地理科学 ›› 2018, Vol. 38 ›› Issue (11): 1933-1942.doi: 10.13249/j.cnki.sgs.2018.11.021

• • 上一篇    

增温增湿环境下天山山区降雪量变化

邓海军1,2,4,5(), 陈亚宁2, 陈忠升3   

  1. 1.福建省陆地灾害监测评估工程技术研究中心,福建 福州 350007
    2.中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室,新疆 乌鲁木齐 830011
    3.西华师范大学国土资源学院,四川 南充 637002
    4.湿润亚热带山地生态国家重点实验室培育基地,福建 福州 350007
    5.福建师范大学地理科学学院,福建 福州 350007
  • 收稿日期:2017-11-20 修回日期:2018-03-12 出版日期:2018-11-20 发布日期:2018-11-20
  • 作者简介:

    作者简介:邓海军(1987-),男,湖南隆回人,博士,讲师,主要从事山区气候水文过程及流域水循环研究。E-mail: denghj@fjnu.edu.cn

  • 基金资助:
    国家自然科学基金项目 (41807159)资助

Changes of Snowfall Under Warmer and Wetter in the Tianshan Mountains

Haijun Deng1,2,4,5(), Yaning Chen2, Zhongsheng Chen3   

  1. 1.College of Geographical Sciences, Fujian Normal University, Fuzhou 350007, Fujian, China
    2.State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, hina
    3. College of Land and Resources, China West Normal University, Nanchong 637002, Sichuan, China
    4. Fujian Provincial ngineering Research Center for Monitoring and Assessing Terrestrial Disasters, Fuzhou 350007, Fujian, China
    5. State Key Laboratory Breeding Base of Humid Subtropical Mountain Ecology, Fuzhou 350007, Fujian, China
  • Received:2017-11-20 Revised:2018-03-12 Online:2018-11-20 Published:2018-11-20
  • Supported by:
    National Natural Science Foundation of China(41807159)

摘要:

基于APHRO’s气温和降水数据集,运用气温阈值模型,分析了1961~2015年间天山山区降雪量变化特征。研究表明,自1961年以来,天山山区升温趋势显著,速率为0.027℃/a,且冬半年的升温速度大于夏半年。同时,3 000 m海拔以上区域的平均气温上升到0℃左右。冬季降水的增加速率为0.42 mm/a(P<0.01),春季和夏季的降水量呈减少趋势。降雪量变化时空差异显著,3 000 m海拔以上区域降雪随气温的升高而增加,而3 000 m以下区域降雪随气温的升高而减少。最大降雪量气温是控制降雪变化的关键因子,当平均气温低于最大降雪量气温时,随气温升高降雪量呈增加趋势;当平均气温高于最大降雪量气温时,随气温升高降雪量呈减少趋势。

关键词: 气候变化, 降雪, 气温阈值模型, 天山山区

Abstract:

Snow as a land-cover type that is mainly distributed at the high latitude and high altitude regions. Snowfall, as are main precipitation type in mountainous areas, presents significant temporal and spatial difference which was affected by climate change. In this study, based on APHRO’s dataset and temperature threshold model to analyze snowfall changes in the Tianshan Mountains during 1961-2015. Results indicated that: 1) Temperature showed increasing trend in the Tianshan Mountains since 1961, with a rate of 0.027℃/a. And temperature increase rate in winter was higher than that in summer. Meanwhile, the average air temperature of elevation above 3 000 m is rise to around 0℃ during 1961-2015. 2) Precipitation exhibited significant increasing with a rate of 0.42 mm/a (P<0.01) in winter, while decrease in spring and summer. 3) Snowfall changes were characterized by temporal and spatial variations. Snowfall presented positive relationship with air temperature in the regions with elevation over 3 000 m, while negative relationship in regions with elevation below 3 000 m. 4) Maximum snowfall temperature is a key factor to understanding changes of snowfall under warming. When mean temperature is below/above maximum snowfall temperature, snowfall usually increases/decreases with increased warming. Therefore, study on the snowfall variations in mountainous areas can be very helpful to understand the effects of climate change on hydrology process in mountainous areas.

Key words: climate change, snowfall, temperature threshold model, the Tianshan Mountains

中图分类号: 

  • P467