《干旱区资源与环境》2014年第1期126-130,共5页Journal of Arid Land Resources and Environment

摘　　要：以内蒙古阿拉善地区为研究区,利用20世纪70年代末、80年代末、90年代末、2010年4个时期的Landsat MSS/TM遥感资料为信息源,运用人机交互目视解译方法以及地理信息系统的空间分析功能,获得了荒漠化景观数据,并在此基础上进行了阿拉善地区荒漠化现状与动态变化分析。结果显示:20世纪70年代末-90年代末,研究区荒漠化土地面积由168330km2增至178519km2,20年间增加了10189km2,平均每年增加509.5km2;而20世纪90年代末至2010年间,研究区荒漠化发展趋势总体得到遏制,生态环境治理速度超过了荒漠化扩展速度,荒漠化土地面积减少了3175km2。The desertification landscape data for Alashan were derived from the remote sensing（in Alashan Area） and GIS spatial analysis data with the visual interpret-tationmethod.After completing the remote sensing interpretation,ground verification,practicalresearch and so on,we analyzed the desertification and sandification status and the dynamic changes.From 1970 to the end of 1990,Alashan had appeared a tendency of increasement of desertification,and the increase rate reached to 509.5km2per year.However,after 2000,the desertification appeared a decrease trend,and the desert land had been decreased for about 3175km2in the next 10 years.Currently,the desertification of Alashan has been inhibited.The ecological governing area of Helan mountain area,North west of Tengger desert and Ejina Heihe basin trended to be better now.The ecological ungoverning area of northwest of Badan Jilin desert and Ejina Oasis still appeared atendency of desertification.

关 键 词：荒漠化 遥感监测 动态变化 阿拉善地区 

分 类 号：P931[天文地球—自然地理学]