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中国沙漠 ›› 2016, Vol. 36 ›› Issue (5): 1348-1356.DOI: 10.7522/j.issn.1000-694X.2014.00189

• 生物与土壤 • 上一篇    下一篇

巴丹吉林沙漠边缘地区植被特征

刘铮瑶1, 董治宝1,2, 王建博1, 崔徐甲1, 张玉1, 焦原磊1, 罗万银2, 逯军峰2, 杨林海2, 李继彦2, 王蒙2   

  1. 1. 陕西师范大学 旅游与环境学院, 陕西 西安 710062;
    2. 中国科学院寒区旱区环境与工程研究所 沙漠与沙漠化重点实验室, 甘肃 兰州 730000
  • 收稿日期:2014-09-28 修回日期:2014-12-05 出版日期:2016-09-20 发布日期:2016-09-20
  • 作者简介:刘铮瑶(1990-),女,陕西西安人,博士研究生,主要从事风沙地貌研究。E-mail:liuzhengyaolzy@163.com
  • 基金资助:
    国家“十二五”计划科技项目(2012BAD16B0303);中央高校基本科研业务费专项资金项目(GK201502060)

Vegetation Characteristics in the Marginal Areas of the Badain Jaran Desert

Liu Zhengyao1, Dong Zhibao1,2, Wang Jianbo1, Cui Xujia1, Zhang Yu1, Jiao Yuanlei1, Luo Wanyin2, Lu Junfeng2, Yang Linhai2, Li Jiyan2, Wang Meng2   

  1. 1. College of Tourism & Environment Sciences, Shaanxi Normal University, Xi'an 710062, China;
    2. Key Laboratory of Desert and Desertification, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2014-09-28 Revised:2014-12-05 Online:2016-09-20 Published:2016-09-20

摘要: 通过在巴丹吉林沙漠野外植被调查,描述了植被的生活型和群落的空间分布特征,分析了植被多样性、优势度及均匀度指数,并探讨了历年来气候变化对植被分布的影响。结果表明:(1)巴丹吉林沙漠植物种类较少,可分为小乔木、灌木、小灌木、半灌木、多年生草本和一年生草本6类生活型。其中灌木种类最为丰富,小乔木最少。(2)巴丹吉林沙漠东南一带物种丰富度和多样性高于西北一带,南缘地区植被群落分布及植被群落多样性亦均高于北缘地区。(3)近53 a巴丹吉林沙漠气温发生显著变化,蒸发量增加。南缘地区增温而降水减少。这种变化对于以水分为主导因子的沙漠地区植被发育来说极为不利,有加剧沙漠南缘荒漠化的威胁。

关键词: 植被, 生物多样性, 气候变化, 巴丹吉林沙漠

Abstract: The article is based on the vegetation investigation in Badain Jaran Desert. It described various life forms of vegetation and the spatial distribution of community, then analyzed the index of vegetative diversity, dominance and evenness. We also discussed the impact of climate changes on vegetation distribution over the years. The results showed that:(1) The plant species in Badain Jaran Desert were lacking. It can be divided into 6 life forms:small trees, shrubs, small shrubs, subshrubs, perennial herbs and annual herbs. Among them, shrubs had the most abundant species, and small trees had the least. (2) Species richness and diversity in southeast area were higher than the northwest area of the Badain Jaran Desert. The distribution and diversity of vegetation communities in the southern margin were also higher than the northern margin. (3) In recent 53 years, the temperature of Badain Jaran Desert has changed dramatically, and the evaporation of water increased. Temperature increased and precipitation decreased in southern margin. The changes in desert where water is the dominant factor of the vegetation development is extremely disadvantageous. It's likely to intensify the threat of southern margin desertification.

Key words: vegetation, biological diversity, climatic change, Badain Jaran Desert

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