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Five decades of glacier changes in the Hulugou Basin of central Qilian Mountains, Northwest China

ISSN号：1674-6767
期刊名称：Journal of Arid Land
时间：2014
页码：159-165
分类：P468.025[天文地球—大气科学及气象学]
作者机构：[1]西北师范大学地理与环境科学学院,兰州730070, [2]中国科学院寒区旱区环境与工程研究所,兰州730000
相关基金：实验室创新群体科学基金（Y211661001）; 国家重大科学研究计划项目（2013CBA01801）; 国家自然科学基金面上项目（41471058）;国家自然科学基金创新研究群体项目（41121001）资助
相关项目：动力学模式运用于区域尺度冰川变化预测的几个关键问题研究

作者： Chen Hui, Li ZhongQin, Wang PuYu, Lai Zhongping,|

关键词：积雪时空分布, MODIS10A2, 积雪覆盖面积, 积雪频次, 新疆阿尔泰地区, temporal and spatial distribution of snow , MODIS10A2 , snow cover area, snow cover frequency , Altai region of Xinjiang

中文摘要：

基于2001-2014年的MODIS10A2积雪产品数据,对新疆阿尔泰地区积雪的年际变化特征、年内变化特征及空间分布进行了分析研究,得到以下结论：1）年内积雪一般由10月中旬左右便开始累积建立,在第二年1月份积雪覆盖面积到最大值,7月份积雪覆盖面积达到最小值,其中,冬季积雪面积所占比例最大,夏季最小。2）2001-2014年新疆阿尔泰地区积雪覆盖面积呈减少趋势。阿尔泰地区积雪空间分布极不均匀,北部积雪分布明显多于南部,山区及高海拔地区为积雪频次分布的高值区,平原及流域地区为积雪覆盖频次的低值区。3）永久性积雪主要分布在阿尔泰山北部的高海拔区（3000-3923m）,且面积较小。

英文摘要：

Based on MODIS10A2 snow product data from 2001 to 2014, temporal and spatial distribution characteristics of the snow cover in Ahai region, Xinjiang were investigated in this study. The main conclusions are follows ：（ 1 ） Accumulation of snow started in mid - October, the maximum and minimum value of snow - cover area （SCA） occurred in January and July respectively. Seasonally, the proportion of SCA in winter was the largest and that in summer was the least. （2） The SCA showed a downward trend in Altai region of Xinjiang during 14 years （2001 -2014）, and its spatial distribution was extremely uneven. The SCA in the North of Ahai region was larger than that in the South. High frequency of snow cover was located in mountain area and low frequency in plain and downstream area. Due to summer snow was mainly consisted of permanent snow, thus no obvious change occurred, but there was an increasing trend in autumn and decreasing tendency both in winter and spring. （3） Permanent snow was mainly distributed in high altitude area （3000 -3923m） of the Northern Altai Mountains with less area.

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