生态环境学报2024，Vol.33Issue(4)：499-508,10.DOI:10.16258/j.cnki.1674-5906.2024.04.001
西藏热振国家森林公园土壤原生动物群落沿海拔分布格局及其与环境因子的关联特征
Distribution Pattern of Soil Protozoa Community along Altitude and Its Correlation with Environmental Factors in Rating National Forest Park in Tibet,China
摘要
Abstract
Soil protozoa,a kind of micro-single-celled eukaryotes in soil,are the key components of soil and play an important role in indicating the dynamic change of soil environmental quality.To understand the community composition,diversity and distribution pattern of soil protozoa at different elevations and their coupling relationship with environmental factors,a total of 9 plots at three different altitudes(low:LA,middle:MA,High:HA)were set up in July 2021 according to the geographical characteristics of Tibet Rezhen National Forest Park.The"non-submerged culture method","in vivo observation method"and"Wilbert protein silver method"were used to culture and morphologically identify soil protozoa.The results showed that a total of 76 species of soil protozoa were identified at three different altitudes in the study area,belonging to 2 phyla,12 classes,23 orders,32 families and 46 genera.The dominant class was Zoomastigophorea,accounting for 22.37％of the total species.Among them,Dynaminidae prevailed at low altitudes,whereas Colpodea dominated at middle and low altitudes,which is related to the R-strategy growth pattern of Colpodea.There was no significant difference in the Shannon-Wiener diversity index,Pielou evenness index and Margalef abundance index among the three altitudes.There were differences in soil pH and water content between low and high altitudes.Co-occurrence network analysis showed that the relationship between the co-occurrence network nodes of the three soil protozoan species at different altitudes was mainly positive.The results of Mental analysis and redundancy analysis showed that total phosphorus was the main driving factor affecting the composition of soil protozoa community.The results of this study are helpful to understand the ecosystem changes of Rezhen National Forest Park in Tibet,and provide basic data support for ecological environment protection and sustainable development of the Qinghai-Tibet Plateau.关键词
热振国家森林公园/土壤原生动物/群落多样性/共现网络/分布格局/环境因子Key words
Rezhen National Forest Park/soil protozoa/community diversity/co-occurrence network/distribution pattern/environmental factors分类
农业科技引用本文复制引用
黄倩,朱时应,李天顺,李明燕,索南措,普布..西藏热振国家森林公园土壤原生动物群落沿海拔分布格局及其与环境因子的关联特征[J].生态环境学报,2024,33(4):499-508,10.基金项目
西藏地区柏科物种响应气候变化的遗传多样性和地理分布格局变迁研究(U20A2080) （U20A2080）
