摘要
采用美国陆地资源卫星两期卫星遥感图像，从缀块水平研究了祁连山东段地区1994-2008年的冰雪景观变化．研究结果表明，2008年祁连山东段地区冰雪景观与1994年同期相比，缀块总数量缩减了28．2％；冰雪景观总面积减少了19．6％；冰雪景观总体形状趋于复杂，10～100hm^2和1000hm^2以上的缀块形状复杂度变大，〈1hm^2和100～1000hm^2的缀块形状变化不显著；冰雪景观的总体破碎度减小，连接度增大，景观稳定性增加．
Remote sensing satellite images from the U. S. land satellite was employed to study thechange of snow and ice on patch level during 1994-2008 in the Eastern Qilian Mountains. The resultsshowed that the total number of patches and the total area were reduced by 28. 2 %and 19.6 %. The gen-erally size of snow and ice tended to be complex. The size of patches in 104100 hm^2 and over 1 000 hm^2 be-came more complex. However,the size of patches below 1 hm^2 ,and 100 hm^2 to 1 000 hm^2 was stable. Theseparability of snow and ice landscape was reduced, the continuance increased and landscape stability enhanced during 1994-2008.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2009年第4期120-125,共6页
Journal of Gansu Agricultural University
关键词
冰雪景观
变化
稳定性
snow and ice
change
stability
