干旱区研究 ›› 2022, Vol. 39 ›› Issue (1): 113-122.doi: 10.13866/j.azr.2022. 01.12

• 水土资源 • 上一篇    下一篇

气候变化下的塔里木盆地西南部内陆河流域径流组分特征分析

孙从建(),陈伟,王诗语   

  1. 山西师范大学地理科学学院,山西 太原 030000
  • 收稿日期:2021-07-13 修回日期:2021-09-17 出版日期:2022-01-15 发布日期:2022-01-24
  • 作者简介:孙从建(1986-),男,教授,主要从事生态水文过程、资源评价研究. E-mail: suncongjian@sina.com
  • 基金资助:
    国家自然科学基金项目(41901022);新疆维吾尔自治区区域协同创新专项(上海合作组织科技伙伴计划及国际科技合作计划)(2019E01005);新疆维吾尔自治区创新环境建设专项-天山青年计划(2019Q038)

Stream component characteristics of the inland river basin of the Tarim Basin under regional climate change

SUN Congjian(),CHEN Wei,WANG Shiyu   

  1. College of Geographical Sciences,Shanxi Normal University, Taiyuan 030000, Shanxi, China
  • Received:2021-07-13 Revised:2021-09-17 Online:2022-01-15 Published:2022-01-24

摘要:

气候变化对中亚高山区水循环影响显著,加剧了区域水资源供需矛盾。认识区域内陆河径流组分特征对于水资源管理具有重要意义。基于塔里木盆地西南部提孜那甫河流域过去60 a(1957—2016年)的气象、径流数据,分析了区域气候变化特征及径流组分的响应。结果表明:(1) 过去60 a来,流域气温及山区降水呈现出明显的上升趋势,自2010年以来区域增温增湿趋势更为明显,这一变化下提孜纳甫河夏、秋季径流呈现显著增长。(2) 径流分割结果显示:冰雪融水、地下水及降水对于年径流的贡献率分别为17%,40%及43%;不同的季节的径流组分差异明显,降水对流域夏季径流的贡献较为显著。作为塔里木盆地西南部典型的内陆河流,未来区域气候变化尤其是降水的变化将会对于提孜纳甫河水资源的可持续利用影响显著。

关键词: 提孜纳甫河流域, 气候变化, 径流, 同位素, 径流分割, 塔里木盆地

Abstract:

Climate change has a significant impact on the water cycle in the alpine region of Central Asia, which intensifies the disparity between the supply and demand of regional water resources. Understanding the characteristics of runoff components in regional inland rivers is of great importance for water resource management. Based on meteorological data and runoff data from the Tiznafu River Basin in the southwest of the Tarim Basin from the past 60 years (1957-2016), regional climate change and runoff responses were evaluated in this study. Results showed that the temperature of the whole basin and the precipitation in mountainous areas had an obvious upward trend; moreover, the regional warming and humidification trends had become more pronounced since 2010. Given these changes, the runoff of the Tiznafu River had increased significantly in summer and autumn, although there was no significant change in spring. Using isotope samples, we investigated variation in isotopes in different water sources and analyzed the contribution of different water sources based on isotope hydrograph separation. Melt water, groundwater, and rainfall contributed 17%, 40%, and 43% of the annual stream flow, respectively. There were obvious differences in runoff components in different seasons and the contribution of precipitation to runoff was more substantial in summer. As a typical alpine inland river in the southwest of the Tarim River Basin, regional climate change, especially changes in precipitation, will greatly affect the utilization of the Tizinafu River and its resources in the future.

Key words: Tiznafu River Basin, climate change, runoff, isotope, hydrograph separation, Tarim Basin