Early positive effects of tree species richness on soil organic carbon accumulation in a large-scale forest biodiversity experiment

作     者：Yin Li Helge Bruelheide Thomas Scholten Bernhard Schmid Zhenkai Sun Naili Zhang Wensheng Bu Xiaojuan Liu Keping Ma 

作者机构：State Key Laboratory of Vegetation and Environmental ChangeInstitute of Botanythe Chinese Academy of SciencesBeijing 100093China University of Chinese Academy of SciencesBeijing 100049China Institute of Biology/Geobotany and Botanical GardenMartin Luther University Halle-WittenbergAm Kirchtor 106108 HalleGermany German Centre for Integrative Biodiversity Research(iDiv)Halle-Jena-LeipzigDeutscher Platz 5eD-04103 LeipzigGermany Department of GeosciencesSoil Science and GeomorphologyEberhard Karls University TübingenRümelinstrasse 19-2372070 TübingenGermany Department of GeographyUniversity of ZürichWinterthurerstrasse 190CH-8057 ZürichSwitzerland Research Institute of ForestryChinese Academy of ForestryBeijing 100091China College of ForestryJiangxi Agricultural UniversityNanchang 330045China 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2019年第12卷第5期

页      面：882-893页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(31270496 and 31300353) the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA 05050204) 

主　　题：BEF-china diversity fine-root biomass leaf-litter biomass soil carbon accumulation 

摘      要：Aims tree species richness has been reported to have positive effects on aboveground biomass and productivity,but little is known about its effects on soil organic carbon(SOC)*** to close this gap,we made use of a large biodiversity-ecosystem functioning experiment in subtropical china(BEF-china)and tested whether tree species richness enhanced SOC *** 2010 and 2015,vertically layered soil samples were taken to a depth of 30 cm from 57 plots ranging in tree species richness from one to eight *** squares-based linear models and analysis of variance were used to investigate tree diversity *** equation modeling was used to explore hypothesized indirect relationships between tree species richness,leaf-litter biomass,leaf-litter carbon content,fine-root biomass and SOC *** Findings Overall,SOC content decreased by 5.7 and 1.1 g C kg^(-1) in the top 0-5 and 5-10 cm soil depth,respectively,but increased by 1.0 and 1.5 g C kg^(-1) in the deeper 10-20 and 20-30 cm soil depth,*** SOC content to SOC stocks using measures of soil bulk density showed that tree species richness did enhance SOC accumulation in the different soil *** effects could only to some extent be explained by leaf-litter biomass and not by fine-root *** findings suggest that carbon storage in new forests in china could be increased by planting more diverse stands,with the potential to contribute to mitigation of climate warming.