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遥感技术与应用  2011, Vol. 26 Issue (3): 375-382    DOI: 10.11873/j.issn.1004-0323.2011.3.375
遥感应用     
天山典型区卫星雪盖的年内变化特征分析
李海星,冯学智,肖鹏峰
(南京大学地理信息科学系,江苏 南京210093)
Satellite Snow Cover Change Analysis within the Year of Typical Area in Tianshan Mountains
LI Hai-xing,FENG Xue-zhi,XIAO Peng-feng
(Department of Geographic Information Science,Nanjing University,Nanjing 210093,China)
 全文: PDF(4207 KB)  
摘要:

利用2000年1月~2001年5月位于天山中段的Landsat TM及ETM+卫星遥感数据,提取逐月雪盖信息,结合研究区数字高程模型数据获取不同地形条件、不同垂直带上的雪盖逐月分布状况,从而分析雪盖的空间分布特征和时间变化规律。研究结果表明,年内雪盖面积与海拔带、坡向带、坡度带之间呈现一定的相关性。总体而言雪盖比率随海拔上升而增大,随坡度增大而减小;雪盖边界高度呈现明显夏秋高、冬春低的变化规律;雪盖面积在特定时间段存在东西坡向上的差异,总体差异小于南北坡向的差异。研究结论为天山水资源的合理利用以及气候与环境变化研究提供科学依据。

关键词: 天山中段卫星雪盖信息提取时空特征年内变化卫星雪盖信息提取时空特征年内变化天山中段    
Abstract:

Using the observation snow cover data from Landsat TM and ETM+ from January 2000 to May 2001,the inter annual temporal and spatial characteristics of snow cover over middle Tianshan mountains are analyzed.Combining with digital elevation model (DEM) data,the distribution of snow cover in different terrain conditions and different altitude per\|month are acquired.After analyzing the spatial distribution and temporal variation regulation of snow cover,it comes to a conclusion that the snow cover within year is correlated with altitude,aspect and slope.On the whole,the ratio of snow cover within year increases when the altitude increases and it decreases when the slope increases.The average height of snow cover boundary is high in summer and autumn but low in spring and winter.The difference of snow cover in aspect west and east is obvious in certain times,but the difference is less than that of the aspect north and south.This study provides a scientific support for utilization of water resource and the research of climate and environment in Tianshan Mountains.

Key words: Middle Tianshan    Snow cover    Information extraction    Temporal and spatial characteristics    Change within year    Satellite snow cover    Information extraction    Temporal and spatial characteristics    Change within year    Middle Tianshan
收稿日期: 2010-10-22 出版日期: 2013-01-23
:  TP 79  
基金资助:

干旱区水循环与水利用新疆自治区重点实验室开放课题(XJYS0907\|2009\|04)资助。

作者简介: 李海星(1985-),女,江苏南京人,硕士研究生,主要从事积雪遥感研究。Email:leehaixing@gmail.com。
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引用本文:

李海星,冯学智,肖鹏峰. 天山典型区卫星雪盖的年内变化特征分析[J]. 遥感技术与应用, 2011, 26(3): 375-382.

LI Hai-xing,FENG Xue-zhi,XIAO Peng-feng. Satellite Snow Cover Change Analysis within the Year of Typical Area in Tianshan Mountains. Remote Sensing Technology and Application, 2011, 26(3): 375-382.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2011.3.375        http://www.rsta.ac.cn/CN/Y2011/V26/I3/375

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