欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2002, Vol. ›› Issue (5): 529-532.

• 研究论文 • 上一篇    下一篇

人为干扰与喀斯特森林群落退化及评价研究

喻理飞1, 朱守谦1, 叶镜中2, 魏鲁明3, 陈正仁3   

  1. 1. 贵州大学林学系, 贵阳550025;
    2. 南京林业大学, 南京 210037;
    3. 茂兰国家级自然保护区管理处, 荔波 558400
  • 收稿日期:2000-07-12 修回日期:2000-12-19 出版日期:2002-05-15
  • 通讯作者: 喻理飞,男,1963年,博士,副教授,主要从事喀斯特森林生态、恢复生态和自然保护研究,发表论文20余篇.E-mail:yulifei@21cn.com
  • 基金资助:
    国家自然科学基金资助项目(39560021)

Evaluation on degradation of Karst forest community and human disturbance

YU Lifei1, ZHU Shouqian1, YE Jingzhong2, WEI Luming3, CHEN Zhengren 3   

  1. 1. Department of Forestry, Guizhou University, Guiyang 550025;
    2. Nanjing Forestry University, Nanjing 210037;
    3. Management Department of Maolan National Reserve, Libo 558400
  • Received:2000-07-12 Revised:2000-12-19 Online:2002-05-15

摘要: 导致贵州喀斯特森林发生退化的原因是火烧、开垦、放牧和樵采.选用群落高度、显著度、萌生株比例、生物量和耐荫树种比例5个指标对群落退化进行定量评价.结果表明,退化群落可分为A~F6个退化等级.在受自然力作用和人为干扰不明显时,顶极群落发生正常的波动(A).在干扰力的作用大于波动的振幅时,顶极群落发生明显退化(B~F),群落退化度逐渐增大.群落退化等级与退化群落自然恢复的演替阶段基本一致,生物量的移出和耐荫树种消退是退化的关键因素,火烧、放牧、开垦干扰群落主要分布于退化等级C~F中,樵采干扰群落多发生于B~C中.4种干扰对退化群落萌生株数影响较大,受火烧、樵采干扰群落多,而受开垦、放牧干扰群落较少.各干扰群落退化度从小至大排序为樵采干扰群落、开垦干扰群落、放牧干扰群落、火烧干扰群落.

Abstract: Fire,reclamation,herd,and cut led to degradation of Karst forest in Guizhou Province.Five indexes as height,dominance,percentage of asexual individual,biomass,and percentage of shade tolerant for evaluating community degradation were selected.Degraded communities were divided into six degraded grades (A~F).Community structure and function fluctuated normally in climax (A) under nature force or light human disturbance.While effect of disturbance was preponderated over the range of community fluctuation,climax community degraded evidently,and degraded degree of communities increased gradually.Degraded grades of communities were consistent to succession stages of degraded community.In degraded process,the key factor was decrease of biomass and shade tolerant species.Degraded communities due to fire,herd,and reclamation were distributed in grades C~F,and degraded community due to cut was in grades B~C. Amount of asexual individual was influenced by disturbance type,and the amount in degraded communities due to fire and cut was more than that due to reclamation and herd.Degraded degree of different disturbed community was in order of cut community<cleared community<herded community<fired community.

中图分类号: