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中国沙漠 ›› 2018, Vol. 38 ›› Issue (2): 401-409.DOI: 10.7522/j.issn.1000-694X.2017.00100

• 天气与气候 • 上一篇    下一篇

霸王(Sarcozygium xanthoxylon)灌木年轮记录的1902-2015年阿拉善荒漠中部气候干湿变化

丁爱军1,2, 肖生春1, 彭小梅1, 田全彦1,2   

  1. 1. 中国科学院西北生态环境资源研究院 内陆河流域生态水文重点实验室, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2017-10-13 修回日期:2017-12-09 出版日期:2018-03-20 发布日期:2018-03-20
  • 通讯作者: 肖生春(E-mail:xiaosc@lzb.ac.cn)
  • 作者简介:丁爱军(1993-),男,甘肃岷县人,硕士研究生,主要从事树木年轮学研究。E-mail:dingaijun15@mails.ucas.ac.cn
  • 基金资助:
    国家自然科学基金项目(41471082);国家重点研发计划重点专项(2016YFC0501001);中国科学院STS-HHS计划项目

Wet/dry Variation Recorded by Sarcozygium xanthoxylon Tree-rings in the Middle of Alashan Desert, China

Ding Aijun1,2, Xiao Shengchun1, Peng Xiaomei1, Tian Quanyan1,2   

  1. 1. Key Laboratory of Ecohydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-10-13 Revised:2017-12-09 Online:2018-03-20 Published:2018-03-20

摘要: 基于阿拉善荒漠中部的4个霸王(Sarcozygium xanthoxylon)样点建立的区域轮宽年表,探讨了霸王径向生长对气候变化的响应及阿拉善荒漠中部区域1902-2015年的干湿变化。结果表明:霸王的径向生长主要受到生长季及前期降水(当年4-7月和前一年10-12月降水)影响。年代际尺度上,区域年表共记录了1920s初-1930s初、1940s初以及1970s末-1980s末3个干旱时段和1900s末-1920s初、1930s、1960s中-1970s中以及1980s末-至今4个湿润时段。区域气候干湿变化以2~8、11、16~32 a周期最为明显,在1970s末发生了周期性震荡。本研究所揭示的区域百余年来气候干湿变化波动状况,可为区域环境演变和荒漠化防治提供气候背景代用资料和决策依据。

关键词: 阿拉善荒漠, 灌木年轮, 霸王(Sarcozygium xanthoxylon), 气候响应, 干湿变化

Abstract: Based on the regional chronology established by the four ring-width standard chronologies of Sarcozygium xanthoxylon in the middle of Alashan Desert, we studied the response of Sarcozygium xanthoxylon radial growth to climate change and the wet/dry variation recorded by regional chronology. The results showed that the radial growth of Sarcozygium xanthoxylon was mainly affected by the pre-growing and growing season precipitation (October-December in previous year and April-July in current year). On the interdecadal scale, three dry periods were identified in the middle of Alashan Desert:the early 1920s to early 1930s, the early 1940s, the late 1970s to late 1980s; Four wet periods were the late 1900s to early 1920s, 1930s, the mid-1960s to mid-1970s, the late 1980s to the present. According to the results of wavelet analysis, the regional chronology in the middle of Alashan Desert had significant period cycles of 2-8 a, 11 a and 16-34 a, and the periodic oscillation occurred at the end of 1970s. These results could provide climate change information and decision-making basis for regional environmental evolution and desertification control.

Key words: Alashan Desert, shrub tree-rings, Sarcozygium xanthoxylon, climate response, wet/dry variation

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