[Niche of the mosses on floor in Shanghai City].
The mosses on the floor of 22 sites at 20 main parks and 2 chemical plants in Shanghai were sampled, and 75 moss species were recorded. Their niche breadths were calculated by Levins equation. The results indicated that most moss species had rather narrow niche breadth, 68% of them with a niche breadth less than 0.1. The relationship between species number (N) and their niche breadth (B) followed the model N = 0.344 x e(-0.0377B), R = 0.9684. The niche overlaps of 39 main moss species (important value > 0.1) were calculated by Wang's equation. Based on their niche overlaps, the ordination plot of Principal Axes Analysis (PAA) and the Minimal Spanning Tree (MST) were drawn. The results showed that five ecological groups of the 39 moss species related to different habitats could be identified.
Chen
Yi
Y
College of Life and Environment Science, Shanghai Normal University, China. cheny1026@163.com
Cao
Tong
T
Song
Guoyuan
G
Yu
Jing
J
D044002:Bryophyta / Q000145:classification / Q000254:growth & development*; D002681:China; D004463:Ecology; D017753:Ecosystem