摘要
通过对2000—2009年新疆夏季最小雪盖值进行统计分析,研究近10 a来新疆夏季最小雪盖与永久性冰川之间的相对变化幅度,发现从2005年开始全疆大部分地区(州)的夏季最小雪盖出现负增长。此外,通过趋势线方法对近10 a来新疆夏季最小雪盖的变化趋势进行分析,发现只有伊犁、乌鲁木齐、和田、克州的夏季最小雪盖呈增长趋势,其他地区(州)的夏季最小雪盖都呈负增长趋势。最后,通过分析2007—2009年的最小雪盖和10 a来均值的相对变化幅度,发现最小雪盖在北疆地区变化较大,南疆地区只有巴州发生了较大幅度的变化,其余地区(州)在2007—2009年基本稳定,但总的趋势都是向减小的方向发展。总之,近10 a来新疆夏季最小雪盖基本上是朝着减小的方向发展,并呈现一定的规律性。
By analyzing the relative change extent between the minimum summer snow cover and the permanent glacier in Xinjiang of the past ten years,it shows that the minimum summer snow cover decreased since 2005 in most area. The trend line of the minimum summer snow cover indicates that excepting Yili,Urumqi,Hetian,Kezilesu Kirgiz Autonomous,the summer minimum snow covers in all other areas declined. Finally,by analy-zing the minimum summer snow cover during 2007-2009 and the reletive change extent of the average in the past ten years,it shows that the north ar-ea of Xinjiang has large alternation while the south area of Xinjiang keeps stable except the Bayingolin Mongolia Autonomous has big change and the changes are all lead to smaller. In conclusion,the minimum summer snow cover had a decreasing trend which showed a reliable regularity in the past ten years.
出处
《人民黄河》
CAS
北大核心
2014年第3期19-22,共4页
Yellow River
基金
国家自然科学基金面上项目(41171023)
国家自然科学基金重点项目(41130531)
关键词
最小雪盖
变化趋势
新疆山区
minimum snow cover
trend of changes
mountains of Xinjiang
