地理科学 ›› 2014, Vol. 34 ›› Issue (12): 1518-1525.doi: 10.13249/j.cnki.sgs.2014.012.1518

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新疆博尔塔拉河表土孢粉组合与植被关系研究

李玉梅1,2,3(), 杨振京1(), 张 芸3, 杨庆华1, 刘林敬1, 毕志伟1, 王成敏1, 孔昭宸3, 赵 龙1,2   

  • 收稿日期:2013-11-12 修回日期:2014-06-19 出版日期:2014-12-10 发布日期:2014-12-10
  • 作者简介:

    作者简介:李玉梅(1987-),女,黑龙江哈尔滨人,硕士。专业方向为第四纪环境与构造地质学。E-mail:liyumei20090116@163.com

  • 基金资助:
    国家自然科学基金面上项目(41272386,41230101,40972212和40601104),国家重大科学研究计划项目(2014CB954201),中国地质科学院水文地质环境地质研究所基本科研业务费项目(SK07009、SK200806)、中国科学院植物研究所植被与环境变化国家重点实验室2011年青年人才项目(NO.2011QNRC07)以及教育部留学回国人员科研启动基金资助

Surface Pollen Assemblages and Vegetation Relationships in the Bortala River Basin of Xinjiang, China

Yu-mei LI1,2,3(), Zhen-jing YANG1(), Yun ZHANG3, Qing-hua YANG1, Lin-jing LIU1, Zhi-wei BI1, Cheng-min WANG1, Zhao-chen KONG3, Long ZHAO1,2   

  1. 1.The Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, Hebei 050803, China
    2.Shijiazhuang University of Economics, Shijiazhuang, Hebei 050031, China
    3.State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
  • Received:2013-11-12 Revised:2014-06-19 Online:2014-12-10 Published:2014-12-10

摘要:

博尔塔拉河流域位于中哈边境,其植被和土壤具有十分明显的垂直分布和区域性差异,根据该流域一条自西向东沿着海拔高度从210 m 到3 235 m 长约200多km的样带上所采集的人为干扰较少的49 个表土花粉样品的孢粉组合图式和现代植被样方调查资料,探讨了博尔塔拉河流域植被与表土花粉之间的关系。该区孢粉谱从上至下可划分为6个带,分别对应高山草甸带、亚高山草甸草原带、森林灌丛带、灌丛草原带、荒漠草原带、荒漠植被带。值得注意的是第6个孢粉带因含有具湿地特征的隐域性植被类型花粉组分,故又分成2个亚带,即荒漠植被亚带Ⅵ1和荒漠植被亚带Ⅵ2。森林灌丛植被带上限的云杉花粉含量明显比该带下限的含量高,表明云杉花粉的传播在沟谷地区受山谷风的影响较大。与此同时,将孢粉数据与气象数据相结合,分析结果得出比较有代表性的云杉属(Picea)、桦属(Betula)、藜科(Chenopodiaceae)、麻黄属(Ephedra)等花粉,与降水量和温度的关系较为密切。

关键词: 博尔塔拉河, 表土花粉, 孢粉组合带, 云杉, 新疆

Abstract:

:The Bortala River Basin is a distinct vertical gradient distribution area of vegetation and soil types at the arid region of the northwest China. According to the data of vegetation plots and pollen assemblages of 49 modern pollen samples,which were collected along an altitudinal gradient from 210 to 3 235 m belonging to the Bortala River Basin (Xinjiang, China), we analyzed the relationship between vegetation and surface pollen assemblages. The 49 surface samples were divided into six pollen zones (alpine meadow zone, subalpine meadow and steppe zone, forest-shrub zone, shrub steppe zone, desert steppe zone, desert vegetation zone) based on modern vegetation data and characteristics of the surface pollen spectra. Desert vegetation zone was separated into two subzones (desert vegetation subzone and desert with intrazonal vegetation subzone). The valley wind might help to improve the pollen transportation, but the percentages of Picea pollen in the upper limit of the forest-shrub zone were higher than those detected in the lower limit, suggesting that the upslope wind had a stronger impact on the transportation of Picea pollen than the downslope wind. Moreover, there was a good relationship between elevation, the climatic factors (temperature and precipitation) and the typical pollen taxa (Picea, Betula, Chenopodiaceae and Ephedra).

Key words: Bortala River, surface pollen, pollen assemblages, Picea, Xinjiang

中图分类号: 

  • 935.1