摘要
为明确衡阳岣嵝峰藤本对林下物种多样性的影响,探究林下植物的种间关系和共存机制,采用样方法对林下藤本与非藤本的Shannon-Wiener指数及密度进行调查,同时测定样方中土壤温、湿度。结果表明,该地区林下总物种及非藤本植物的Shannon-Wiener指数随着藤本密度的增加而显著下降,林下非藤本植物的Shannon-Wiener指数与密度均受物种总密度、距离最近乔木的胸径和土壤温度的综合影响。藤本较强的扩散和生存能力对林下非藤本的Shannon-Wiener指数产生显著抑制效应,同时显著降低个体数量。
To clarify the effects of the liana on the bio-diversity of understory forest in Goulou Feng of Hengyang,and explore the interspecific relationship and coexistence mechanism of understory forest,we investigated the Shannon-Wiener index and density of the liana and the non-liana by field plot survey,and also measured the soil temperature and moisture in sample plots.The results showed that the Shannon-Wiener index for both total species and non-liana significantly decreased with the elevated liana density,and the Shannon-Wiener index and density of the non-liana understory forest were totally influenced by plant density,DBH(diameter at breast height,DBH)of the tree closest to the plots and soil temperature.All the results showed that the stronger dispersive and survival capacity of the liana exhibited significant negative effects on the Shannon-Wiener index of non-liana and reduced the density of non-liana species.
作者
黄桂元
HUANG Gui-yuan(Hengdong County Forestry Bureau of Hunan,Hengdong,Hunan 421400)
出处
《安徽农业科学》
CAS
2021年第7期103-105,共3页
Journal of Anhui Agricultural Sciences
基金
湖南省林业科技创新计划项目“湖南省衡阳市紫色土丘陵坡地植被恢复研究与示范”(XLK201341)。
作者简介
黄桂元(1974-),男,湖南衡东人,工程师,从事林业资源调查与研究工作。
