CAJ | 학술논문

冰川积雪是寒区水资源的重要组成部分，在全球气候变暖背景下，进行寒区冰雪消融特性研究和融水量估算具有重要意义。以青藏高原纳木错流域为研究对象，采用2004—2013年MODIS数据对纳木错流域冰雪消融时空变异规律进行研究。结果表明：纳木错流域冰雪覆盖率年变化曲线呈“双峰型”，7—8月冰雪消融最为剧烈，而2月和11月是季节性积雪的主要积累阶段；冰雪覆盖量在空间分布上差异明显，地势较高、坡度较陡、阴坡比例较大的流域东南侧年均冰雪覆盖率较大，而流域西北侧与之相反。为进一步探讨气温变化对冰雪消融的影响，选取研究区内典型冰川融水补给区域———曲嘎切流域2013年8月实测数据，建立气温与冰雪融水径流间函数关系，模拟结果显示两者呈指数相关（ R2=0.7105），表明气候变暖、温度上升将引起寒区冰雪消融量的急剧增加。
빙천적설시한구수자원적중요조성부분，재전구기후변난배경하，진행한구빙설소융특성연구화융수량고산구유중요의의。이청장고원납목착류역위연구대상，채용2004—2013년MODIS수거대납목착류역빙설소융시공변이규률진행연구。결과표명：납목착류역빙설복개솔년변화곡선정“쌍봉형”，7—8월빙설소융최위극렬，이2월화11월시계절성적설적주요적루계단；빙설복개량재공간분포상차이명현，지세교고、파도교두、음파비례교대적류역동남측년균빙설복개솔교대，이류역서북측여지상반。위진일보탐토기온변화대빙설소융적영향，선취연구구내전형빙천융수보급구역———곡알절류역2013년8월실측수거，건립기온여빙설융수경류간함수관계，모의결과현시량자정지수상관（ R2=0.7105），표명기후변난、온도상승장인기한구빙설소융량적급극증가。
Glacier and snow is an important part of water resourcesat high altitudes,and the meltwater is the main driving force of frozen soil erosion,therefore identifying themelting characteristics and ablation calculation is of sig-nificance in alpine region. In this paper,Nam Co basin as the study area,we hope to get the temporal and spatial changes in this place by collecting weather,terrain,RS and MODIS data from 2004 to 2013,using GIS,ENVI and MRT processing software. We found:the annual variation curve of glacier and snow coverage in Nam Co basin was"double-peak mode". The most intense ablation period was July and August,while the February and November was the main accumulation stage of seasonal snow;glacier and snow coverage had significant differences in spatial dis-tribution,as the southeast basin with a higher ground,steeper slope,and larger proportion shady,it is larger than the northwest part,but the northwest side has larger changes in snow cover during an annual coverage is smaller. In addition,the typical watershed in glacierized area of the Nam Co basin,Qugaqie catchment,was selected to estab-lish the relationship between air temperature and meltwater runoff with the measured data in August,2013. The simulation result showed that daily discharge in ablation period had a good correlation with temperature.