文献类型：期刊文献

英文题名：Soil properties and plant functional traits drive soil bacterial and fungal colonization in tropical karst and non-karst natural forests along the elevation gradient

作者：Wang, Genzhu[1,2] Zhao, Junguang[3] Liu, Yuguo[4] Pang, Danbo[5] Zhou, Ziyuan[6] Wang, Lina[1] Dong, Liang[1] Zhou, Jinxing[1]

第一作者：Wang, Genzhu

通信作者：Zhou, JX[1]

机构：[1]Beijing Forestry Univ, Jianshui Res Stn, Beijing 100083, Peoples R China;[2]China Inst Water Resources & Hydropower Res, Inst Sediment Res, Beijing 100038, Peoples R China;[3]Beijing Forestry Univ, Coll Sci, Beijing 100083, Peoples R China;[4]Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China;[5]Ningxia Univ, Breeding Base State Key Lab Land Degradat & Ecol R, Yinchuan 750021, Peoples R China;[6]Chinese Acad Forestry, Expt Ctr Forestry North China, Beijing 102399, Peoples R China

年份：2025

卷号：211

外文期刊名：APPLIED SOIL ECOLOGY

收录：;Scopus(收录号：2-s2.0-105002579997);WOS:【SCI-EXPANDED(收录号:WOS:001473971000001)】；

基金：Acknowledgements This study was supported by the National Key Research and Development Program of China (2022YFF1302900) and the National Natural Science Foundation of China (31870707) . We would like to thank all the reviewers who participated in the review and MJEditor ( www.mjeditor.com ) for its linguistic assistance during the preparation of this manuscript.

语种：英文

外文关键词：Soil microbial community; Plant biodiversity; Plant functional traits; Soil metal elements; Lithology type; Elevation

摘要：There are still many limitations in understanding the effects of the abiotic and biotic factors on soil bacterial and fungal communities in different lithological areas along the elevation gradient. In this study, plant biodiversity, functional traits, climatic factors, soil properties, and soil fungal and bacterial diversities and compositions were simultaneously measured in tropical karst and non-karst natural forests along elevation profiles in Southwestern China. Our results indicated plant taxonomic diversity, functional diversity, and phylogenic diversity were higher in karst areas than that in non-karst areas. Plant taxonomic diversity, functional diversity and phylogenic diversity increased with elevation increasing. The community-weighted mean leaf calcium and nitrogen concentrations in karst regions were significantly higher than that in non-karst regions. With the elevation increased, the plant functional traits changed from acquisitive traits to conservative traits. Soil bulk density in karst areas was lower than that in non-karst areas, while soil organic carbon was greater in karst areas as compared to nonkarst areas. Soil calcium concentrations in karst areas were significantly higher than those in non-karst areas. Both fungal and bacterial diversities increased with elevation, and were generally higher in karst areas than those in non-karst areas. Relative abundance of Proteobacteria and Acidobacteria in karst areas were lesser than in nonkarst areas, whereas the opposite pattern was observed for Actinobacteria. Boosted regression tree models indicated that the bacterial and fungal diversities and compositions were primarily affected by soil properties, followed by plant functional traits, biodiversity, and climatic factors. Structural equation models indicated that soil properties and functional traits directly impacted microbial distributions, whereas climatic factors and plant biodiversity only indirectly influenced these distributions through plant functional traits or soil properties. Our results highlighted soil calcium was a key regulator of bacterial and fungal distributions in karst and non-karst regions. The increased soil metal elements and plants with conservative functional traits generally increased bacterial and fungal diversities.