Climate and salinity drive soil bacterial richness and diversity in sandy grasslands in China

作     者：ChengChen Pan XiaoYa Yu Qi Feng YuLin Li ShiLong Ren ChengChen Pan;XiaoYa Yu;Qi Feng;YuLin Li;ShiLong Ren

作者机构：Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China School of Tourism and Resource EnvironmentQiannan Normal University for NationalitiesDuyunGuizhou 558000China Environmental Research InstituteShandong UniversityQingdaoShandong 266237China 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2022年第14卷第3期

页      面：182-195页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：study was funded by the National Natural Science Foundation of China(41773086,42042024,31400392,31670477) the Science and Technology Program of Gansu Province,China(18JR2RA026) 

主　　题：sandy land soil bacterial diversity biogeography climate change salinity 

摘      要：Bacteria constitute a large proportion of the biodiversity in soils and control many important processes in terrestrial ***,our understanding of the interactions between soil bacteria and environmental factors remains limited,especially in sensitive and fragile *** this study,geographic patterns of bacterial diversity across four sandy grasslands along a 1,600 km north-south transect in northern China were characterized by high-throughput 16S rRNA gene ***,we analyzed the driving factors behind the patterns in bacterial *** results show that of the 21 phyla detected,the most abundant were Proteobacteria,Actinobacteria,Acidobacteria and Fir‐micutes(average relative abundance5%).Soil bacterial operational taxonomic unit(OTU)numbers(richness)and Faith s phylogenetic diversity(diversity)were highest in the Otindag Sandy Land and lowest in the Mu Us Sandy *** electrical conductivity(EC)was the most influential factor driving bacterial richness and *** bacterial communities differed significantly among the four sandy grasslands,and the bacterial community structure was signifi‐cantly affected by environmental factors and geographic *** the environmental variables examined,climatic factors(mean annual temperature and precipitation)and edaphic properties(pH and EC)explained the highest propor‐tion of the variation in bacterial community *** factors such as plant species richness and aboveground bio‐mass exhibited weak but significant associations with bacterial richness and *** findings revealed the impor‐tant role of climate and salinity factors in controlling bacterial richness and diversity;understanding these roles is critical for predicting the impacts of climate change and promoting sustainable management strategies for ecosystem services in these sandy lands.