汶川草坡乡地震次生灾害迹地植物群落的恢复研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
在野外样方调查的基础上,对汶川县草坡乡崩塌、滑坡、泥石流3种次生灾害迹地和2个对照群落人工恢复群落和未受地震破坏的原始群落上的植物群落种类组成、结构特征、优势度及物种多样性进行了研究,结果表明:①次生灾害迹地恢复群落上共有高等植物11科17属19种,群落结构简单,以菊科等先锋草本植物为主;②3种次生灾害迹地上物种多样性较低,Margalef丰富度指数、Simpson指数、Shannon-wiener多样性指数均显著低于对照,但Pielou均匀度指数与对照差异不显著.研究表明3种次生灾害迹地均处于演替阶段的早期,生存条件的缺失是地震后群落恢复较慢的主要原因.
Based on the results of a field survey made with the quadrat method,the composition and structural characteristics,dominant degree and biodiversity of three plant communities developed from the body of collapse,landslide and debris flow in Caopo township in Wenchuan were studied and compared with two control communities,i.e.an artificial restoration community and an intact primitive community.A total of 19 plant species of higher plants,belonging to 11 families 17 genera,were recorded in the three earthquake-affected communities,of which the pioneer plants such as composite plants were the main species.The species diversity of the 3 communities,as indicated by Margalef species richness index,Simpson diversity index and Shannon-Wiener diversity index,was lower than that of the control communities,while its Pielou evenness index had no remarkable difference compared with the control communities.The above results indicated that the secondary disaster mark places were in their early succession and the loss of good habitats was the main reason for their retarded restoration.
引文
[1]崔鹏,韦方强,陈晓清,等.汶川地震次生山地灾害及其减灾对策[J].科技赈灾,2008,23(4):317-323.
    [2]包维楷.汶川地震重灾区生态退化及其恢复重建对策[J].中国科学院院刊,2008,23(4):324-329.
    [3]赵芹,罗茂盛,曹叔尤,等.汶川地震四川灾区水土流失经济损失评估及恢复对策[J].四川大学学报:工程科学版,2009,41(3):289-293.
    [4]欧阳志云,徐卫华,王学志,等.汶川大地震对生态系统的影响[J].生态学报,2008,28(12):5801-5809.
    [5]徐卫华,欧阳志云,王学志,等.汶川地震重灾区生态保护重要性评价与对策[J].生态学报,2008,8(12):5820-5825.
    [6]王根龙,张军慧,刘红帅.汶川地震北川县城地质灾害调查与初步分析[J].中国地质灾害与防治学报,2009,20(3):47-51.
    [7]徐新良,江东,庄大方,等.汶川地震灾害核心区生态环境影响评估[J].生态学报,2008,28(12):5899-5908.
    [8]吴鹏飞,刘世荣.汶川地震次生灾害对土壤动物群落的影响[J].林业科学,2010,45(9):115-122.
    [9]刘守江,张斌,杨清伟,等.汶川地震非规范滑坡体上植被的自然恢复能力研究——以彭州银厂沟谢家店子滑坡体为例[J].山地学报,2010,28(3):373-378.
    [10]高贤明,黄建辉,万师强,等.秦岭太白山弃耕地植物群落演替的生态学研究[J].生态学报,1997,17(6):619-625.
    [11]朱桂林,山仑,刘国彬.黄土高原农牧交错带植被恢复途径[J].中国水利,2004(8):30-32.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心