摘要
森林细根分解是陆地生态系统养分循环的关键环节和重要过程,腐生真菌通过其特性广泛参与有机质分解、养分循环,连接植物与土壤2大碳库。环境和生物因素共同影响着腐生真菌生态功能的实现。文中综述了森林细根分解的腐生真菌功能特性、胞外酶特性、腐生真菌群落多样性变化、演替过程及影响因素,指出在后期研究中可利用高通量测序技术,深入开展腐生真菌胞外酶功能特性、营养策略、功能多样性组间协作研究,探索真菌主导的凋落物分解机制,并应用网络关系分析生境和底物异质性对腐生真菌群落结构和多样性、生态位划分、竞争或合作频率关系的影响,揭示细根分解的腐生真菌群落演替、聚集和驱动机制。
The decomposition of fine roots in forest is the key part and important process of nutrient cycling in the terrestrial ecosystem. Saprophytic fungi are major ecological actors in organic substance decomposition and nutrient cycling and in connecting two carbon pools of plants and soils. Environmental and biological factors are jointly affecting the realization of ecological functions of saprophytic fungi. This paper reviews the saprophytic fungal functional characteristics, extracellular enzyme characteristics, and the community diversity, succession processes and influencing factors of saprophytic fungi during decomposition of forest fine roots. It is pointed that researchers could use high-throughput sequencing technology to carry out the research on the collaboration between saprophytic fungi extracellular enzyme functional characteristics,nutrition strategies and functional diversity, explore litter decomposition mechanism by fungi, and apply the ecological network analysis method to analyze the impact of different habitats and substrates on the relationship among structure and diversity, ecological niche division and competition or cooperation frequency of saprophytic fungi community, in order to reveal the mechanism of saprophytic fungal community succession, aggregation and driving in the process of fine root decomposition.
作者
李德会
韩周林
吴庆贵
罗国容
梁明霞
陈娟
Li Dehui;Han Zhoulin;Wu Qinggui;Luo Guorong;Liang Mingxia;Chen Juan(School of Urban and Rural Planning and Construction,Mianyang Normal University,Mianyang 621000,Sichuan,China;Ecological Security and Protection Key Laboratory of Sichuan Province,Mianyang 621000,Sichuan,China)
出处
《世界林业研究》
CSCD
北大核心
2021年第3期25-31,共7页
World Forestry Research
基金
国家自然科学基金“不同改造模式下柏木人工林凋落物生产与腐解特征”(32071747)
四川省科技厅项目“雌雄沙棘与丛枝真菌共生对重金属污染的响应及联合修复效应”(2021YJ0293)
绵阳市科技局项目“基于城市绿化废弃物无害化处理的绿色营养基生产研究”(17YFHB001)
四川省教育厅应用基础与研究项目“柏木低效林改造引入树种细根分解真菌群落演替研究”(18ZB0305)
绵阳师范学院高层次人才科研启动项目“林窗位置对腐生真菌群落聚集的影响”(QD2020A17)。
关键词
细根分解
腐生真菌
群落多样性
群落演替
影响因素
fine root decomposition
saprophytic fungi
community diversity
community succession
influencing factor
