生态学杂志2013，Vol.32Issue(7)：1756-1761,6.
山西稀有濒危植物脱皮榆种内和种间竞争
Intra-and inter-specific competition of rare and endangered plant Ulmus lamellosa in Shanxi Province of China
摘要
Abstract
Based on the field investigation data of 128 Ulmus lamellosa target trees and 1093 competing species individuals in a 100 m× 100 m sampling plot in Taiyue Mountain of Shanxi,this paper analyzed the intra-and inter-specific competition intensities of U.lamellosa by using Hegyi' s competition index (CI).The intraspecific competition intensity of U.lamellosa decreased gradually with its increasing DBH.In the plot,there were many other species,but their individual number was fewer than that of U.lamellose,and thus,the interspecific competition intensity of U.lamellosa was relatively weaker than its intraspecific competition.The order of the intra-and inter-specific competition intensities was U.lamellosa-U.lamellosa ＞ Carpinus cordata-U.lamellosa ＞ Acer elegantulum-U.lamellosa ＞ other species-U.lamellosa.The relationships between the competition intensity and the DBH of U.lamellosa followed the equation CI=AD-B.When the DBH of U.lamellosa reached 25 cm,the competition intensity had less change,and the model could well simulate and predict the intra-and inter-specific competition intensities of U.lamellosa.关键词
脱皮榆/种内竞争/种间竞争/竞争指数Key words
Ulmus lamellosa/intraspecific competition/interspecific competition/competition index分类
农业科技引用本文复制引用
王晓霞,张钦弟,毕润成,白玉芳..山西稀有濒危植物脱皮榆种内和种间竞争[J].生态学杂志,2013,32(7):1756-1761,6.基金项目
山西省化学优势重点学科建设项目(912019)、山西省青年科技研究基金项目(2013021030-3)、山西师范大学校科学研究基金项目(ZR1218)和山西师范大学生命学院科学研究基金项目(SMYKZ-19)资助. （912019）
