桂西北石漠化区不同植被恢复类型对土壤理化性质、酶活与真菌群落多样性的影响  

Effet of vegetation restoration models on soil physiochemical properties,enzymes activities and fungal diversity in rocky desertification area of northwest Guangxi,China

作　　者：高风 文仕知[1] 韦铄星[2] 欧汉彪 王智慧 GAO Feng;WEN Shizhi;WEI Shuoxing;OU Hanbiao;WANG Zhihui(College of Forestry,Central South University of Forestry and Technology,Changsha 410004,China;Key Laboratory of Central South Fast-Growing Timber Cultivation of National Forestry and Grassland Administration,Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Guangxi Forestry Research Institute,Nanning 530002,China)

机构地区：[1]中南林业科技大学林学院,湖南长沙410004 [2]广西壮族自治区林业科学研究院、国家林业和草原局中南速生材繁育实验室,广西优良用材林资源培育重点实验室,广西南宁530002

出　　处：《浙江农业学报》2023年第10期2425-2435,共11页Acta Agriculturae Zhejiangensis

基　　金：广西科技计划项目(桂科AB21220026);广西林业科技项目(桂林科研〔2022ZC〕第29号);广西自筹经费林业科技项目(桂林科研[2022ZC]第105号)。

摘　　要：以人为恢复了13年的落叶阔叶林(DF)、落叶常绿阔叶混交林(EDF)和常绿阔叶林(EF)为研究对象,以自然封育林(ENF)为对照,测定土壤理化性质、酶活性、土壤真菌群落丰度和多样性的变化,分析真菌群落与土壤因子的相关性。结果显示,相较于ENF,人为恢复的土壤全氮、速效磷含量,及土壤蔗糖酶活性显著(P<0.05)提高。人为恢复整体上提高了土壤真菌群落的相对丰度,以子囊菌门(Ascomycota)和担子菌门(Basidiomycota)为优势菌门。土壤中的真菌以腐生营养型和病理营养型为主,相较于ENF,DF提高了病理营养型真菌的相对丰度,EDF、EF提高了共生营养型真菌的相对丰度。总的来看,相较于ENF,人为恢复可以有效提高喀斯特退化区土壤的养分含量、酶活性和真菌群落相对丰度。In the present study,the differences of soil physiochemical properties,enzymes activities,fungal community diversity under vegetation restoration models in karst degraded areas were explored,as well as the correlation within soil physiochemical properties,enzymes activities,fungal community diversity,by taking the deciduous broad-leaved forest(DF),deciduous evergreen broad-leaved mixed forest(EDF)and evergreen broad-leaved forest(EF),which have been artificially restored for 13 years,as test treatments and the enclosure forest(ENF)as the control.It was shown that the contents of total nitrogen and available phosphorus,the activites of saccharase in the artificially restored forests were significantly(P<0.05)higher than those of ENF.The relative abundance of fungi was higher in artificially restored forest than that in ENF,in which the dominant fungi were Ascomycota and Basidiomycota.Functional prediction showed that soil fungi were mainly saprotroph and pathotroph.Compred with ENF,DF increased the relative abundance of pathotrophic fungi,EDF and EF increased the relative abundance of symbiotrophic fungi.In conclusion,compared with the enclosure forest,artificially restored forests could effectively improve soil nutrients contents,enzymes activities and relative abundance of fungal community in karst degraded areas.

关 键 词：植被恢复类型 真菌群落 喀斯特 酶活性 土壤养分 

分 类 号：S154.3[农业科学—土壤学] S714.6[农业科学—农业基础科学]