Xihu,Dunhuang, fire disturbance, vegetation characteristics, iInland desert wetland ecological system ,"/> 火干扰对内陆荒漠湿地芦苇群落特征的影响
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干旱区地理 ›› 2020, Vol. 43 ›› Issue (3): 770-776.doi: 10.12118/j.issn.1000-6060.2020.03.23

• 生物与土壤 • 上一篇    下一篇

火干扰对内陆荒漠湿地芦苇群落特征的影响

王娟1，陈文业2,3,4，谈嫣蓉2,3,4，王多锋2，袁海峰4,5，陈旭4,5，吴婷4,5，王斌杰2,3,4，邴丹珲2,3,4，刘鸿源2,3,4，刘冬皓2,3,4   

  1. 1 中农威特生物科技股份有限公司，甘肃 兰州 730046；

    2 甘肃省林业科学研究院，甘肃 兰州 730020；

    3 甘肃林研科技工程公司，甘肃 兰州 730020； 

    4 甘肃敦煌西湖湿地生态系统国家定位观测研究站，甘肃 敦煌 736200； 5 甘肃敦煌西湖国家级自然保护区管理局，甘肃 敦煌 736200

  • 收稿日期:2019-05-22 修回日期:2019-08-26 出版日期:2020-05-25 发布日期:2020-05-25
  • 通讯作者: 王多锋（1970-），男，甘肃民勤人，高级工程师，主要从事林学研
  • 作者简介:王娟（1978-），女，甘肃白银人，工程师，主要从事生态恢复研究.E-mail:gschwy@163.com
  • 基金资助:
    甘肃省科技重大专项计划项目(1302FKDA035);甘肃省科技支撑计划-社会发展类项目(1011FKCA136)资助

Effect of fire disturbance on reed（Phragmites australis Trin）community characteristics in inland desert wetland

WANG Juan1，CHEN Wen-ye2,3,4，TAN Yan-rong2,3,4，WANG Duo-feng2，YUAN Hai-feng4,5，CHEN Xu4,5， WU Ting4,5，WANG Bin-jie2,3,4，BING Dan-hui2,3,4，LIU Hong-yuan2,3,4，LIU Dong-hao2,3,4   

  1. 1 China Agricultural Vet.Bio.Science and Technology co.LTD，Lanzhou 730046，Gansu,China；

    2 Gansu Forestry Science and Technology Research Academy，Lanzhou 730020，Gansu,China；

    3 Gansu Forest Science and Technology Engineering Company，Lanzhou 730020，Gansu,China；  4 National Positioning Observation Station of Xihu Wetland Ecosystem in Dunhuang of Gansu，Dunhuang 736200，Gansu,China 5 Administrative Bureau of Gansu Dunhuang Xihu National Nature Reserve，Dunhuang 736200，Gansu,China

  • Received:2019-05-22 Revised:2019-08-26 Online:2020-05-25 Published:2020-05-25

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摘要： 采用人为起火的方法，通过对比敦煌西湖荒漠湿地干扰区域和未干扰区域火后第一年芦苇群落特征的变化，探讨内陆荒漠湿地植被对火干扰的响应机制。了解火干扰对内陆荒漠湿地芦苇群落特征的影响。结果表明: 火干扰能够延长植物青绿期，促进了植被的个体发育；火干扰对草本层植被盖度、高度均有显著的负面影响，而对密度有显著的正面影响，对灌木层植被群落盖度、高度及密度均有正面影响，但影响不明显；火干扰后植物群落Shannon-Wiener多样性指数H′、Simpson多样性指数D和Simpson优势度指数C均减少，而Margalef物种丰富度指数Ma和Pielou均匀度指数J均增加；火干扰致使草本层植物群落多样性指数与研究区植物群落总体多样性指数变化趋势一致，致使灌木层物种H′、D和J指数均减少，而Ma和C指数均增加；火干扰致使植物群落地上总的生物量降低，主要使灌木层生物量降低，而使草本层生物量有所增加。

关键词: 敦煌西湖, 火干扰, 群落特征, 内陆荒漠湿地生态系统

Abstract: This study discussed the response mechanism of vegetation to fire disturbance in inland desert wetlands by comparing the effect of fire disturbance on the characteristics of reed communities in the Xihu wetland, Dunhuang City,Gansu Province,China.Results revealed that fire disturbance could prolong the green period of plants and promote the individual development of vegetation.Fire disturbance had a significant negative effect on vegetation coverage and height and a significant positive effect on the density of the herbaceous layer.Furthermore,fire disturbance positively affected the coverage,height,and density of the shrub community;however,this effect is not obvious.After the fire disturbance,the ShannonWiener H′,Simpson D,and Simpson C indices of plant communities decreased,whereas the Margalef Ma and Pielou J indices increased.Moreover,the same change trends in plant community diversity indices such as H′,D,and J diversities appeared in the herbaceous layer of the reed community in the study area,whereas an opposite trend in Ma and C indices was observed.In summary,fire disturbance can reduce the total aboveground biomass of plant communities,particularly the biomass of the shrub layer,and it can increase the biomass of the herbaceous layer.

Key words: Xihu,Dunhuang')">

Xihu,Dunhuang, fire disturbance, vegetation characteristics, iInland desert wetland ecological system