文献类型：期刊文献

中文题名：退化次生林恢复过程中群落结构和生态位动态

英文题名：Dynamic changes of plant community structure and population niche in the recovery process of degenerated secondary forests

作者：刘宪钊[1] 陆元昌[1] 周燕华[2]

第一作者：刘宪钊

机构：[1]中国林业科学研究院资源信息研究所;[2]海南省林业局

年份：2010

期号：1

起止页码：22-28

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(30671679);国家"十一五"科技支撑资助项目(2006BAD03A0403)

语种：中文

中文关键词：次生演替;生态位宽度;相关性;生态稳定种;保护性经营

外文关键词：secondary succession; niche width; correlation; ecological stability species; protective management.;

分类号：X171.1

摘要：在海南白沙县南开乡按人为干扰程度的不同依次选取次生演替中植被恢复初期、早期、近中期和后期4个典型群落,分别对群落结构、树种组成、重要值和生态位宽度等指标进行研究。结果表明:中前期次生演替过程中优势种作用明显,具有最大的生态位宽度;随着次生演替的进行,种群生态位宽度趋于均衡,群落表现出物种丰富度和多样性增加、林分结构复杂化、树种的优势作用弱化等正向演替的趋势;此外,该地区由于经营史的特殊性,中前期次生群落保留了很多原始林的痕迹,出现了一些本应在原始林内出现的生态稳定种,这些物种在中前期次生群落中数量少,生态位宽度小,却表现出强大的生活力;在演替中前期次生林的经营中,最大程度地发挥优势树种的作用、增加林内生态稳定种的数量是该地区次生林恢复经营的重要技术方向。
Four secondary forests at initial, early, near-middle, and late recovery stages under anthropogenic disturbance in Nankai Township of Baisha County, Hainan Province were selected to study their community structure, tree species composition, importance value index, and niche width. At the early and middle stages of recovery, the dominant species with the largest niche width played obvious roles. With the process of recovery, the niche widths of different species populations in the communities became stable, the community diversity and species richness increased, the stand structure became complicated, and the influence of dominant species was weakened. In addition, due to the forest management history, the forest community at early and middle recovery stages included some special tree species which should present themselves in natural forest, and these species were called as ＂ecological stability species＂, because they usually had small number of trees and occupied a small niche width, but had strong competing viability. In the management of secondary forests at early and middle stages of recovery, to maximize the roles of dominant species and to promote the individual numbers of ecological stability species would be essential for the restoration management of secondary forests.