干旱区季节性积雪融雪期含水率变化及其模拟—以新疆军塘湖流域为例  

Seasonal changes of snow moisture in arid area during snowmelt period and the simulation

作　　者：王慧[1,2] 刘志辉[1,2,3,4] 张波[1,2] 

机构地区：[1]新疆大学资源与环境科学学院,乌鲁木齐830046 [2]新疆大学教育部绿洲生态重点实验室,乌鲁木齐830046 [3]新疆大学干旱生态环境研究所,乌鲁木齐830046 [4]干旱半干旱区可持续发展国际研究中心,乌鲁木齐830046

出　　处：《干旱区资源与环境》2013年第8期131-136,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金面上项目:天山北坡典型流域积雪-冻土水热耦合中融水产汇流机制研究(41171023)资助

摘　　要：积雪含水率是干旱区季节性积雪出流的重要条件。描述了融雪期干旱区季节性积雪含水率的变化,利用数理统计方法分析了影响因素,并采用多元统计模型进行模拟。结果表明:1)融雪期干旱区季节性积雪含水率变化范围在0-8%之间。积雪含水率融雪前期变化较小,在0-1%之间,融雪后期变化幅度增加,在1-8%之间;2)融雪前期、后期积雪含水率大致从下层至上层依次减少,中期反之;3)气温是积雪含水率变化的主要影响因素,其具有滞后性。Snow moisture is an important condition for the snowmeh water flow of seasonal snow cover in arid area. This paper described changes of snow moisture during snowmeh period of seasonal snow cover in arid area, ana- lyzed influential factors using mathematical statistical method and simulated snow moisture changes with multiva- riate statistical regression model. The results showed that： （1） Snow moisture of seasonal snow in arid area changed between 0 -8%. Snow moisture had small changes by 0 -1% during the early snowmeh period, but had a sudden increase in the late snowmelt period with 1 -8 %. （2） It had been reducing from the lower to up- per layer of snow during the early and later snowmelt period, but turned increase in medium - term of snowmeh period. （3） The air temperature was the main influencing factors for the snow water content changes.

关 键 词：积雪含水率 融雪期 季节性积雪 干旱区 

分 类 号：P426.635[天文地球—大气科学及气象学]