文献类型：期刊文献

英文题名：Biodiversity mitigates drought effects in the decomposer system across biomes

作者：Luan, Junwei[1,2] Li, Siyu[1,2] Liu, Shirong[3] Wang, Yi[2] Ding, Liping[2] Lu, Haibo[3,4,5] Chen, Lin[6] Zhang, Junhui[7] Zhou, Wenjun[8] Han, Shijie[7] Zhang, Yiping[8] Hattenschwiler, Stephan[9]

第一作者：Luan, Junwei

通信作者：Luan, JW[1];Luan, JW[2]

机构：[1]Int Ctr Bamboo & Rattan, Sanya Res Base, Sanya 572022, Peoples R China;[2]Int Ctr Bamboo & Rattan, Inst Resources & Environm, Key Lab Bamboo & Rattan Sci & Technol State Fores, Beijing 100102, Peoples R China;[3]Chinese Acad Forestry, Key Lab Forest Ecol & Environm Natl Forestry & Gr, Beijing 100091, Peoples R China;[4]Beijing Normal Univ, Fac Arts & Sci, Dept Geog, Zhuhai 519087, Peoples R China;[5]Beijing Normal Univ, Zhuhai Branch, State Key Lab Earth Surface Proc & Resource Ecol, Zhuhai 519087, Peoples R China;[6]Chinese Acad Forestry, Expt Ctr Trop Forestry, Pingxiang 532600, Peoples R China;[7]Qufu Normal Univ, Sch Life Sci, Qufu 273165, Peoples R China;[8]Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China;[9]Univ Montpellier, Ecole Prat Hautes Etud, Inst Rech Dev, Ctr Ecol Fonct & Evolut,CNRS, F-34293 Montpellier, France

年份：2024

卷号：121

期号：13

起止页码：e2313334121

外文期刊名：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

收录：;Scopus(收录号：2-s2.0-85188436466);WOS:【SCI-EXPANDED(收录号:WOS:001208065700005)】；

基金：We would like to thank Drs. DapaoYu, Guanhua Dai,Xinwei Guo, and Jinglei Zhang for their help in experiment implementation and field sampling. Thanks go to Professor Joann K. Whalen for her valuable comments on the early stage of the manuscript. This study was jointly funded by the National Key R&D Program of China (2021YFD2200403 and 2021YFD2200405) , Science and technology cooperation projects between governments of China and the European Union (2023YFE0105100) , the National Natural Science Foundation of China (Nos. 31930078, 31971461, 31670450, 32101500, and 42073080) , and the Fundamental Research Funds for ICBR (1632021023, 1632019006, and 1630032023002) .

语种：英文

外文关键词：biodiversity; climate change; ecosystem functioning; forest carbon cycling; litter decomposition

摘要：Multiple facets of global change affect the earth system interactively, with complex consequences for ecosystem functioning and stability. Simultaneous climate and biodiversity change are of particular concern, because biodiversity may contribute to ecosystem resistance and resilience and may mitigate climate change impacts. Yet, the extent and generality of how climate and biodiversity change interact remain insufficiently understood, especially for the decomposition of organic matter, a major determinant of the biosphere-atmosphere carbon feedbacks. With an inter - biome field experiment using large rainfall exclusion facilities, we tested how drought, a common prediction of climate change models for many parts of the world, and biodiversity in the decomposer system drive decomposition in forest ecosystems interactively. Decomposing leaf litter lost less carbon (C) and especially nitrogen (N) in five different forest biomes following partial rainfall exclusion compared to conditions without rainfall exclusion. An increasing complexity of the decomposer community alleviated drought effects, with full compensation when large- bodied invertebrates were present. Leaf litter mixing increased diversity effects, with increasing litter species richness, which contributed to counteracting drought effects on C and N loss, although to a much smaller degree than decomposer community complexity. Our results show at a relevant spatial scale covering distinct climate zones that both, the diversity of decomposer communities and plant litter in forest floors have a strong potential to mitigate drought effects on C and N dynamics during decomposition. Preserving biodiversity at multiple trophic levels contributes to ecosystem resistance and appears critical to maintain ecosystem processes under ongoing climate change.