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2008~2018年东北三省积雪覆盖时空演变研究

发表时间:2020-10-10  浏览量:641  下载量:66
全部作者: 陈鹏,赵洪阳
作者单位: 吉林师范大学旅游与地理科学学院
摘 要: 以东北三省为研究区,利用遥感和地理信息系统(geographic information system,GIS)等方法获取研究区域内的积雪信息,以了解东北三省的积雪时空分布及演变特征,为灾害防御、气候变化研究等提供有利信息。采用中分辨率成像光谱仪(moderate resolution imaging spectrometer,MODIS)每月积雪覆盖产品,提取2008~2018年10个积雪年的积雪覆盖信息等数据,借助GIS空间分析技术等方法实现东北三省10个积雪年积雪覆盖的时空演变。结果表明:东北三省积雪存在着明显的季节性和年际变化特征;大兴安岭北部地区、小兴安岭地区、乌苏里江地区及长白山地区是积雪最早积累和最迟融化的区域,最大积雪持续时间超过6个月以上;东北三省积雪覆盖面积自西向东(自平原区向山地区)逐渐增加,呈阶梯式递进。整体来看,东北三省10个积雪年的积雪变化趋势并不明显,积雪等级变化主要集中在1~7级。
关 键 词: 大气科学;东北三省;积雪覆盖;时空演变;MODIS
Title: Analysis on the spatial and temporal evolution of snow cover in the three northeastern provinces China from 2008 to 2018
Author: CHEN Peng, ZHAO Hongyang
Organization: School of Tourism and Geographical Science, Jilin Normal University
Abstract: Taking the three northeastern provinces China as the research area, using remote sensing and geographic information system (geographic information system, GIS) and other methods to obtain snow information in the study area, in order to understand the spatial and temporal distribution and evolution of snow in the three northeastern provinces, for disaster prevention and climate change research etc. provide beneficial information. Moderate resolution imaging spectrometer (MODIS) monthly snow cover products are used to extract snow cover information of 10 snow years from 2008 to 2018. And the spatial and temporal evolution characteristics of snow cover in 10 snow years in the three northeastern provinces are analyzed with the help of GIS spatial analysis technology. The results show that the snow cover in the three northeastern provinces has obvious seasonal and interannual changes. The northern area of the Da Xing’anling area, the Xiao Xing’anling area, the Wusuli river area and the Changbai mountain area are the earliest areas of snow accumulation and the latest melting, and the maximum snow duration lasts more than 6 months. The snow cover area of the three northeastern provinces gradually increases from west to east (from the plain area to the mountain area), and progresses stepwise. On the whole, the snow cover change trend in the 10 snow years in the three northeastern provinces is not obvious, and the snow cover level changes are mainly concentrated in 1-7 level.
Key words: atmospheric sciences; three northeastern provinces China; snow cover; spatial and temporal evolution; MODIS
发表期数: 2020年9月第3期
引用格式: 陈鹏,赵洪阳. 2008~2018年东北三省积雪覆盖时空演变研究[J]. 中国科技论文在线精品论文,2020,13(3):324-341.
 
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