【作者】 萨楚拉； 刘桂香； 王牧兰； 包玉海； 曹新涵；

【Author】 Chula Sa;Guixiang Liu;Mulan Wang;Yuhai Bao;Xinhan Cao;College of Geographical Science Inner Mongolia Normal University;Grassland Research Institute of Chinese Academy of Agricultural Sciences;Inner Mongolia key laboratory of remote sensing and geographic information system,Inner Mongolia Normal University;

【机构】 内蒙古师范大学地理科学学院； 中国农业科学院草原研究所； 内蒙古自治区遥感与地理信息系统重点实验室；

【摘要】 本文利用2002年10月到2012年3月的近10年MODIS积雪产品,按月最大面积合成,分析了北方草原5省区积雪覆盖面积的时空变化特征。结果表明,时间上,近10年北方草原五省区积雪面积年内变化整体上呈现单峰的波动特点,年内最大积雪面积发生在1月份,年内积雪面积最小的是10月份。北方草原五省区积雪面积年际变化整体上呈现减少的趋势,积雪面积每年平均减少率为35.17km2。空间上,近10年长时间积雪覆盖区域主要分布在大兴安岭、呼伦贝尔高原、乌珠穆沁盆地、阿勒泰山脉、天山北麓、昆仑山脉西南部、西藏东部地区、阿里地区、林芝地区东部、那曲地区东部、山南地区南部和沿江河谷地带、青藏高原边缘的甘肃祁连山一带、巴颜喀拉山、阿尼玛卿山、昆仑山等地。更多还原

【Abstract】 The MODIS snow products from October 2002 to March 2012 were used in this paper.The spatiotemporal variations of snow covered area in 5 provinces of northern grasslands of China were analyzed by using maximum composite method.The result indicates that in temporal scale the snow covered area in northern grassland regions characterized unimodal pattern during previous ten years,with a largest value in January,and lowest in October.In general,the snow covered area in northern grassland regions experienced decreasing trend,with an annual decreasing rate of 35.17km~2.Spatially,the permanent snow covered area is mainly distributed in the Greater Khingan Mountains,Hulun Buir plateau,Wuzhumuqin basin,Aletai mountain,north of the Tianshan Mountains,southwestern of KunLun mountains,eastern region of Tibet,Ali area,eastern Linzhi area,Eastern Naqu,southern and south along the Yangtze River Valley,the Qilian Mountains area in Gansu,which edged with the Tibetan Plateau,Bayan Har mountain,Anima,Qing Shan Kunlun Mountains.更多还原