生态学杂志2012，Vol.31Issue(8)：1917-1923,7.
秦岭山地天然油松群落主要植物种群生态位特征
Niche characteristics of main plant populations in natural Pinus tabulaeformis communities in Qinling Mountains, Northwest China
摘要
Abstract
By using Levins and Hurlbert formulae of niche breadth and Pianka formula of niche overlap, this paper analyzed the niche characteristics of 20 trees and 26 shrub populations in natural Pinus tabulaeformis communities in Qinling Mountains. In canopy layer, P. tabulaeformis, Quercus aliena var. acutiserrata, P. armandii, and Toxicodendron vernicifluum were the dominant populations; in shrub layer, the dominant populations were Corylus heterophylla, Euonymus alatus, Lonicera japonica, and Viburnum dilatatum. The dominant populations in canopy layer had the largest niche breadth, and were the main body of the communities; while the V. dilatatum , Elaeagnus pungens, E. alatus, and C. heterophylla in shrub layer had a larger niche breadth than the other populations. In canopy layer, there was a lower niche overlap between the dominant populations, but the Populus purdomii-Dendrobenthamia anguwstata, Rhus chinensis-Populus davidiana, and Populus simonii-Betula platyphylla had a higher niche overlap. In shrub layer, more dominant populations appeared niche overlap, and E. alatus-E. schensianus, Spiraea salicifolia-Lonicera japonica, Cotinus coggygria var. glaucophylla-Smilax scobinicaulis , and Rhododendron lapponicum-Salix cathayana showed a larger niche overlap. The dominant populations in the communities had a larger niche breadth and a higher niche overlap with other populations, but no positive correlation was observed between the niche breadth and niche overlap.关键词
天然油松群落/种群/生态位宽度/生态位重叠/秦岭山地Key words
natural Pinus tabulaeformis community/ population/ niche breadth/ niche overlap/ Qinling Mountains.分类
农业科技引用本文复制引用
柴宗政,王得祥,张丽楠,张洋,黄青平,吴昊..秦岭山地天然油松群落主要植物种群生态位特征[J].生态学杂志,2012,31(8):1917-1923,7.基金项目
国家自然科学基金项目(31070570)和林业公益性行业科研专项经费(20100400206)资助 （31070570）
