文献类型：期刊文献

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

作者：Li, Yin[1,2] Bruelheide, Helge[3,4] Scholten, Thomas[5] Schmid, Bernhard[6] Sun, Zhenkai[7] Zhang, Naili[1] Bu, Wensheng[8] Liu, Xiaojuan[1] Ma, Keping[1,2]

第一作者：Li, Yin

通信作者：Ma, KP[1]

机构：[1]Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Martin Luther Univ Halle Wittenberg, Inst Biol Geobot & Bot Garden, Kirchtor 1, D-06108 Halle, Germany;[4]German Ctr Integrat Biodivers Res iDiv, Deutsch Platt 5e, D-04103 Leipzig, Germany;[5]Eberhard Karls Univ Tubingen, Dept Geosci Soil Sci & Geomorphol, Rumelinstr 19-23, D-72070 Tubingen, Germany;[6]Univ Zurich, Dept Geog, Winterthurerstr 190, CH-8057 Zurich, Switzerland;[7]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China;[8]Jiangxi Agr Univ, Coll Forestry, Nanchang 330045, Jiangxi, Peoples R China

年份：2019

卷号：12

期号：5

起止页码：882-893

外文期刊名：JOURNAL OF PLANT ECOLOGY

收录：;Scopus(收录号：2-s2.0-85075398045);WOS:【SCI-EXPANDED(收录号:WOS:000491991000009)】；

基金：This work was financially supported by the National Natural Science Foundation of China (31270496 and 31300353) and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA 05050204). B.S. was supported by the University Research Priority Program Global Change and Biodiversity of the University of Zurich.

语种：英文

外文关键词：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) accumulation. Methods 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 accumulation. In 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 species. Least squares-based linear models and analysis of variance were used to investigate tree diversity effects. Structural 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 accumulation. Important 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, respectively. Converting SOC content to SOC stocks using measures of soil bulk density showed that tree species richness did enhance SOC accumulation in the different soil depths. These effects could only to some extent be explained by leaf-litter biomass and not by fine-root biomass. Our 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.