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南亚热带森林土壤种子库与地上植被的组成特征及其关系
引用本文:史军辉,黄忠良,欧阳学军,张池,李林,周小勇.南亚热带森林土壤种子库与地上植被的组成特征及其关系[J].北京林业大学学报,2006,28(4):22-27.
作者姓名:史军辉  黄忠良  欧阳学军  张池  李林  周小勇
作者单位:1.东北林业大学林木遗传育种黑龙江省重点实验室
基金项目:国家自然科学基金 , 中国科学院基金
摘    要:该文通过在鼎湖山自然保护区设立的固定植物样带,研究地上植物组成数量特征和土壤种子库的关系.结果表明:①该植物样带共有木本植物93种,其中,乔木60种,灌木33种;草本植物30种,其中,蕨类植物12种.② 植物样带土壤种子库出现木本植物36种,其中,乔木11种,灌木25种.土壤种子库木本植物种子数量平均183粒/msup]]2/sup]],其中,灌木平均数量为162粒/msup]]2/sup]],乔木平均数量为21粒/msup]]2/sup]],灌木在土壤种子库中的数量远远高于乔木;出现草本植物13种,其中蕨类植物3种,草本植物种子数量平均为215粒/msup]]2/sup]]③土壤种子库与地上优势种相关性比较:草本灌木 乔木.土壤中,草本植物种子数量以先锋种为主;乔木中,演替中间种的种子数量占优;灌木中,演替先锋种种子数量占优.④地上植被和土壤种子库之间的关系通过将森林群落植物划分为不同的生活型进行比较,灌木的Sorensen系数(0.54)草本(0.32)乔木(0.28).如果将地上植物按径级除去幼树,乔木的Sorensen系数为0.47从共有种百分比来看,乔木为91%,灌木为65%,草本植物为50%. 

关 键 词:群落组成    种子库    优势种    相似系数
文章编号:1000-1522(2006)04-0022-06
收稿时间:03 14 2005 12:00AM
修稿时间:2005-03-14

Composition of vegetation and soil seed bank in low subtropical forests and their relationship
SHI Jun-hui,HUANG Zhong-liang,OUYANG Xue-jun,ZHANG Chi,LI Lin,ZHOU Xiao-yong.Composition of vegetation and soil seed bank in low subtropical forests and their relationship[J].Journal of Beijing Forestry University,2006,28(4):22-27.
Authors:SHI Jun-hui  HUANG Zhong-liang  OUYANG Xue-jun  ZHANG Chi  LI Lin  ZHOU Xiao-yong
Institution:1. Dinghushan Mountain Nature Reserve, South China Botanical Garden, Chinese Academy of Sciences, Zhaoqing, Guangdong, 526070, P. R. China; 2. Graduate University of Chinese Academy of Sciences, Beijing, 100039, P. R. China; 3 .School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
Abstract:A permanent sample transect of plant communities was established on Dinghushan Mountain to study the relationship between the size of the vegetation composition above-ground and the soil seed bank. The results were as follows: 1) ninty-three woody species were present in the forests transect and of which 60 were trees and 33 shrubs; as well, 30 species of herbage appeared under the canopy and of which 12 were ferns; 2) thirty-six species of woody plants were found in the soil seed bank, including 11 tree species and 25 shrub species. The average woody seed density was 183 grains/m2; for shrubs the density was 162 grains/m2 and for trees 21 grains/m2. The number of seeds of shrubs was far more than that of trees. In addition, thirteen species of herbage were identified in soil seed bank samples including three species of fern and their average seed density was 215 grains/m2; 3) the pertinent comparison of species predominance between soil seed bank and above-ground vegetation was: herbage>shrub>tree. In the soil seed bank, most herbage seeds were pioneer species; seeds of middle succession species were dominant in trees and the seeds of pioneer species were dominant in shrubs; 4) to study the relationship between vegetation and soil seed bank, species in plant communities were divided into three groups by life forms. Result was that the Sorensen coefficient of shrub 0.54 > herbage 0.32 > tree 0.28. If we omit saplings according to DBH, the Sorensen coefficient for trees increases to 0.47. The following percentages of species were present both above ground and in the soil seed bank: tree 91%, shrub 65% and herbage 50%.
Keywords:community composition  seed bank  dominant species  Sorensen coefficient
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