森林生态系统凋落物分解影响因素研究进展  

Research progress on influencing factors of litter decomposition in forest ecosystem

作　　者：张悦[1,2] 张艺凡 马怡波 刘嫦娥 段昌群[1,2] 字玉奋 唐彬程[1,2] 张维兰 ZHANG Yue;ZHANG Yi-fan;MA Yi-bo;LIU Chang-e;DUAN Chang-qun;ZI Yu-fen;TANG Bin-cheng;ZHANG Wei-lan(School of Ecology and Environmental Sciences&Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments,Yunnan University,Kunming 650091,China;International Cooperative Center of Plateau Lake Ecological Restoration and Watershed Management of Yunnan,Kunming 650091,China)

机构地区：[1]云南大学生态与环境学院暨云南省高原山地生态与退化环境修复重点实验室,云南昆明650091 [2]云南省高原湖泊生态修复及流域管理国际联合研究中心,云南昆明650091

出　　处：《环境生态学》2023年第4期45-56,共12页Environmental Ecology

基　　金：国家自然科学基金(32260315);云南省基础研究计划重点项目(202201BF070001-002、202201AS070016)资助

摘　　要：凋落物分解过程是森林生态系统物质循环和能量流动的关键环节,是有效养分回归土壤的重要方式之一,直接影响森林初级生产力水平、土壤地力维持能力甚至生态系统可持续发展。凋落物分解过程的影响因素复杂多样且具有不确定性,从凋落物分解的生态功能着手,重点阐述凋落物分解过程与分解速率的影响因素。通过近年来研究发现,凋落物分解的影响因素主要包括非生物作用与生物作两方面;分解阶段与区域尺度不同,影响因素的贡献度也存在差异;生物因子与非生物因子是并存且交互作用于凋落物分解过程。在全球气候变暖的大背景下,凋落物分解过程的影响因素及其响应机制成为研究热点且有待进一步深入。Litter decomposition is the key link of material cycle and energy flow in terrestrial ecosystem,and is one of the important ways for available nutrients to return to soil.It directly affects the level of forest primary productivity,the capacity of soil fertility maintenance and even the sustainable development of ecosystem.The influencing factors of litters decomposition process are complex and varied.This paper started from the ecological function of litters decomposition and focuses on the influencing factors of litters decomposition.Through a review of recent studies,it is found that the factors affecting litter decomposition mainly include environmental factors(abiotic action),litter properties and decomposers(biological action).The contribution degree of influencing factors varies with the decomposition stage and regional scale.Biological factors and abiotic factors coexist and interact with each other in the process of litter decomposition.Under the background of global warming,the influencing factors of litter decomposition and its response mechanism have become a hot topic and need to be further studied.

关 键 词：凋落物分解 环境因子 分解者 基质质量 全球变暖 

分 类 号：S718.55[农业科学—林学]