欢迎访问《植物研究》杂志官方网站,今天是 分享到:

植物研究 ›› 2015, Vol. 35 ›› Issue (1): 16-21.doi: 10.7525/j.issn.1673-5102.2015.01.004

• 论文 • 上一篇    下一篇

千岛湖次生林不同演替阶段林分空间结构研究

    

  1. 浙江省林业科学研究院,杭州 310023
  • 出版日期:2015-01-15 发布日期:2015-03-11
  • 基金资助:
     

Stand Spatial Structure at Different Successional Stages of Secondary Forest in Qiandao Lake Region

    

  1. Zhejiang Forestry Academy,Hangzhou 310023
  • Online:2015-01-15 Published:2015-03-11
  • Supported by:
     

摘要: 为进一步揭示千岛湖次生林不同演替阶段林分的空间结构规律,根据马尾松不同密度设置了3个40 m×40 m的样地,进行了每木调查和坐标定位。利用混交度、大小比数和角尺度3种结构参数结合树种组成,对3个样地中的主要树种及林分整体的空间格局进行对比分析。结果表明:样地1中马尾松优势明显呈聚集分布,其它树种多为散生且生长被严重压制。样地2中的马尾松和青冈的优势较为明显,均呈聚集分布,而其它树种多为散生且生长被压制。样地3中苦槠优势明显呈聚集分布,林分整体混交程度较高,但苦槠的林木大小差异较小,林木生长大多处于中庸状态,缺少具有绝对优势的高大乔木。3个样地的林分整体均为聚集分布。以上结果说明,样地1和样地2均处于演替的初期,需要通过实施择伐经营,加速林分的演替。样地3已演替为以苦槠为优势种的常绿阔叶林,但发展为成熟的顶级群落尚需时间。

关键词: 千岛湖, 次生林, 演替阶段, 空间结构

Abstract: We set three plots of 40 m×40 m to study the stand spatial structure pattern at different successional stages of secondary forest with different densities of masson pine in Qiandao Lake, and took censusing of every individual and coordinate positioning. We compared and analyzed the main tree species and stand holistic spatial structure for three plots by using three structure parameters (mingling, neighborhood comparison, and uniform angle indexneighboring tree distribution pattern). The masson pine was the dominant species and presented an aggregating distribution at the No.1 plots, the rest tree species were basically scattered and the growth were seriously suppressed. Masson pine and blue Japanese oak were the dominant species and all presented an aggregating distribution at the No.2 plots, the other tree species were scattered and the growth were suppressed. Castanopsis sclerophylla significantly presented an aggregating distribution at the No.3 plots, the mingling of the whole stand was higher, the size differences of C.sclerophylla forest were small, the growth of forest was in the mean state, and the tall trees with absolute advantage lacked. The whole stand of three plots presented an aggregating distribution. The results suggested that the No.1 and No.2 plots were all in the initial stage of succession, and alternative cutting management was needed to accelerate the succession of stands. The No.3 plots had a succession with dominant C.sclerophylla evergreen broad-leaved forest, and it still would take time to be mature climax community.

Key words: Qiandao Lake, secondary forest, successional stage, stand&rsquo, s spatial structure pattern

中图分类号: