Plant–rodent interactions after a heavy snowfall decrease plant regeneration and soil carbon emission in an old-growth forest

作     者：Qingqiu Zhou Debao Li Shangwen Xia Zhe Chen Bo Wang Jianping Wu Qingqiu Zhou;Debao Li;Shangwen Xia;Zhe Chen;Bo Wang;Jianping Wu

作者机构：Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary EcologyYunnan UniversityKunming 650500China Key Laboratory of Soil Ecology and Health in Universities of Yunnan ProvinceSchool of Ecology and Environmental SciencesYunnan UniversityKunming 650500China Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303China School of Resources and Environmental EngineeringAnhui UniversityHefei 230601China 

出 版 物：《Forest Ecosystems》 (森林生态系统（英文版）)

年 卷 期：2021年第8卷第2期

页      面：403-412页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：funded by National Natural Science Foundation of China(Nos.31971497,31971444) by Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Yunnan University(No.C176210103) 

主　　题：Climate extreme PLFAs Soil respiration Forest ecosystem Enzyme activity 

摘      要：Background:Climate extremes are likely to become more common in the future and are expected to change ecosystem processes and *** important consumers of seeds in forests,rodents are likely to affect forest regeneration following an extreme weather *** April 2015,we began a field experiment after an extreme snowfall event in January 2015 in a primary forest that was300 years *** heavy snow broke many tree limbs,which presumably reduced the numbers of seeds *** treatments(rodent exclusion and rodent access)were established in the forest,in which rodent exclusion were achieved by placing stainlessness nets around the plot *** abundance,plant species richness,soil properties,soil microbial community composition,basal and substrate-induced respiration were determined in December ***:Plant abundance and species richness significantly increased,but soil microbial biomass decreased with rodent *** activity and soil basal respiration also significantly decreased with rodent *** other soil properties,however,were unaffected by rodent *** relative effects of multiple predictors of basal respiration were mainly explained by the composition of the soil microbial ***:After a heavy snowfall in an old-growth forest,exclusion of rodents increased plant regeneration and reduced microbial biomass and soil basal *** main factor associated with the reduction in soil basal respiration was the change in the composition of the soil microbial *** findings suggest that after a heavy snowfall,rodents may interfere with forest regeneration by directly reducing plant diversity and abundance but may enhance carbon retention by indirectly altering the soil microbial community.