亚热带植物科学2023，Vol.52Issue(5)：433-447,15.DOI:10.3969/j.issn.1009-7791.2023.05.009
城市森林群落林下草本植物多样性及其环境响应——以贵阳市为例
Diversity of Understory Herbaceous Plants in Urban Forest Communities and Their Environmental Responses—the Case of Guiyang City
摘要
Abstract
Understory herbaceous plants are an important component of forest communities,and are important for maintaining the function and diversity of forest ecosystems.This study analyzed the relationship between the composition and diversity of herbaceous plants and environmental factors based on the data from 1320 understory samples(1 m×1 m)from 44 typical forest community sample plots in Guiyang City.The results showed that(1)there were 257 species of understory herbaceous plants in the study area,belonging to 186 genera in 67 families,including 226 species of seed plants,with perennial herbs as the dominant taxa(69%).Asteraceae,Gramineae,Liliaceae and Labiatae dominated.(2)A total of eight environmental factors explained 20.2%of the variation in the composition of understory herbaceous plants in Guiyang City,and stand type and elevation were the main environmental factors affecting species composition and distribution.(3)The diversity of understory herbaceous plants in different stand types was,in descending order,mixed coniferous-broadleaf forests,mixed broadleaf forests,broadleaf-only forests,mixed coniferous forests,and coniferous-only forests.The Margalef index was significantly correlated with stand type and slope direction.The Shannon-Wiener index was significantly correlated with stand type,apomictic thickness,slope direction,and slope elevation.And the Simpson index,Pielou index were significantly correlated with stand type,apoplastic thickness,and slope position.(4)Multiple regression equations showed that Margalef index was mainly affected by stand type and slope direction,Shannon-Wiener index was mainly affected by stand type,Simpson index was mainly affected by stand type and slope position,and Pielou index was mainly affected by apomictic thickness,slope position and elevation.Therefore,the joint effect of stand type,apoplastic thickness,slope direction,slope position and elevation could better explain the variation of understory herbaceous plant species diversity in the study area.关键词
林下草本植物/物种多样性/环境因子/相关性分析/多元逐步回归分析Key words
understory herbaceous plants/species diversity/environmental factors/correlation analysis/multiple stepwise regression analysis分类
农业科技引用本文复制引用
蔡洪丽,欧静..城市森林群落林下草本植物多样性及其环境响应——以贵阳市为例[J].亚热带植物科学,2023,52(5):433-447,15.基金项目
贵州省林业科研项目(黔林科合[2023]09) （黔林科合[2023]09）
