Soil functional indicators in mixed beech forests are clearly species-specifi c  

作　　者：Yahya Kooch Neda Ghorbanzadeh Samaneh Hajimirzaaghaee Markus Egli 

机构地区：[1]Faculty of Natural Resources&Marine Sciences,Tarbiat Modares University,Noor 46417-76489,Mazandaran,Iran [2]Faculty of Natural Resources,University of Guilan,Sowmeh Sara 4432-3136,Guilan,Iran [3]Faculty of Natural Resources,University of Agricultural Sciences and Natural Resources,Sari,Iran [4]Department of Geography,University of Zürich,Zurich,Switzerland

出　　处：《Journal of Forestry Research》2023年第4期1033-1049,共17页林业研究（英文版）

基　　金：Tarbiat Modares University for the financial support of the study reported in this paper

摘　　要：Beech stands are considered part of the ancient forest ecosystems in the northern hemisphere.In mixed stands in beach forest ecosystems,the type of associated tree species can signifi cantly aff ect soil functions,but their infl uence on microbial activity,nutrient cycling and belowground properties is unknown.Here,we considered forest patches in northern Iran that are dominated by diff erent tree species:Fagus orientalis Lipsky,Quercus castaneifolia C.A.Mey.,Pterocarya fraxinifolia(Lam.),Tilia begonifolia Stev.,Zelkova carpinifolia Dippe,Acer cappadocicum Gled,Acer velutinum Boiss.,Fraxinus excelsior L.,Carpinus betulus L.,and Alnus subcordata C.A.Mey.For each forest patch–tree species,litter and soil samples(25×25×10 cm,100 of each)were analyzed for determine soil and litter properties and their relationship with tree species.The litter decomposition rate during a 1-year experiment was also determined.A PCA showed a clear diff erence between selected litter and soil characteristics among tree species.F.orientalis,Q.castaneifolia,P.fraxinifolia,T.begonifolia,Z.carpinifolia,A.cappadocicum,and A.velutinum enhanced soil microbial biomass of carbon,whereas patches with F.excelsior,C.betulus and A.subcordata had faster litter decomposition and enhanced biotic activities and C and N dynamics.Thus,soil function indicators were species-specifi c in the mixed beech forest.A.subcordata(a N-fi xing species),C.betulus and F.excelsior were main drivers of microbial activities related to nutrient cycling in the old-growth beech forest.

关 键 词：Old-growth forest Deciduous tree species Soil fertility Microbial activities Carbon and nitrogen cycle 

分 类 号：S714[农业科学—林学]