哈泥泥炭沼泽典型土壤节肢动物群落结构的生境变异特征  

Habitat variations of typical soil arthropods community structure in Hani peatland

作　　者：林奕伶 孙新 刘冬[1] 戴冠华[3] 刘吉平[4] 武海涛[1] LIN Yiling;SUN Xin;LIU Dong;DAI Guanhua;LIU Jiping;WU Haitao(Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China;Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,Fujian,China;Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;College of Tourist and Geoscience,Jilin Normal University,Siping 136000,Jilin,China)

机构地区：[1]中国科学院东北地理与农业生态研究所,长春130102 [2]中国科学院城市环境研究所,福建厦门361021 [3]中国科学院沈阳应用生态研究所,沈阳110016 [4]吉林师范大学旅游与地理科学学院,吉林四平136000

出　　处：《生态学杂志》2023年第8期1869-1879,共11页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(U20A2083,41871099);吉林省科技发展计划项目(20210509037RQ)资助。

摘　　要：泥炭沼泽具有养分贫瘠、环境梯度复杂和微生境多样等特点。为探究环境梯度和微生境异质性对典型土壤节肢动物群落结构的影响,以长白山哈泥泥炭沼泽湿地为研究区,于2019年10月和2020年9月开展调查,共采集土壤跳虫和螨类71454只。在空间尺度上,沿泥炭沼泽湿地环境梯度,森林沼泽、灌丛沼泽和藓类沼泽中土壤跳虫和螨类的物种密度、类群数、优势种、特有种及多样性指数均发生明显变化;时间尺度上,哈泥泥炭沼泽生境中土壤节肢动物群落结构在采样的两年内年际变化较大,而藓丘微生境中土壤动物群落结构保持相对稳定。不同微生境相比,藓丘微生境中土壤节肢动物的密度、类群数及多样性指数均显著高于周边毛苔草群落,不同藓种形成的藓丘微生境间土壤节肢动物多样性无显著差异。筛选出14种土壤节肢动物指示物种,主要集中于藓丘微生境中。冗余分析表明,水位和藓类总有机碳含量是影响藓丘微生境内部土壤节肢动物群落的关键环境因子。Peatlands are characterized by low nutrient availability,high environmental gradient complexity,and high microhabitat variability.We investigated soil fauna in Hani peatlands of Changbai Mountain in October 2019 and September 2020 to explore the effects of environmental gradient and microhabitat heterogeneity on typical soil arthropods community structure.A total of 71454 soil springtails and mites were collected.At the spatial scale,there were substantial variations in density,richness,dominant species,endemic species,and diversity index of soil springtails and mites among different peatland habitats.At the temporal scale,community structure of soil arthropods varied greatly between 2019 and 2020,while the community structure of soil arthropods in the moss hummock microhabitats remained relatively stable.Among different microhabitats,soil arthropods density,species richness,and diversity index were significantly higher in moss hummock microhabitats than those in surrounding Carex miyabei community microhabitats.There was no significant difference in soil arthropod diversity among moss hummock microhabitats formed by different moss species.Fourteen indicator species of soil arthropods were recorded in moss hummock microhabitats.Results of redundancy analysis showed that water table depth and total organic carbon content of mosses were the key environmental factors influencing soil arthropods community in moss hummock microhabitats.

关 键 词：节肢动物 群落结构 生境 藓丘 泥炭沼泽 

分 类 号：S154.5[农业科学—土壤学]