涂山森林群落草本层植物物种多样性和生物量空间格局  

Spatial patterns of species diversity and biomass in herbaceous layer of forest community in Tushan

作　　者：吴红宝 赵建荣 高壮壮 虞俊松 陈亚 杨石 杨天傲 WU Hongbao;ZHAO Jianrong;GAO Zhuangzhuang;YU Junsong;CHEN Ya;YANG Shi;YANG Tianao(College of Resource and Environment,Anhui Science and Technology University,Fengyang 233100,China)

机构地区：[1]安徽科技学院资源与环境学院,安徽凤阳233100

出　　处：《安徽科技学院学报》2024年第4期44-52,共9页Journal of Anhui Science and Technology University

基　　金：国家自然科学基金(42305127);安徽省高校自然科学研究项目(2023AH051854,2022AH051619);安徽省大学生创新创业训练计划项目(S202210879124,S202310879295)。

摘　　要：目的:探讨涂山风景区森林群落草本层植物物种多样性和地上生物量在海拔梯度上的空间变化规律。方法:以淮河流域涂山风景区森林群落草本层植物为研究对象,2021年9月采用样方调查法对其植物高度、盖度及地上生物量沿海拔梯度变化进行野外调查和统计分析。结果:不同海拔梯度间植物物种及组成类群差异明显,中等海拔梯度物种数显著低于低海拔和高海拔梯度(P<0.05),但中等海拔梯度优势种物种重要值比例最高,为94.0%;中等海拔梯度植物Shannon-Wiener指数、Simpson指数和物种丰富度指数显著低于高、低海拔区域(P<0.05),而其地上生物量则显著高于低海拔区域(P<0.05);总体上物种多样性沿海拔梯度呈“U”型分布格局,而地上生物量则呈单峰分布格局;除Pielou指数外,地上生物量与物种多样性在海拔上呈显著负相关(P<0.05),与植物高度和盖度呈显著正相关(P<0.05)。结论:研究结果初步揭示了淮河流域涂山风景区不同海拔梯度森林群落草本层植物物种多样性及其生物量的垂直分布差异,对认识研究区森林生态系统植被群落生物多样性分异规律及揭示森林生态系统植物资源现状具有重要的科学意义。Objective:To explore the spatial wariation of species dirersity and biomass in herbaceous layer of forest community at altitude gradient in Tushan.Methods:A field survey of herbaceous layer of forest community was conducted in Tushan Mountain in September 2021,the variation of plant height,cover age and aboveground biomass along the elevation gradient were investigated the impact of elevation gradient on species diversity and above-ground biomass and reveal their relationship with herbaceous layer of forest communities were discouered by exploring the quadrat method.Results:Remarkable differences existed among species composition of various elevation gradient,and the species richness in the medium elevation gradient was significantly lower than that in elevation gradient of low and high(P<0.05),while the proportion of importance value of dominant species in middle altitude gradient was the highest(94.0%).Furthermore,the indexes of Shannon-Wiener,Simpson and species richness in the medium elevation gradient were significantly lower than that in other elevation gradients(P<0.05),while the above-ground biomass was significantly higher than that in low elevation(P<0.05).In general,species diversity was presented a U-shaped distribution pattern with the increase of elevation,but above-ground biomass exhibited a unimodal distribution pattern.Additionally,apart from Pielou index,negative relationship significantly existed between the above-ground biomass and species diversity at elevation gradient(P<0.05),and positive relationship significantly existed between the above-ground biomass and height and coverage(P<0.05).Conclusion:The results preliminary revealed that significant difference of vertical distribution of species diversity and above-biomass in herbaceous layer of forest community in Tushan Mountain was affected by elevation gradient,which had a great scientific significance to understand the biodiversity of forest ecosystem vegetation community and revealed the present situation of forest ecosystem plant resour

关 键 词：物种多样性 生物量 草本层 海拔 涂山 

分 类 号：S852.3[农业科学—基础兽医学]