欢迎访问《中国农学通报》,

中国农学通报 ›› 2019, Vol. 35 ›› Issue (21): 66-69.doi: 10.11924/j.issn.1000-6850.casb18120076

• 林学 园艺 园林 • 上一篇    下一篇

湖南舜皇山不同海拔森林线附近群落结构与物种多样性

张晓文   

  1. 湖南省祁阳县大江林场
  • 收稿日期:2018-12-19 修回日期:2019-07-04 接受日期:2019-05-21 出版日期:2019-08-13 发布日期:2019-08-13
  • 通讯作者: 张晓文
  • 基金资助:
    国家“十五”农业科技重大专项(2001BA507A), 湖南省林业科技创新计划项目(XLK201341).

Community Structure and Species Diversity near the Forestline of Different Altitudes in Shunhuang Mountain, Hunan

  • Received:2018-12-19 Revised:2019-07-04 Accepted:2019-05-21 Online:2019-08-13 Published:2019-08-13

摘要: 为了研究湖南舜皇山不同海拔森林线附近群落结构与物种多样性,在舜皇山东南坡海拔683~1883 m每隔300 m设立5个森林线,在森林线样方调查基础上,分析森林线附近的物种组成、群落结构特征和群落的多样性指数。结果表明:(1)在森林线5个海拔的样地中共有种子植物28种,分属17科19属;(2)群落结构总体上呈现出增长的趋势;(3)随海拔高度的增加,Shannon指数、Alatalo指数呈现出“n”形变化规律,Simpson指数呈现出“U”形变化规律, Cody指数显著降低(P<0.05),海拔(1583~1883 m)的Jaccard指数显著高于海拔(683~1283 m)的Jaccard指数(P<0.05)。

关键词: 铺地黍, 铺地黍, 水分条件, 重金属胁迫, 生长特性

Abstract: The paper aims to study the community structure and species diversity of near the forestline of different altitudes in Shunhuang mountain, Hunan. The author established 5 forestlines, every 300 m, from altitude of 683- 1883 m, and on the basis of sampling investigation, analyzed the species composition, community structure properties and diversity index near the forestline. The results showed that: (1) there were 28 species of plants belonging to 17 families and 19 genera in 5 altitude sampling plots near the forestline; (2) in general, community structure had an increasing trend; (3) with the increase of the altitude, Shannon index, Alatalo index had the“n”curve regulation, Simpson index had the“U”curve regulation and Cody index significantly decreased (P<0.05); Jaccard index of altitude from 1583 m to 1883 m was significantly higher than that of altitude from 683 m to 1283 m (P<0.05).

中图分类号: