减雨对三江平原蒙古栎林土壤微生物群落的影响  

The Influence of Rain-reducing on the Soil Microbial Community of Quercus mongolica Forests in Sanjiang Plain

作　　者：崔嵘 董立本 池成林 韩大校 张国强 张吉利 刘宏亮[5] 马东明 王剑南 CUI Rong;DONG Liben;CHI Chenglin;HAN Daxiao;ZHANG Guoqiang;ZHANG Jili;LIU Hongliang;MA Dongming;WANG Jiannan(Harbin Research Institute of Forestry Machinery,National Forestry and Grassland Administration,Harbin 150086,Heilongjiang;Research Center of Cold Temperate Forestry,Chinese Academy of Forestry,Harbin 150086,Heilongjiang;Fuyuan Forest Ecosystem Positioning Observation and Research Station in Heilongjiang Province,Fuyuan 156500,Heilongjiang;College of Forestry,Northeast Forestry University,Harbin 150086,Heilongjiang;Fuyuan Forestry and Grassland Bureau,Fuyuan 156500,Heilongjiang)

机构地区：[1]国家林业和草原局哈尔滨林业机械研究所,黑龙江哈尔滨150086 [2]中国林业科学研究院寒温带林业研究中心,黑龙江哈尔滨150086 [3]黑龙江抚远森林生态系统定位观测研究站,黑龙江抚远156500 [4]东北林业大学林学院,哈尔滨150040 [5]抚远市林草局,黑龙江抚远156500

出　　处：《温带林业研究》2025年第2期9-16,43,共9页Journal of Temperate Forestry Research

基　　金：中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2021MA001)。

摘　　要：【目的】探究降水变化下蒙古栎林土壤微生物群落结构组成以及生物多样性变化情况。【方法】本研究以三江平原蒙古栎林为对象开展减雨试验,测定土壤微生物群落结构组成以及生物多样性等指标,分析减雨及断根处理对土壤微生物群落结构及多样性的影响。【结果】在减雨以及断根处理下,蒙古栎林土壤微生物的群落结构组成及其多样性均会受到明显影响。其中,降水减少会增加土壤真菌群落多样性指数,减少细菌群落多样性指数,并且土壤微生物群落的分布组成、种属数量、群落相对丰度以及分类聚集特性有明显改变。【结论】本研究结果在一定程度上揭示了降水变化对土壤微生物群落的影响情况,为后续研究降水变化对土壤微生物群落功能性影响及土壤微生物参与土壤碳氮循环的研究提供了数据参考。【Objective】To explore the variations in the composition of soil microbial community structure and biodiversity under precipitation changes in Quercus mongolica forests.【Method】This study carried out an experiment of rain-reducing and trench treatment in the Quercus mongolica forest in Sanjiang plain,determined the indicators such as the structural composition and biodiversity of soil microbial communities,and analyzed the influence of rain-reducing and trench treatment on the structure and diversity of soil microbial communities.【Result】Under the treatment of rain-reducing and supplemented with trench,both the community structure composition and diversity of soil microorganisms in the Quercus mongolica forest are significantly affected.The decrease in precipitation will increase the diversity index of soil fungal communities,reduce the diversity index of bacterial communities,and have obvious alterations on the distribution composition,species number,relative abundance of the community,and classification aggregation characteristics of soil microbial communities.The results of this research have,to a certain extent,disclosed the variations of soil microbial communities in relation to precipitation changes,offering a definite reference value for subsequent studies on the functional influence of precipitation changes on soil microbial communities and the involvement of soil microorganisms in the soil carbon and nitrogen cycles.【Conclusion】The results of this study partially elucidate the alterations in soil microbial communities in response to changes in precipitation,thereby offering valuable insights for future research on the functional impacts of precipitation variability on soil microbial communities and the roles of soil microorganisms in carbon and nitrogen cycling.

关 键 词：减雨 土壤微生物 断根 群落 多样性 

分 类 号：S154.3[农业科学—土壤学]